Pub Date : 2023-09-07DOI: 10.1103/PhysRevD.108.064010
G. Bozzola, V. Paschalidis
In contrast to energy and angular momentum, electric charge is conserved in mergers of charged black holes. This opens up the possibility for the remnant to have Kerr-Newman parameter $chi^{2} + lambda^{2}$ greater than 1 (with $chi$ and $lambda$ being the black hole dimensionless spin and dimensionless charge, respectively), which is forbidden by the cosmic censorship conjecture. In this paper, we investigate whether a naked singularity can form in quasi-circular mergers of charged binary black holes. We extend a theoretical model to estimate the final properties of the remnant left by quasicircular mergers of binary black holes to the charged case. We validate the model with numerical-relativity simulations, finding agreement at the percent level. We then use our theoretical model to argue that while naked singularities cannot form following quasi-circular mergers of non-spinning charged binary black holes, it is possible to produce remnants that are arbitrarily close to the extremal limit.
{"title":"Can quasicircular mergers of charged black holes produce extremal black holes?","authors":"G. Bozzola, V. Paschalidis","doi":"10.1103/PhysRevD.108.064010","DOIUrl":"https://doi.org/10.1103/PhysRevD.108.064010","url":null,"abstract":"In contrast to energy and angular momentum, electric charge is conserved in mergers of charged black holes. This opens up the possibility for the remnant to have Kerr-Newman parameter $chi^{2} + lambda^{2}$ greater than 1 (with $chi$ and $lambda$ being the black hole dimensionless spin and dimensionless charge, respectively), which is forbidden by the cosmic censorship conjecture. In this paper, we investigate whether a naked singularity can form in quasi-circular mergers of charged binary black holes. We extend a theoretical model to estimate the final properties of the remnant left by quasicircular mergers of binary black holes to the charged case. We validate the model with numerical-relativity simulations, finding agreement at the percent level. We then use our theoretical model to argue that while naked singularities cannot form following quasi-circular mergers of non-spinning charged binary black holes, it is possible to produce remnants that are arbitrarily close to the extremal limit.","PeriodicalId":48711,"journal":{"name":"Physical Review D","volume":" ","pages":""},"PeriodicalIF":5.0,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43688694","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 : 2023-09-07DOI: 10.1103/physrevd.108.056005
C. Fosco, G. Hansen
{"title":"Dynamical Casimir effect for fermions in 2+1 dimensions","authors":"C. Fosco, G. Hansen","doi":"10.1103/physrevd.108.056005","DOIUrl":"https://doi.org/10.1103/physrevd.108.056005","url":null,"abstract":"","PeriodicalId":48711,"journal":{"name":"Physical Review D","volume":" ","pages":""},"PeriodicalIF":5.0,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43751280","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 : 2023-09-07DOI: 10.1103/physrevd.108.056006
J. Gracey, R. H. Mason
{"title":"Crewther’s relation, schemes, gauges, and fixed points","authors":"J. Gracey, R. H. Mason","doi":"10.1103/physrevd.108.056006","DOIUrl":"https://doi.org/10.1103/physrevd.108.056006","url":null,"abstract":"","PeriodicalId":48711,"journal":{"name":"Physical Review D","volume":" ","pages":""},"PeriodicalIF":5.0,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47115697","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 : 2023-09-07DOI: 10.1103/physrevd.108.065004
A. Barvinsky, D. Nesterov
We develop a Lagrangian quantization formalism for a class of theories obtained by the restriction of the configuration space of gauge fields from a wider (parental) gauge theory. This formalism is based on application of the Batalin-Vilkovisky technique for quantization of theories with linearly dependent generators, their linear dependence originating from a special type of projection from the originally irreducible gauge generators of the parental theory. The algebra of these projected generators is shown to be closed for parental gauge algebras closed off shell. We demonstrate that new physics of the restricted theory, as compared to its parental theory, is associated with the rank deficiency of a special gauge-restriction operator reflecting the gauge transformations of the restriction constraints functions -- this distinguishes the restricted theory from its partial gauge fixing. As a byproduct of this technique a workable algorithm for the one-loop effective action in generic first-stage reducible theory was constructed, along with the explicit set of tree-level Ward identities for gauge field, ghost, and ghosts-for-ghosts propagators. The formalism is applied to unimodular gravity theory, and its one-loop effective action is obtained in terms of functional determinants of minimal second-order operators, calculable on generic backgrounds by Schwinger-DeWitt technique of local curvature expansion. The result is shown to be equivalent to Einstein gravity theory with a cosmological term up to a special contribution of the global degree of freedom associated with the variable value of the cosmological constant. The role of this degree of freedom in a special duality relation between Einstein theory and unimodular gravity is briefly discussed.
{"title":"Restricted gauge theory formalism and unimodular gravity","authors":"A. Barvinsky, D. Nesterov","doi":"10.1103/physrevd.108.065004","DOIUrl":"https://doi.org/10.1103/physrevd.108.065004","url":null,"abstract":"We develop a Lagrangian quantization formalism for a class of theories obtained by the restriction of the configuration space of gauge fields from a wider (parental) gauge theory. This formalism is based on application of the Batalin-Vilkovisky technique for quantization of theories with linearly dependent generators, their linear dependence originating from a special type of projection from the originally irreducible gauge generators of the parental theory. The algebra of these projected generators is shown to be closed for parental gauge algebras closed off shell. We demonstrate that new physics of the restricted theory, as compared to its parental theory, is associated with the rank deficiency of a special gauge-restriction operator reflecting the gauge transformations of the restriction constraints functions -- this distinguishes the restricted theory from its partial gauge fixing. As a byproduct of this technique a workable algorithm for the one-loop effective action in generic first-stage reducible theory was constructed, along with the explicit set of tree-level Ward identities for gauge field, ghost, and ghosts-for-ghosts propagators. The formalism is applied to unimodular gravity theory, and its one-loop effective action is obtained in terms of functional determinants of minimal second-order operators, calculable on generic backgrounds by Schwinger-DeWitt technique of local curvature expansion. The result is shown to be equivalent to Einstein gravity theory with a cosmological term up to a special contribution of the global degree of freedom associated with the variable value of the cosmological constant. The role of this degree of freedom in a special duality relation between Einstein theory and unimodular gravity is briefly discussed.","PeriodicalId":48711,"journal":{"name":"Physical Review D","volume":" ","pages":""},"PeriodicalIF":5.0,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42909228","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 : 2023-09-06DOI: 10.1103/physrevd.108.064008
Harrison Siegel, M. Isi, Will M. Farr
{"title":"Ringdown of GW190521: Hints of multiple quasinormal modes with a precessional interpretation","authors":"Harrison Siegel, M. Isi, Will M. Farr","doi":"10.1103/physrevd.108.064008","DOIUrl":"https://doi.org/10.1103/physrevd.108.064008","url":null,"abstract":"","PeriodicalId":48711,"journal":{"name":"Physical Review D","volume":" ","pages":""},"PeriodicalIF":5.0,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48407322","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 : 2023-09-06DOI: 10.1103/physrevd.108.064006
Adrián Casado-Turrión, Á. de la Cruz-Dombriz, A. Dobado
{"title":"Physical nonviability of a wide class of f(R) models and their constant-curvature solution","authors":"Adrián Casado-Turrión, Á. de la Cruz-Dombriz, A. Dobado","doi":"10.1103/physrevd.108.064006","DOIUrl":"https://doi.org/10.1103/physrevd.108.064006","url":null,"abstract":"","PeriodicalId":48711,"journal":{"name":"Physical Review D","volume":" ","pages":""},"PeriodicalIF":5.0,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46956775","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 : 2023-09-05DOI: 10.1103/physrevd.108.062003
E. Adams, B. Ali, I. Arnquist, D. Baxter, E. Behnke, M. Bressler, B. Broerman, C. J. Chen, K. Clark, J. Collar, P. S. Cooper, C. Cripe, M. Crisler, C. Dahl, M. Das, S. Fallows, J. Farine, R. Filgas, A. García-Viltres, G. Giroux, O. Harris, T. Hillier, E. Hoppe, C. Jackson, M. Jin, C. Krauss, V. Kumar, M. Laurin, I. Lawson, A. Leblanc, H. Leng, I. Levine, C. Licciardi, W. Lippincott, P. Mitra, V. Monette, C. Moore, R. Neilson, A. Noble, H. Nozard, S. Pal, M. Piro, A. Plante, S. Priya, C. Rethmeier, A. Robinson, J. Savoie, A. Sonnenschein, N. Starinski, I. Štekl, D. Tiwari, E. Vázquez-Jáuregui, U. Wichoski, V. Zacek, J. Zhang
{"title":"Search for inelastic dark matter-nucleus scattering with the PICO-60 CF3","authors":"E. Adams, B. Ali, I. Arnquist, D. Baxter, E. Behnke, M. Bressler, B. Broerman, C. J. Chen, K. Clark, J. Collar, P. S. Cooper, C. Cripe, M. Crisler, C. Dahl, M. Das, S. Fallows, J. Farine, R. Filgas, A. García-Viltres, G. Giroux, O. Harris, T. Hillier, E. Hoppe, C. Jackson, M. Jin, C. Krauss, V. Kumar, M. Laurin, I. Lawson, A. Leblanc, H. Leng, I. Levine, C. Licciardi, W. Lippincott, P. Mitra, V. Monette, C. Moore, R. Neilson, A. Noble, H. Nozard, S. Pal, M. Piro, A. Plante, S. Priya, C. Rethmeier, A. Robinson, J. Savoie, A. Sonnenschein, N. Starinski, I. Štekl, D. Tiwari, E. Vázquez-Jáuregui, U. Wichoski, V. Zacek, J. Zhang","doi":"10.1103/physrevd.108.062003","DOIUrl":"https://doi.org/10.1103/physrevd.108.062003","url":null,"abstract":"","PeriodicalId":48711,"journal":{"name":"Physical Review D","volume":" ","pages":""},"PeriodicalIF":5.0,"publicationDate":"2023-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44358135","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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