Physics Letters B最新文献_第2页

General form of f(R) and (2 + 1)-dimensional charge/non-charge black hole solutions f(R)和（2 + 1）维带电/非带电黑洞解的一般形式

IF 4.3 2区物理与天体物理

Physics Letters B Pub Date : 2025-05-12 DOI: 10.1016/j.physletb.2025.139566

G.G.L. Nashed

{"title":"General form of f(R) and (2 + 1)-dimensional charge/non-charge black hole solutions","authors":"G.G.L. Nashed","doi":"10.1016/j.physletb.2025.139566","DOIUrl":"10.1016/j.physletb.2025.139566","url":null,"abstract":"<div><div>We introduce novel black hole (BH) solutions, charge/non-charge, within the framework of <span><math><mi>f</mi><mo>(</mo><mi>R</mi><mo>)</mo></math></span> gravity, a theory that does not inherently include a cosmological constant, using equal/different metric ansatzs. Remarkably, these solutions exhibit asymptotically Anti-de Sitter (AdS) or de Sitter (dS) behavior, depending on their parameter values. Unlike the BTZ solutions of General Relativity, which feature a causal singularity and constant scalar invariants, our solutions display strong spacetime singularities, as shown by their scalar invariants. We construct <span><math><mi>f</mi><mo>(</mo><mi>R</mi><mo>)</mo></math></span> functions that behave as polynomial functions, emphasizing the unique nature of these solutions. We demonstrate the stability of these solutions in two ways: first, by showing that their heat capacity is positive, which ensures thermodynamic stability; and second, by proving that the second derivative of <span><math><mi>f</mi><mo>(</mo><mi>R</mi><mo>)</mo></math></span> is positive, meeting the Ostrogradski criterion for dynamical stability. Furthermore, the solutions satisfy the first law of thermodynamics, confirming their consistency with fundamental thermodynamic principles.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"866 ","pages":"Article 139566"},"PeriodicalIF":4.3,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069508","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}

引用次数: 0

Probing the quantum nature of curvature in the deep quantum regime of a black hole 探测黑洞深量子状态下曲率的量子性质

IF 4.3 2区物理与天体物理

Physics Letters B Pub Date : 2025-05-12 DOI: 10.1016/j.physletb.2025.139567

Harpreet Singh, Malay K. Nandy

引用次数: 0

Hadronic light-by-light scattering in the anomalous magnetic moments of electron and τ 电子和τ的反常磁矩中的强子光-光散射

IF 4.3 2区物理与天体物理

Physics Letters B Pub Date : 2025-05-12 DOI: 10.1016/j.physletb.2025.139565

Martin Hoferichter , Peter Stoffer , Maximilian Zillinger

{"title":"Hadronic light-by-light scattering in the anomalous magnetic moments of electron and τ","authors":"Martin Hoferichter , Peter Stoffer , Maximilian Zillinger","doi":"10.1016/j.physletb.2025.139565","DOIUrl":"10.1016/j.physletb.2025.139565","url":null,"abstract":"<div><div>In Refs. <span><span>[1]</span></span>, <span><span>[2]</span></span> we provided a complete dispersive evaluation of the hadronic light-by-light (HLbL) contribution to the anomalous magnetic moment of the muon. While the evaluation strategy was developed for the kinematic situation determined by the muon mass, a similar approach also applies to the HLbL corrections to the anomalous magnetic moments of the electron and <em>τ</em> lepton, shifting the sensitivity in the loop integrals to smaller and larger momenta, respectively. In this Letter, we propagate the corresponding uncertainties of the various contributions, obtaining <span><math><msubsup><mrow><mi>a</mi></mrow><mrow><mi>e</mi></mrow><mrow><mtext>HLbL</mtext></mrow></msubsup><mo>=</mo><mn>3.51</mn><mo>(</mo><mn>23</mn><mo>)</mo><mo>×</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>14</mn></mrow></msup></math></span> and <span><math><msubsup><mrow><mi>a</mi></mrow><mrow><mi>τ</mi></mrow><mrow><mtext>HLbL</mtext></mrow></msubsup><mo>=</mo><mn>3.77</mn><mo>(</mo><mn>29</mn><mo>)</mo><mo>×</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>8</mn></mrow></msup></math></span>.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"866 ","pages":"Article 139565"},"PeriodicalIF":4.3,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144084167","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}

引用次数: 0

Two-layered compact star in biquadratic spatial metric with distinct core-shell equations of state 双二次空间度量中具有不同核壳状态方程的双层致密星

IF 4.3 2区物理与天体物理

Physics Letters B Pub Date : 2025-05-12 DOI: 10.1016/j.physletb.2025.139572

Shweta Saklany , Neeraj Pant , Brajesh Pandey

引用次数: 0

Fermions in a (2+1)-dimensional magnetized spacetime with a cosmological constant: Domain walls and spinning magnetic vortices

IF 4.3 2区物理与天体物理

Physics Letters B Pub Date : 2025-05-12 DOI: 10.1016/j.physletb.2025.139569

Omar Mustafa , Abdullah Guvendi

{"title":"Fermions in a (2+1)-dimensional magnetized spacetime with a cosmological constant: Domain walls and spinning magnetic vortices","authors":"Omar Mustafa , Abdullah Guvendi","doi":"10.1016/j.physletb.2025.139569","DOIUrl":"10.1016/j.physletb.2025.139569","url":null,"abstract":"<div><div>In this study, we investigate the relativistic dynamics of fermions in a (2+1)-dimensional sector of the Bonnor-Melvin magnetic (BMM) spacetime background, which features a homogeneous magnetic field aligned with the symmetry axis and a nonzero cosmological constant while maintaining Lorentz invariance under boosts along the z-direction. We analyze the (2+1)-dimensional solution in gravity coupled with nonlinear electrodynamics, excluding the presence of a brane, and derive the radial wave equation governing relativistic fermions in this background. By transforming the problem into a one-dimensional Schrödinger-like equation, we obtain exact eigenvalue solutions, demonstrating that the system supports impenetrable magnetic domain walls that confine fermionic states. In the process, it is unavoidable to extend our analysis to massless fermions, where we establish the generality (as a byproduct and a side effect of the current study, so to speak) of our findings and show that the stationary states of Dirac-Weyl fermions can give rise to rotating ring-like modes, supporting the presence of spinning magnetic vortices in, for example, magnetized monolayer Dirac materials.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"866 ","pages":"Article 139569"},"PeriodicalIF":4.3,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143943310","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}

引用次数: 0

Accretion of the degenerate Fermi gas onto a Reissner-Nordström black hole

IF 4.3 2区物理与天体物理

Physics Letters B Pub Date : 2025-05-12 DOI: 10.1016/j.physletb.2025.139555

Ping Li , Jiang-he Yang , Siwei Xu

{"title":"Accretion of the degenerate Fermi gas onto a Reissner-Nordström black hole","authors":"Ping Li , Jiang-he Yang , Siwei Xu","doi":"10.1016/j.physletb.2025.139555","DOIUrl":"10.1016/j.physletb.2025.139555","url":null,"abstract":"<div><div>We extend the Rioseco and Sarbach model into Reissner-Nordström black hole accretes degenerate relativistic Fermi gas. The accretion theory is based on the Boyer-Lindquist coordinates and the Fermi gas follows Fermi-Dirac statistics at infinity. The expressions for the particle current density, the stress energy-momentum tensor, and three accretion rates are derived. We first investigated the impact of Risoseco and Sarbach model on the evolution of a black hole's charge. The results show that both the mass accretion rate and charge accretion rate are proportional to the particle accretion rate. We have also provided analytical results at infinity and numerical results within a finite range for these quantities. Our results indicate that the accretion rate decreases as the charge of the black hole increases, suggesting that our accretion model does not violate the cosmic censorship hypothesis. In this paper, we first point out that the accretion of Vlasov gas behaves as an anisotropic fluid containing two perfect-fluid components. One component represents the isotropic Fermi gas fluid, while the other represents a coordinate-dependent null fluid. When using the Boyer-Lindquist coordinate system, we observed that the contribution from the null fluid persists even at infinity, which led to the radial pressure always smaller than the tangential pressure.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"866 ","pages":"Article 139555"},"PeriodicalIF":4.3,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143943311","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}

引用次数: 0

Exploring the ϕ-α interaction via femtoscopic study

IF 4.3 2区物理与天体物理

Physics Letters B Pub Date : 2025-05-12 DOI: 10.1016/j.physletb.2025.139564

Faisal Etminan

{"title":"Exploring the ϕ-α interaction via femtoscopic study","authors":"Faisal Etminan","doi":"10.1016/j.physletb.2025.139564","DOIUrl":"10.1016/j.physletb.2025.139564","url":null,"abstract":"<div><div>Very recently the Wood-Saxon (WS) type interaction in the single-folding potential (SFP) approach are constructed to simulate the <span><math><mi>ϕ</mi><mtext>-</mtext><mi>α</mi></math></span> potentials. One set of the <span><math><mi>ϕ</mi><mtext>-</mtext><mi>α</mi></math></span> potentials are based on the first principle HAL QCD <span><math><mi>ϕ</mi><mtext>-</mtext><mi>N</mi></math></span> interactions in <span><math><mmultiscripts><mrow><mtext>S</mtext></mrow><mrow><mn>3</mn><mo>/</mo><mn>2</mn></mrow><none></none><mprescripts></mprescripts><none></none><mrow><mn>4</mn></mrow></mmultiscripts></math></span> channel, and in another set, the <em>ϕ</em>-meson nucleus potentials were calculated by employing the quark-meson coupling (QMC) model. By utilizing these two sets of <span><math><mi>ϕ</mi><mtext>-</mtext><mi>α</mi></math></span> potentials, the two-particle momentum correlation of <span><math><mi>ϕ</mi><mtext>-</mtext><mi>α</mi></math></span> in high-energy heavy ion collisions is explored. The numerical results show that the correlation functions at small source size (high density nuclear medium) depend on the employed potential model. Also, the correlation functions are obtained within the Lednicky-Lyuboshits (LL) formalism. For small source size, it is found that, the LL formula returns significantly different values due to the large interaction range of the <span><math><mi>ϕ</mi><mtext>-</mtext><mi>α</mi></math></span> potential.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"866 ","pages":"Article 139564"},"PeriodicalIF":4.3,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143943320","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}

引用次数: 0

Searching for the dark photon at the Future Circular Lepton Collider

IF 4.3 2区物理与天体物理

Physics Letters B Pub Date : 2025-05-12 DOI: 10.1016/j.physletb.2025.139573

X.G. Wang, A.W. Thomas

引用次数: 0

Dominance of gluonic scale anomaly in confining pressure inside nucleon and D-term

IF 4.3 2区物理与天体物理

Physics Letters B Pub Date : 2025-05-11 DOI: 10.1016/j.physletb.2025.139559

Daisuke Fujii , Mamiya Kawaguchi , Mitsuru Tanaka

{"title":"Dominance of gluonic scale anomaly in confining pressure inside nucleon and D-term","authors":"Daisuke Fujii , Mamiya Kawaguchi , Mitsuru Tanaka","doi":"10.1016/j.physletb.2025.139559","DOIUrl":"10.1016/j.physletb.2025.139559","url":null,"abstract":"<div><div>We explore the confining pressure inside the nucleon and the related gravitational form factor referred to as the D-term, using the skyrmion approach based on the scale-invariant chiral perturbation theory, where the skyrmion is described as the nucleon and a scalar meson couples to the scale anomaly through the low energy theorem. Within this model framework, the current quark mass and gluonic quantum contributions to the scale anomaly can be described by the pion and scalar meson masses, respectively, through matching with the underlying QCD. By considering the decomposition of the energy momentum tensor of nucleon, we examine the role of the scale anomaly contributions in the pressure inside the nucleon. As a result, the gluonic scale anomaly is found to dominate the confining pressure. Compared to the result based on the conventional chiral perturbation theory in the chiral limit, our result for the total pressure is capable of qualitatively improving the alignment with lattice QCD observations. Moreover, the pressure from the gluonic scale anomaly is widely distributed in position space, leading to its substantial contribution to the D-term.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"866 ","pages":"Article 139559"},"PeriodicalIF":4.3,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143943327","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}

引用次数: 0

Experimental impact of jet fragmentation reference frames at particle colliders

IF 4.3 2区物理与天体物理

Physics Letters B Pub Date : 2025-05-09 DOI: 10.1016/j.physletb.2025.139561

Lawrence Lee, Charles Bell, John Lawless, Cordney Nash, Emery Nibigira

引用次数: 0