Neutron skin is an exotic phenomena in unstable nuclei. The various effects in nuclear reactions caused by the neutron skin and also its relation with the properties of nuclear structure are reviewed in this article. Based on numerous studies with theoretical models, strong correlations have been found between the neutron skin thickness and neutron removal cross section, neutron/proton yield ratio, t/ch{^3He} yield ratio, neutron-proton momentum difference, isoscaling parameter, photon production, reaction cross sections for neutron induced reactions, charge-changing cross sections difference of mirror nuclei, astrophysical $S$-factor, and other quantities in nuclear reactions induced by neutron-rich nuclei. Moreover, the relationships between neutron skin thickness and some properties of nuclear structure, such as $alpha$-cluster formation, $alpha$ decay, nuclear surface, nuclear temperature, and proton radii difference of mirror nuclei, have also been investigated. It also has been shown that the neutron skin plays a crucial role in relativistic heavy-ion collisions. Experimentally, an unstable nucleus with neutron skin can be generated by radioactive nuclear beam facilities, and the thickness of neutron skin could be extracted by measuring the sensitive probes, which further helps giving stringent constraints on the equation of state of asymmetric nuclear matter and properties of neutron stars.
{"title":"Neutron skin and its effects in heavy-ion collisions","authors":"Meng-Qi Ding, De-Qing Fang, Yu-Gang Ma","doi":"arxiv-2409.07059","DOIUrl":"https://doi.org/arxiv-2409.07059","url":null,"abstract":"Neutron skin is an exotic phenomena in unstable nuclei. The various effects\u0000in nuclear reactions caused by the neutron skin and also its relation with the\u0000properties of nuclear structure are reviewed in this article. Based on numerous\u0000studies with theoretical models, strong correlations have been found between\u0000the neutron skin thickness and neutron removal cross section, neutron/proton\u0000yield ratio, t/ch{^3He} yield ratio, neutron-proton momentum difference,\u0000isoscaling parameter, photon production, reaction cross sections for neutron\u0000induced reactions, charge-changing cross sections difference of mirror nuclei,\u0000astrophysical $S$-factor, and other quantities in nuclear reactions induced by\u0000neutron-rich nuclei. Moreover, the relationships between neutron skin thickness\u0000and some properties of nuclear structure, such as $alpha$-cluster formation,\u0000$alpha$ decay, nuclear surface, nuclear temperature, and proton radii\u0000difference of mirror nuclei, have also been investigated. It also has been\u0000shown that the neutron skin plays a crucial role in relativistic heavy-ion\u0000collisions. Experimentally, an unstable nucleus with neutron skin can be\u0000generated by radioactive nuclear beam facilities, and the thickness of neutron\u0000skin could be extracted by measuring the sensitive probes, which further helps\u0000giving stringent constraints on the equation of state of asymmetric nuclear\u0000matter and properties of neutron stars.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"203 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We formulate spin magnetohydrodynamics (MHD) by including the magnetic-flux and total angular momentum conservation laws in the hydrodynamic framework. To specify the local angular momentum conservation, we choose the totally antisymmetric spin current. The entropy-current analysis allows for ten dissipative first-order transport coefficients including anisotropic spin relaxation rates and the conversion rate between a vorticity (shear) to a symmetric stress (antisymmetric torque). By employing the linear-mode analysis, we solve the first-order spin MHD equations to determine the dispersion relations with the complete information of anisotropy retained. Our analytic solutions indicate that the small-momentum expansion is spoiled by blow up of the higher-order terms when the angle between the momentum and the magnetic field approaches the right angle. This also reveals the existence of another expansion parameter, and, in light of it, we provide solutions in an alternative series expression beyond the critical angle. We confirm that these two series expansions work well in the appropriate angle ranges as compared with numerical results.
{"title":"Anisotropic linear waves and breakdown of the momentum expansion in spin magnetohydrodynamics","authors":"Zhe Fang, Koichi Hattori, Jin Hu","doi":"arxiv-2409.07096","DOIUrl":"https://doi.org/arxiv-2409.07096","url":null,"abstract":"We formulate spin magnetohydrodynamics (MHD) by including the magnetic-flux\u0000and total angular momentum conservation laws in the hydrodynamic framework. To\u0000specify the local angular momentum conservation, we choose the totally\u0000antisymmetric spin current. The entropy-current analysis allows for ten\u0000dissipative first-order transport coefficients including anisotropic spin\u0000relaxation rates and the conversion rate between a vorticity (shear) to a\u0000symmetric stress (antisymmetric torque). By employing the linear-mode analysis,\u0000we solve the first-order spin MHD equations to determine the dispersion\u0000relations with the complete information of anisotropy retained. Our analytic\u0000solutions indicate that the small-momentum expansion is spoiled by blow up of\u0000the higher-order terms when the angle between the momentum and the magnetic\u0000field approaches the right angle. This also reveals the existence of another\u0000expansion parameter, and, in light of it, we provide solutions in an\u0000alternative series expression beyond the critical angle. We confirm that these\u0000two series expansions work well in the appropriate angle ranges as compared\u0000with numerical results.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The compact object with a mass of $2.50-2.67~M_odot$ observed by LIGO Scientific and Virgo collaborations in GW190814, as well as the recent report of a light compact object with a mass and radius of $M=0.77^{+0.20}_{-0.17}M_{odot}$ and $R=10.4^{+0.86}_{-0.78}$ km within the supernova remnant HESS J1731-347, have posed a great challenge to the investigations into the supranuclear matter. In the inner core region of the neutron star, the strangeness degrees of freedom, such as the hyperons, can be present, which is also named as a hyperonic star. In this work, the neutron star consisting of nucleons and leptons, and the hyperonic star including the hyperons will be studied in the framework of the density-dependent relativistic mean-field (DDRMF) model. Some popular DDRMF parameterizations will be adopted to investigate the properties of nuclear matter and the mass, radius, tidal deformability, and other properties of neutron star and hyperonic stars. We find that the maximum masses of neutron star calculated by DD-MEX, DD-MEX1, DD-MEX2, DD-MEXY and DD-LZ1 sets can be around $2.5-2.6~M_odot$ with quite stiff equations of state (EOSs) generated by their strong repulsive contributions from vector potentials at high densities. Moreover, by investigating the influence of the crust EOS and core EOS on the neutron stars, we find that the observational data from HESS J1731-347 suggest the requirement of a crust EOS with a higher $L$ parameter and a core EOS with a lower $L$ parameter, and the $M-R$ relations from the constructed EOSs can also be consistent with the observables of PSR J0740+6620, PSR J0030+0451 from NICER and the GW170817 event. With the inclusion of hyperons, the hyperonic star matter becomes softer compared to the neutron star matter. But the massive hyperonic star can also be obtained with DDRMF parameter sets if the vector coupling constants are strong.
{"title":"Investigations on the equation of state of neutron star matter with density-dependent relativistic mean-field model","authors":"Kaixuan Huang, Jinniu Hu","doi":"arxiv-2409.07038","DOIUrl":"https://doi.org/arxiv-2409.07038","url":null,"abstract":"The compact object with a mass of $2.50-2.67~M_odot$ observed by LIGO\u0000Scientific and Virgo collaborations in GW190814, as well as the recent report\u0000of a light compact object with a mass and radius of\u0000$M=0.77^{+0.20}_{-0.17}M_{odot}$ and $R=10.4^{+0.86}_{-0.78}$ km within the\u0000supernova remnant HESS J1731-347, have posed a great challenge to the\u0000investigations into the supranuclear matter. In the inner core region of the\u0000neutron star, the strangeness degrees of freedom, such as the hyperons, can be\u0000present, which is also named as a hyperonic star. In this work, the neutron\u0000star consisting of nucleons and leptons, and the hyperonic star including the\u0000hyperons will be studied in the framework of the density-dependent relativistic\u0000mean-field (DDRMF) model. Some popular DDRMF parameterizations will be adopted\u0000to investigate the properties of nuclear matter and the mass, radius, tidal\u0000deformability, and other properties of neutron star and hyperonic stars. We\u0000find that the maximum masses of neutron star calculated by DD-MEX, DD-MEX1,\u0000DD-MEX2, DD-MEXY and DD-LZ1 sets can be around $2.5-2.6~M_odot$ with quite\u0000stiff equations of state (EOSs) generated by their strong repulsive\u0000contributions from vector potentials at high densities. Moreover, by\u0000investigating the influence of the crust EOS and core EOS on the neutron stars,\u0000we find that the observational data from HESS J1731-347 suggest the requirement\u0000of a crust EOS with a higher $L$ parameter and a core EOS with a lower $L$\u0000parameter, and the $M-R$ relations from the constructed EOSs can also be\u0000consistent with the observables of PSR J0740+6620, PSR J0030+0451 from NICER\u0000and the GW170817 event. With the inclusion of hyperons, the hyperonic star\u0000matter becomes softer compared to the neutron star matter. But the massive\u0000hyperonic star can also be obtained with DDRMF parameter sets if the vector\u0000coupling constants are strong.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"74 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Motivated by the ongoing analysis of the BESIII Collaboration on the single-tagged $e^+e^-to e^+e^- eta pi^+pi^-$ reaction, we present a phenomenological study of the diphoton fusion to $eta pi^+ pi^-$, focusing on the production mechanism of the $f_1(1285)$ resonance. Contributions from the $f_1(1285)to a_0(980)^pm, pi^mp$ and $f_1(1285)to sigma/f_0(500), eta$ channels are included without introducing free parameters within an effective Lagrangian approach. Assuming the destructive interference between the amplitudes, we predict the invariant mass distributions, angular distributions, and total cross sections of the $gamma^*gamma to etapi^+pi^-$ process, which will be tested by the forthcoming BESIII measurements.
{"title":"Phenomenological model for the $γ^*γto ηπ^+ π^-$ reaction in the $f_1(1285)$ energy region","authors":"Xiu-Lei Ren, Igor Danilkin, Marc Vanderhaeghen","doi":"arxiv-2409.07235","DOIUrl":"https://doi.org/arxiv-2409.07235","url":null,"abstract":"Motivated by the ongoing analysis of the BESIII Collaboration on the\u0000single-tagged $e^+e^-to e^+e^- eta pi^+pi^-$ reaction, we present a\u0000phenomenological study of the diphoton fusion to $eta pi^+ pi^-$, focusing\u0000on the production mechanism of the $f_1(1285)$ resonance. Contributions from\u0000the $f_1(1285)to a_0(980)^pm, pi^mp$ and $f_1(1285)to sigma/f_0(500),\u0000eta$ channels are included without introducing free parameters within an\u0000effective Lagrangian approach. Assuming the destructive interference between\u0000the amplitudes, we predict the invariant mass distributions, angular\u0000distributions, and total cross sections of the $gamma^*gamma to\u0000etapi^+pi^-$ process, which will be tested by the forthcoming BESIII\u0000measurements.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"58 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This note serves as a companion to a Letter, where we introduce a new energy correlator-based observable designed to minimize the impact of selection bias due to energy loss in inclusive jets in heavy-ion collisions. Here, we apply the method outlined in the Letter to the first-ever measurement of energy correlators in heavy-ion collisions, recently released by the CMS Collaboration.
{"title":"Minimizing Selection Bias in Inclusive Jets in Heavy-Ion Collisions with Energy Correlators -- arXiv note","authors":"Carlota Andres, Jack Holguin","doi":"arxiv-2409.07526","DOIUrl":"https://doi.org/arxiv-2409.07526","url":null,"abstract":"This note serves as a companion to a Letter, where we introduce a new energy\u0000correlator-based observable designed to minimize the impact of selection bias\u0000due to energy loss in inclusive jets in heavy-ion collisions. Here, we apply\u0000the method outlined in the Letter to the first-ever measurement of energy\u0000correlators in heavy-ion collisions, recently released by the CMS\u0000Collaboration.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Carlota Andres, Jack Holguin, Raghav Kunnawalkam Elayavalli, Jussi Viinikainen
The first-ever measurement of energy correlators within inclusive jets produced in heavy-ion collisions, revealed by the CMS Collaboration, shows a clear enhancement at large angles relative to the proton-proton (p-p) baseline. However, interpreting this enhancement is complicated due to selection bias from energy loss, which also distorts the energy correlator heavy-ion to p-p ratio in the hadronization region, hindering our understanding of parton/hadron dynamics in a colored medium. In this Letter, we introduce a new ratio of energy correlator observables that removes the leading effects of selection bias from the two-point energy correlator spectrum (E2C). Pythia and Herwig simulations show that the impact of selection bias in the E2C is reduced by an order of magnitude, while sensitivity to any other medium modifications is retained. This quantity can be obtained directly from the experimental measurements presented by CMS, as illustrated in the accompanying note.
{"title":"Minimizing Selection Bias in Inclusive Jets in Heavy-Ion Collisions with Energy Correlators","authors":"Carlota Andres, Jack Holguin, Raghav Kunnawalkam Elayavalli, Jussi Viinikainen","doi":"arxiv-2409.07514","DOIUrl":"https://doi.org/arxiv-2409.07514","url":null,"abstract":"The first-ever measurement of energy correlators within inclusive jets\u0000produced in heavy-ion collisions, revealed by the CMS Collaboration, shows a\u0000clear enhancement at large angles relative to the proton-proton (p-p) baseline.\u0000However, interpreting this enhancement is complicated due to selection bias\u0000from energy loss, which also distorts the energy correlator heavy-ion to p-p\u0000ratio in the hadronization region, hindering our understanding of parton/hadron\u0000dynamics in a colored medium. In this Letter, we introduce a new ratio of\u0000energy correlator observables that removes the leading effects of selection\u0000bias from the two-point energy correlator spectrum (E2C). Pythia and Herwig\u0000simulations show that the impact of selection bias in the E2C is reduced by an\u0000order of magnitude, while sensitivity to any other medium modifications is\u0000retained. This quantity can be obtained directly from the experimental\u0000measurements presented by CMS, as illustrated in the accompanying note.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We describe a new algorithm to calculate the vibrational nuclear level density of an atomic nucleus. Fictitious perturbation operators that probe the response of the system are generated by drawing their matrix elements from some probability distribution function. We use the Finite Amplitude Method to explicitly compute the response for each such sample. With the help of the Kernel Polynomial Method, we build an estimator of the vibrational level density and provide the upper bound of the relative error in the limit of infinitely many random samples. The new algorithm can give accurate estimates of the vibrational level density. Since it is based on drawing multiple samples of perturbation operators, its computational implementation is naturally parallel and scales like the number of available processing units.
{"title":"Computing the QRPA Level Density with the Finite Amplitude Method","authors":"Antonio Bjelčić, Nicolas Schunck","doi":"arxiv-2409.07644","DOIUrl":"https://doi.org/arxiv-2409.07644","url":null,"abstract":"We describe a new algorithm to calculate the vibrational nuclear level\u0000density of an atomic nucleus. Fictitious perturbation operators that probe the\u0000response of the system are generated by drawing their matrix elements from some\u0000probability distribution function. We use the Finite Amplitude Method to\u0000explicitly compute the response for each such sample. With the help of the\u0000Kernel Polynomial Method, we build an estimator of the vibrational level\u0000density and provide the upper bound of the relative error in the limit of\u0000infinitely many random samples. The new algorithm can give accurate estimates\u0000of the vibrational level density. Since it is based on drawing multiple samples\u0000of perturbation operators, its computational implementation is naturally\u0000parallel and scales like the number of available processing units.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"401 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
L. Lalanne, M. Athanasakis-Kaklamanakis, D. D. Dao, Á. Koszorús, Y. C. Liu, R. Mancheva, F. Nowacki, J. Reilly, C. Bernerd, K. Chrysalidis, T. E. Cocolios, R. P. de Groote, K. T. Flanagan, R. F. Garcia Ruiz, D. Hanstorp, R. Heinke, M. Heines, P. Lassegues, K. Mack, B. A. Marsh, A. McGlone, K. M. Lynch, G. Neyens, B. van den Borne, R. Van Duyse, X. F. Yang, J. Wessolek
This paper reports on the measurement of the ground-state spin and nuclear magnetic dipole moment of $^{61}$Cr. The radioactive ion beam was produced at the CERN-ISOLDE facility and was probed using high-resolution resonance ionization laser spectroscopy with the CRIS apparatus. The present ground-state spin measurement $I = frac{1}{2}$, differing from the previously adopted $I =(frac{5}{2})$, has significant consequences on the interpretation of existing beta decay data and nuclear structure in the region. The structure and shape of $^{61}$Cr is interpreted with state-of-the-art Large-Scale Shell Model and Discrete-Non-Orthogonal Shell Model calculations. From the measured magnetic dipole moment $mu(^{61}$Cr$)=+0.539(7)~mu_N$ and the theoretical findings, its configuration is understood to be driven by 2 particle - 2 hole neutron excitations with an unpaired $1p_{1/2}$ neutron. This establishes the western border of the $N=40$ Island Of Inversion (IoI), characterized by 4 particle - 4 hole neutron components. We discuss the shape evolution along the Cr isotopic chain as a quantum phase transition at the entrance of the $N=40$ IoI.
{"title":"$^{61}$Cr as a Doorway to the N = 40 Island of Inversion","authors":"L. Lalanne, M. Athanasakis-Kaklamanakis, D. D. Dao, Á. Koszorús, Y. C. Liu, R. Mancheva, F. Nowacki, J. Reilly, C. Bernerd, K. Chrysalidis, T. E. Cocolios, R. P. de Groote, K. T. Flanagan, R. F. Garcia Ruiz, D. Hanstorp, R. Heinke, M. Heines, P. Lassegues, K. Mack, B. A. Marsh, A. McGlone, K. M. Lynch, G. Neyens, B. van den Borne, R. Van Duyse, X. F. Yang, J. Wessolek","doi":"arxiv-2409.07324","DOIUrl":"https://doi.org/arxiv-2409.07324","url":null,"abstract":"This paper reports on the measurement of the ground-state spin and nuclear\u0000magnetic dipole moment of $^{61}$Cr. The radioactive ion beam was produced at\u0000the CERN-ISOLDE facility and was probed using high-resolution resonance\u0000ionization laser spectroscopy with the CRIS apparatus. The present ground-state\u0000spin measurement $I = frac{1}{2}$, differing from the previously adopted $I\u0000=(frac{5}{2})$, has significant consequences on the interpretation of existing\u0000beta decay data and nuclear structure in the region. The structure and shape of\u0000$^{61}$Cr is interpreted with state-of-the-art Large-Scale Shell Model and\u0000Discrete-Non-Orthogonal Shell Model calculations. From the measured magnetic\u0000dipole moment $mu(^{61}$Cr$)=+0.539(7)~mu_N$ and the theoretical findings,\u0000its configuration is understood to be driven by 2 particle - 2 hole neutron\u0000excitations with an unpaired $1p_{1/2}$ neutron. This establishes the western\u0000border of the $N=40$ Island Of Inversion (IoI), characterized by 4 particle - 4\u0000hole neutron components. We discuss the shape evolution along the Cr isotopic\u0000chain as a quantum phase transition at the entrance of the $N=40$ IoI.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Francesco Marino, Carlo Barbieri, Gianluca Colò, Weiguang Jiang, Samuel J. Novario
Homogeneous nuclear matter is investigated using the textit{ab initio} Self-consistent Green's function (SCGF) approach with nuclear interactions based on chiral effective field theory. The employed method, which combines the state-of-the-art algebraic diagrammatic construction approximation at third order with Gorkov correlations, is capable of computing both the equation of state (EOS) and single-particle properties of nuclear matter. The EOS calculated with our approach and coupled-cluster theory are shown to agree very well. The one-nucleon spectral functions and the momentum distributions are discussed to gain insights into the dynamics of the interacting nuclear matter.
利用基于手性有效场理论的核相互作用自洽格林函数（SCGF）方法研究了均质核物质。所采用的方法结合了最先进的三阶代数图解构造近似和高尔科夫相关性，能够计算核物质的状态方程（EOS）和单粒子性质。用我们的方法和耦合簇理论计算出的 EOS 非常吻合。讨论了单核谱函数和动量分布，以深入了解相互作用核物质的动力学。
{"title":"Ab initio Green's functions approach for homogeneous nuclear matter","authors":"Francesco Marino, Carlo Barbieri, Gianluca Colò, Weiguang Jiang, Samuel J. Novario","doi":"arxiv-2409.07432","DOIUrl":"https://doi.org/arxiv-2409.07432","url":null,"abstract":"Homogeneous nuclear matter is investigated using the textit{ab initio}\u0000Self-consistent Green's function (SCGF) approach with nuclear interactions\u0000based on chiral effective field theory. The employed method, which combines the\u0000state-of-the-art algebraic diagrammatic construction approximation at third\u0000order with Gorkov correlations, is capable of computing both the equation of\u0000state (EOS) and single-particle properties of nuclear matter. The EOS\u0000calculated with our approach and coupled-cluster theory are shown to agree very\u0000well. The one-nucleon spectral functions and the momentum distributions are\u0000discussed to gain insights into the dynamics of the interacting nuclear matter.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this work, the equations of dissipative relativistic spin hydrodynamics based on quantum kinetic theory are derived. Employing the inverse-Reynolds dominance (IReD) approach, a resummation scheme based on a power counting in Knudsen and inverse Reynolds numbers is constructed, leading to hydrodynamic equations that are accurate to second order. It is found that the spin dynamics can be characterized by eleven equations: six of them describe the evolution of the components of the spin potential, while the remaining five provide the equation of motion of a dissipative irreducible rank-two tensor. For a simple truncation, the first- and second-order transport coefficients are computed explicitly.
{"title":"Resummed spin hydrodynamics from quantum kinetic theory","authors":"David Wagner","doi":"arxiv-2409.07143","DOIUrl":"https://doi.org/arxiv-2409.07143","url":null,"abstract":"In this work, the equations of dissipative relativistic spin hydrodynamics\u0000based on quantum kinetic theory are derived. Employing the inverse-Reynolds\u0000dominance (IReD) approach, a resummation scheme based on a power counting in\u0000Knudsen and inverse Reynolds numbers is constructed, leading to hydrodynamic\u0000equations that are accurate to second order. It is found that the spin dynamics\u0000can be characterized by eleven equations: six of them describe the evolution of\u0000the components of the spin potential, while the remaining five provide the\u0000equation of motion of a dissipative irreducible rank-two tensor. For a simple\u0000truncation, the first- and second-order transport coefficients are computed\u0000explicitly.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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