Pub Date : 2025-03-05DOI: 10.1103/physrevd.111.l061302
Yang Ma, Zihui Wang
We investigate the astrophysical consequences of an attractive long-range interaction between dark matter and baryonic matter. Our study highlights the role of this interaction in inducing dynamical friction between dark matter and stars, which can significantly influence the evolution of compact stellar systems. Using the star cluster in Eridanus II as a case study, we derive a new stringent upper bound on the interaction strength α˜≤314.5 for the interaction range λ=1pc. This constraint is independent of the dark matter mass and can improve the existing model-independent limits on α˜ by a few orders of magnitude. Furthermore, we observe that the constraint is insensitive to the mass of the stellar system and the dark matter density in the stellar system as long as the system is dark matter dominated. This new approach can be applied to many other stellar systems, and we obtain comparable constraints from compact stellar halos observed in ultrafaint dwarf galaxies. Published by the American Physical Society2025
{"title":"New probe of dark matter-baryon interactions in compact stellar systems","authors":"Yang Ma, Zihui Wang","doi":"10.1103/physrevd.111.l061302","DOIUrl":"https://doi.org/10.1103/physrevd.111.l061302","url":null,"abstract":"We investigate the astrophysical consequences of an attractive long-range interaction between dark matter and baryonic matter. Our study highlights the role of this interaction in inducing dynamical friction between dark matter and stars, which can significantly influence the evolution of compact stellar systems. Using the star cluster in Eridanus II as a case study, we derive a new stringent upper bound on the interaction strength α</a:mi></a:mrow>˜</a:mo></a:mrow></a:mover>≤</a:mo>314.5</a:mn></a:mrow></a:math> for the interaction range <e:math xmlns:e=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><e:mi>λ</e:mi><e:mo>=</e:mo><e:mn>1</e:mn><e:mtext> </e:mtext><e:mtext> </e:mtext><e:mi>pc</e:mi></e:math>. This constraint is independent of the dark matter mass and can improve the existing model-independent limits on <g:math xmlns:g=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><g:mover accent=\"true\"><g:mi>α</g:mi><g:mo stretchy=\"false\">˜</g:mo></g:mover></g:math> by a few orders of magnitude. Furthermore, we observe that the constraint is insensitive to the mass of the stellar system and the dark matter density in the stellar system as long as the system is dark matter dominated. This new approach can be applied to many other stellar systems, and we obtain comparable constraints from compact stellar halos observed in ultrafaint dwarf galaxies. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> </jats:permissions> </jats:supplementary-material>","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"34 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143569659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-05DOI: 10.1103/physrevd.111.l061301
Massimo Giovannini
According to the microscopic formulation of Landauer’s principle, when information is deleted, the von Neumann entropy of the system gets reduced with a corresponding energy cost. Although within the same perspective the growth of the entropy should remain unconstrained, we show that during quantum amplification the heat flow does restrict the increase of the von Neumann entropy. When applied to the case of relic gravitons (with frequencies between the aHz region and the THz domain), the bounds obtained here set a limit on initial thermal gravitons and on the total duration of inflation. Published by the American Physical Society2025
{"title":"Quantum amplification, relic gravitons, and Landauer’s conjecture","authors":"Massimo Giovannini","doi":"10.1103/physrevd.111.l061301","DOIUrl":"https://doi.org/10.1103/physrevd.111.l061301","url":null,"abstract":"According to the microscopic formulation of Landauer’s principle, when information is deleted, the von Neumann entropy of the system gets reduced with a corresponding energy cost. Although within the same perspective the growth of the entropy should remain unconstrained, we show that during quantum amplification the heat flow does restrict the increase of the von Neumann entropy. When applied to the case of relic gravitons (with frequencies between the aHz region and the THz domain), the bounds obtained here set a limit on initial thermal gravitons and on the total duration of inflation. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> </jats:permissions> </jats:supplementary-material>","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"17 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143569656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-05DOI: 10.1103/physrevd.111.055003
René Oswald, Victor Vogt, Stephan Schiller
Ultralight dark matter (UDM) may manifest itself through oscillating fundamental constants of normal matter. These can be experimentally searched for by implementing two dissimilar oscillators producing a beat between their frequencies and analyzing the beat-frequency time series for the presence of any temporal oscillations. Typically, the time series of such a detector contains contributions from nonstationary noise. In order to reduce the influence of such noise we propose and demonstrate paired detectors: two nominally identical detectors whose signals are synchronously recorded. The cross-spectrum of the two individual beat time series is then analyzed for UDM signatures. This approach permits us to suppress spurious signals appearing in uncorrelated fashion in either detector. We furthermore demonstrate detectors that are based on a vibrational molecular transition, which are advantageous due to their larger sensitivity to oscillations of the nuclear masses. The analysis of 274 hours of data yielded improved bounds for the coupling constants of UDM to nuclear mass and to electron mass in the frequency ranges 10–500 Hz and 10–122 kHz, with improvement factors between 6 and 10. These bounds are currently the strongest. Similar bounds are obtained for the fine-structure constant. The present approach may be generalized to large ensembles of detectors. Published by the American Physical Society2025
{"title":"Search for oscillating fundamental constants using a paired detector and vibrational spectroscopy","authors":"René Oswald, Victor Vogt, Stephan Schiller","doi":"10.1103/physrevd.111.055003","DOIUrl":"https://doi.org/10.1103/physrevd.111.055003","url":null,"abstract":"Ultralight dark matter (UDM) may manifest itself through oscillating fundamental constants of normal matter. These can be experimentally searched for by implementing two dissimilar oscillators producing a beat between their frequencies and analyzing the beat-frequency time series for the presence of any temporal oscillations. Typically, the time series of such a detector contains contributions from nonstationary noise. In order to reduce the influence of such noise we propose and demonstrate paired detectors: two nominally identical detectors whose signals are synchronously recorded. The cross-spectrum of the two individual beat time series is then analyzed for UDM signatures. This approach permits us to suppress spurious signals appearing in uncorrelated fashion in either detector. We furthermore demonstrate detectors that are based on a vibrational molecular transition, which are advantageous due to their larger sensitivity to oscillations of the nuclear masses. The analysis of 274 hours of data yielded improved bounds for the coupling constants of UDM to nuclear mass and to electron mass in the frequency ranges 10–500 Hz and 10–122 kHz, with improvement factors between 6 and 10. These bounds are currently the strongest. Similar bounds are obtained for the fine-structure constant. The present approach may be generalized to large ensembles of detectors. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> </jats:permissions> </jats:supplementary-material>","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"127 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143569653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-04DOI: 10.1103/physrevd.111.066005
Weicheng Zhao, Pu-Jian Mao, Jun-Bao Wu
In this paper, we present a second realization of the Weyl double copy (WDC) in four-dimensional algebraic type D spacetime. We show that any type D vacuum solution admits an algebraically general Maxwell scalar on the curved background that squares to give the Weyl scalar. The WDC relation defines a scalar field that satisfies the Klein-Gordon equation sourced by the Weyl scalar on the curved background. We then extend the type D WDC to five dimensions. Published by the American Physical Society2025
{"title":"Weyl double copy in type D spacetime in four and five dimensions","authors":"Weicheng Zhao, Pu-Jian Mao, Jun-Bao Wu","doi":"10.1103/physrevd.111.066005","DOIUrl":"https://doi.org/10.1103/physrevd.111.066005","url":null,"abstract":"In this paper, we present a second realization of the Weyl double copy (WDC) in four-dimensional algebraic type D spacetime. We show that any type D vacuum solution admits an algebraically general Maxwell scalar on the curved background that squares to give the Weyl scalar. The WDC relation defines a scalar field that satisfies the Klein-Gordon equation sourced by the Weyl scalar on the curved background. We then extend the type D WDC to five dimensions. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> </jats:permissions> </jats:supplementary-material>","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"30 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143546365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-04DOI: 10.1103/physrevd.111.065008
Fabio van Dissel, George Zahariade
The backreaction of quantum degrees of freedom on classical backgrounds is a poorly understood topic in theoretical physics. Most often it is treated within the semiclassical approximation with the help of various prescriptions accounting for the effect of quantum excitations on the dynamics of the background. We focus on two popular ones: (i) the mean-field approximation whereby quantum degrees of freedom couple to the classical background via their quantum expectation values; (ii) the (stochastic) method whereby the fully coupled system is evolved using classical equations of motion for various randomly sampled initial conditions of the quantum degree of freedom, and a statistical average is performed . We evaluate the performance of each method in a simple toy model against a fully quantum mechanical treatment, and identify its regime of validity. We interpret the results in terms of quantum entanglement and loss of classicality of the background. Published by the American Physical Society2025
{"title":"Semiclassical backreaction: A qualitative assessment","authors":"Fabio van Dissel, George Zahariade","doi":"10.1103/physrevd.111.065008","DOIUrl":"https://doi.org/10.1103/physrevd.111.065008","url":null,"abstract":"The backreaction of quantum degrees of freedom on classical backgrounds is a poorly understood topic in theoretical physics. Most often it is treated within the semiclassical approximation with the help of various prescriptions accounting for the effect of quantum excitations on the dynamics of the background. We focus on two popular ones: (i) the mean-field approximation whereby quantum degrees of freedom couple to the classical background via their quantum expectation values; (ii) the (stochastic) method whereby the fully coupled system is evolved using classical equations of motion for various randomly sampled initial conditions of the quantum degree of freedom, and a statistical average is performed . We evaluate the performance of each method in a simple toy model against a fully quantum mechanical treatment, and identify its regime of validity. We interpret the results in terms of quantum entanglement and loss of classicality of the background. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> </jats:permissions> </jats:supplementary-material>","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"127 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143546504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-04DOI: 10.1103/physrevd.111.054002
Pablo Martín-Higueras, David R. Entem, Pablo G. Ortega, Jorge Segovia, Francisco Fernández
Dibaryons are the simplest system in which the baryon-baryon interaction, and hence the underlying quark-quark interaction, can be studied in a clear way. Although the only dibaryon known today is the deuteron (and possibly the d*), fully heavy dibaryons are good candidates for bound states because in such systems the kinetic energy is small and the high symmetry of the wave function favors binding. In this study, the possible existence of ΩcccΩccc and ΩbbbΩbbb dibaryons is investigated in the framework of a constituent quark model that satisfactorily describes the deuteron, the d*(2380) and the NN interaction. JP=0+ candidates are found in both systems with binding energies of the order of MeV. A Ω-dibaryon candidate is also found. Published by the American Physical Society2025
{"title":"Study of the ΩcccΩccc and ΩbbbΩbbb dibaryons in a constituent quark model","authors":"Pablo Martín-Higueras, David R. Entem, Pablo G. Ortega, Jorge Segovia, Francisco Fernández","doi":"10.1103/physrevd.111.054002","DOIUrl":"https://doi.org/10.1103/physrevd.111.054002","url":null,"abstract":"Dibaryons are the simplest system in which the baryon-baryon interaction, and hence the underlying quark-quark interaction, can be studied in a clear way. Although the only dibaryon known today is the deuteron (and possibly the d</a:mi>*</a:mo></a:msup></a:math>), fully heavy dibaryons are good candidates for bound states because in such systems the kinetic energy is small and the high symmetry of the wave function favors binding. In this study, the possible existence of <c:math xmlns:c=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><c:msub><c:mi mathvariant=\"normal\">Ω</c:mi><c:mrow><c:mi>c</c:mi><c:mi>c</c:mi><c:mi>c</c:mi></c:mrow></c:msub><c:msub><c:mi mathvariant=\"normal\">Ω</c:mi><c:mrow><c:mi>c</c:mi><c:mi>c</c:mi><c:mi>c</c:mi></c:mrow></c:msub></c:math> and <g:math xmlns:g=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><g:msub><g:mi mathvariant=\"normal\">Ω</g:mi><g:mrow><g:mi>b</g:mi><g:mi>b</g:mi><g:mi>b</g:mi></g:mrow></g:msub><g:msub><g:mi mathvariant=\"normal\">Ω</g:mi><g:mrow><g:mi>b</g:mi><g:mi>b</g:mi><g:mi>b</g:mi></g:mrow></g:msub></g:math> dibaryons is investigated in the framework of a constituent quark model that satisfactorily describes the deuteron, the <k:math xmlns:k=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><k:msup><k:mi>d</k:mi><k:mo>*</k:mo></k:msup><k:mo stretchy=\"false\">(</k:mo><k:mn>2380</k:mn><k:mo stretchy=\"false\">)</k:mo></k:math> and the <o:math xmlns:o=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><o:mi>N</o:mi><o:mi>N</o:mi></o:math> interaction. <q:math xmlns:q=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><q:msup><q:mi>J</q:mi><q:mi>P</q:mi></q:msup><q:mo>=</q:mo><q:msup><q:mn>0</q:mn><q:mo>+</q:mo></q:msup></q:math> candidates are found in both systems with binding energies of the order of MeV. A <s:math xmlns:s=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><s:mi mathvariant=\"normal\">Ω</s:mi></s:math>-dibaryon candidate is also found. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> </jats:permissions> </jats:supplementary-material>","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"38 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143546508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-04DOI: 10.1103/physrevd.111.055001
Kai Ma, Tong Li
The laser of an intense electromagnetic field provides an important tool to study the strong-field particle physics. The nonlinear Compton scattering was observed in the collision of an ultrarelativistic electron beam with a laser pulse in the 1990s. The precision measurement of the nonlinear Compton scattering shines the light on the studies of strong-field quantum electrodynamics (QED) and nonlinear effects in QED. In this work, we propose to produce new massive particles through the nonlinear Compton scattering in the presence of a high intense laser field. We take dark photon or axionlike particle as illustrative new particle. Compared with other collider and beam dump experiments, the laser induced process provides a complementary and competitive search of new invisible particles lighter than 1 MeV. Published by the American Physical Society2025
{"title":"Laser induced Compton scattering to dark photon or axionlike particle","authors":"Kai Ma, Tong Li","doi":"10.1103/physrevd.111.055001","DOIUrl":"https://doi.org/10.1103/physrevd.111.055001","url":null,"abstract":"The laser of an intense electromagnetic field provides an important tool to study the strong-field particle physics. The nonlinear Compton scattering was observed in the collision of an ultrarelativistic electron beam with a laser pulse in the 1990s. The precision measurement of the nonlinear Compton scattering shines the light on the studies of strong-field quantum electrodynamics (QED) and nonlinear effects in QED. In this work, we propose to produce new massive particles through the nonlinear Compton scattering in the presence of a high intense laser field. We take dark photon or axionlike particle as illustrative new particle. Compared with other collider and beam dump experiments, the laser induced process provides a complementary and competitive search of new invisible particles lighter than 1 MeV. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> </jats:permissions> </jats:supplementary-material>","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"37 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143546510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-04DOI: 10.1103/physrevd.111.064015
Jose Luis Blázquez-Salcedo, Fech Scen Khoo, Burkhard Kleihaus, Jutta Kunz
Quasinormal modes are excited during the ringdown phase of black holes after merger. Determination of quasinormal modes of rapidly rotating black holes in alternative theories of gravity has remained a challenge for a long time. Here we discuss in detail our recently developed method to extract the quasinormal modes for rapidly rotating black holes in Einstein-Gauss-Bonnet-dilaton theory. We first obtain numerically the exact rapidly rotating background solutions, which also clarify their domain of existence. Then we solve the equations for the linear perturbations of the metric and the dilaton field by employing an appropriate set of boundary conditions and a spectral decomposition of the perturbation functions. The resulting spectrum agrees well with the known limits obtained for slow rotation and weak coupling, while it exhibits larger deviations for stronger coupling. Published by the American Physical Society2025
{"title":"Quasinormal mode spectrum of rotating black holes in Einstein-Gauss-Bonnet-dilaton theory","authors":"Jose Luis Blázquez-Salcedo, Fech Scen Khoo, Burkhard Kleihaus, Jutta Kunz","doi":"10.1103/physrevd.111.064015","DOIUrl":"https://doi.org/10.1103/physrevd.111.064015","url":null,"abstract":"Quasinormal modes are excited during the ringdown phase of black holes after merger. Determination of quasinormal modes of rapidly rotating black holes in alternative theories of gravity has remained a challenge for a long time. Here we discuss in detail our recently developed method to extract the quasinormal modes for rapidly rotating black holes in Einstein-Gauss-Bonnet-dilaton theory. We first obtain numerically the exact rapidly rotating background solutions, which also clarify their domain of existence. Then we solve the equations for the linear perturbations of the metric and the dilaton field by employing an appropriate set of boundary conditions and a spectral decomposition of the perturbation functions. The resulting spectrum agrees well with the known limits obtained for slow rotation and weak coupling, while it exhibits larger deviations for stronger coupling. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> </jats:permissions> </jats:supplementary-material>","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"35 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143546511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-04DOI: 10.1103/physrevd.111.066004
Lucas Martin, Martin Parlanti, Martin Schvellinger
We study high-energy scattering at fixed angle in the planar limit of non-Abelian gauge field theories from type IIB superstring theory scattering amplitudes. First, we consider four-glueball scattering described in terms of the four-dilaton string theory scattering amplitude. We explicitly calculate some angular integrals of four scalar spherical harmonics on the five sphere leading to selection rules for several scattering processes. Then, we consider the high-energy limit of the four-dilatino scattering amplitude in type IIB superstring theory, which allows to describe four spin-1/2 fermions scattering in the dual gauge field theory. In both cases, the partonic structure of the scattering cross sections is obtained. The Regge behavior is also obtained. In addition, we study certain related aspects by considering the effective action constructed from IIB supergravity. Published by the American Physical Society2025
{"title":"Fermions hard scattering from superstrings","authors":"Lucas Martin, Martin Parlanti, Martin Schvellinger","doi":"10.1103/physrevd.111.066004","DOIUrl":"https://doi.org/10.1103/physrevd.111.066004","url":null,"abstract":"We study high-energy scattering at fixed angle in the planar limit of non-Abelian gauge field theories from type IIB superstring theory scattering amplitudes. First, we consider four-glueball scattering described in terms of the four-dilaton string theory scattering amplitude. We explicitly calculate some angular integrals of four scalar spherical harmonics on the five sphere leading to selection rules for several scattering processes. Then, we consider the high-energy limit of the four-dilatino scattering amplitude in type IIB superstring theory, which allows to describe four spin-1</a:mn>/</a:mo>2</a:mn></a:mrow></a:math> fermions scattering in the dual gauge field theory. In both cases, the partonic structure of the scattering cross sections is obtained. The Regge behavior is also obtained. In addition, we study certain related aspects by considering the effective action constructed from IIB supergravity. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> </jats:permissions> </jats:supplementary-material>","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"16 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143546509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-03DOI: 10.1103/physrevd.111.065003
Feiyu Peng, Hongfei Shu
We study the zero-dimensional prototype of the path integrals in quantum mechanics and quantum field theory, with the action S(ϕ)=σ2ϕ2+λ4ϕ4. Using the Lefschetz thimble decomposition and the saddle point expansion, we derive multiple asymptotic formal series of the correlation function associated with the perturbative and nonperturbative saddle points. Furthermore, we reconstruct the exact correlation function employing the Borel resummation. We then consider how to truncate the Dyson-Schwinger equations to compute two-point functions beginning with the perturbation expansion of the correlation functions, analogous to the one obtained from the Feynman diagram in higher dimensions. For the case σ<0, we find that, although the asymptotic series around the perturbative saddle point is Borel summable, it does not capture the full information. Consequently, contributions from nonperturbative saddle points must be included to ensure a complete truncation procedure. Published by the American Physical Society2025
{"title":"Truncating Dyson-Schwinger equations based on a Lefschetz thimble decomposition and Borel resummation","authors":"Feiyu Peng, Hongfei Shu","doi":"10.1103/physrevd.111.065003","DOIUrl":"https://doi.org/10.1103/physrevd.111.065003","url":null,"abstract":"We study the zero-dimensional prototype of the path integrals in quantum mechanics and quantum field theory, with the action S</a:mi>(</a:mo>ϕ</a:mi>)</a:mo>=</a:mo>σ</a:mi>2</a:mn></a:mfrac>ϕ</a:mi>2</a:mn></a:msup>+</a:mo>λ</a:mi>4</a:mn></a:mfrac>ϕ</a:mi>4</a:mn></a:msup></a:math>. Using the Lefschetz thimble decomposition and the saddle point expansion, we derive multiple asymptotic formal series of the correlation function associated with the perturbative and nonperturbative saddle points. Furthermore, we reconstruct the exact correlation function employing the Borel resummation. We then consider how to truncate the Dyson-Schwinger equations to compute two-point functions beginning with the perturbation expansion of the correlation functions, analogous to the one obtained from the Feynman diagram in higher dimensions. For the case <e:math xmlns:e=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><e:mi>σ</e:mi><e:mo><</e:mo><e:mn>0</e:mn></e:math>, we find that, although the asymptotic series around the perturbative saddle point is Borel summable, it does not capture the full information. Consequently, contributions from nonperturbative saddle points must be included to ensure a complete truncation procedure. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> </jats:permissions> </jats:supplementary-material>","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"38 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143538422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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