The European Physical Journal C最新文献_第9页

Proton structure from a soft-wall holographic QCD model: mass spectrum, form factors, and mechanical properties 软壁全息QCD模型的质子结构：质谱、形状因素和力学性能

IF 4.9 2区物理与天体物理

The European Physical Journal C Pub Date : 2026-08-07 DOI: 10.1140/epjc/s10052-026-16205-x

Jiali Deng, Defu Hou

引用次数: 0

Interior geometry of black holes as a probe of first-order phase transition 作为一阶相变探测的黑洞内部几何

IF 4.9 2区物理与天体物理

The European Physical Journal C Pub Date : 2026-08-06 DOI: 10.1140/epjc/s10052-026-16149-2

Zi-Qiang Zhao, Zhang-Yu Nie, Shao-Wen Wei, Jing-Fei Zhang, Xin Zhang

{"title":"Interior geometry of black holes as a probe of first-order phase transition","authors":"Zi-Qiang Zhao, Zhang-Yu Nie, Shao-Wen Wei, Jing-Fei Zhang, Xin Zhang","doi":"10.1140/epjc/s10052-026-16149-2","DOIUrl":"10.1140/epjc/s10052-026-16149-2","url":null,"abstract":"<div>Traditional diagnostics of black hole phase transitions rely on thermodynamic quantities defined at the event horizon or asymptotic boundary. Here, we demonstrate that the near-singularity geometry offers a sharp, independent probe of both first-order phase transitions and supercritical crossover. For scalarized AdS black holes exhibiting a first-order phase transition, the Kasner exponent (p_t), which characterizes the approach to the singularity, undergoes a dramatic transformation. On one side of the transition, (p_t) oscillates strongly with temperature, reflecting violent interior dynamics. On the other side, it becomes a smooth, monotonically varying function. These two distinct behaviors converge as the critical point is approached. Beyond the critical point, in the supercritical region, (p_t(T)) develops a distinct extremum, defining a “Kasner crossover line” that is entirely independent of traditional thermodynamic (Widom line) or dynamic (Frenkel line) criteria. Our work establishes the near-singularity geometry of scalarized black holes as a novel class of diagnostics for phase transitions, revealing that a change in the macroscopic thermodynamic state fundamentally reshapes the deepest interior structure of spacetime.</div>","PeriodicalId":788,"journal":{"name":"The European Physical Journal C","volume":"86 8","pages":""},"PeriodicalIF":4.9,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjc/s10052-026-16149-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148750967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unitarity of partially broken massless higher-spin models 部分破缺无质量高自旋模型的统一性

IF 4.9 2区物理与天体物理

The European Physical Journal C Pub Date : 2026-08-06 DOI: 10.1140/epjc/s10052-026-16197-8

D. Dalmazi, B. dos S. Martins, E. L. Mendonça, R. Schimidt Bittencourt

引用次数: 0

Constant roll inflation and reconstruction of scalar field potential in f(T) gravity f(T)重力下标量场势的恒定翻滚膨胀与重构

IF 4.9 2区物理与天体物理

The European Physical Journal C Pub Date : 2026-08-06 DOI: 10.1140/epjc/s10052-026-16208-8

B. Mishra, S. K. Tripathy

引用次数: 0

Expected redshift drift for tilted observers 倾斜观测者的预期红移漂移

IF 4.9 2区物理与天体物理

The European Physical Journal C Pub Date : 2026-08-06 DOI: 10.1140/epjc/s10052-026-16204-y

Franco R. de Pedro, Gabriel R. Bengochea

引用次数: 0

Magnetic-monopole resummation justifies perturbatively calculated collider production cross sections 磁单极恢复证明了微扰计算的对撞机生产截面

IF 4.9 2区物理与天体物理

The European Physical Journal C Pub Date : 2026-08-06 DOI: 10.1140/epjc/s10052-026-16085-1

Jean Alexandre, Nick E. Mavromatos, Vasiliki A. Mitsou, Emanuela Musumeci

{"title":"Magnetic-monopole resummation justifies perturbatively calculated collider production cross sections","authors":"Jean Alexandre, Nick E. Mavromatos, Vasiliki A. Mitsou, Emanuela Musumeci","doi":"10.1140/epjc/s10052-026-16085-1","DOIUrl":"10.1140/epjc/s10052-026-16085-1","url":null,"abstract":"<div>A one-loop resummation scheme, inspired by Dyson–Schwinger (DS) formalism of strongly coupled quantum field theories, is applied to spin-1/2 magnetic monopoles (MMs), in the context of an effective field theory (EFT), invariant under the gauge group (mathrm U(1)_{em}otimes U(1)^prime ), where (mathrm U(1)^prime ) is a dual strongly coupled Abelian interaction, associated with a ‘dark photon’. The latter leads to a MM appearing as a limiting case of a ‘dyon’, with a tiny ‘electric charge’, compensated by a huge wave-function renormalization of the MM, thereby leading to a finite renormalized MM–photon coupling. An ultra-violet fixed point structure is found in the resummed theory, which is purely non-perturbative due to different boundary conditions of the resummation equations, compared to the weak coupling (perturbative) case. The renormalized coupling of the MM to the electromagnetic photon in the fixed-point theory is identified with the magnetic charge, compatible with the Dirac quantization condition. This provides for the first time a formal justification of the use of tree-level Drell–Yan and photon-fusion MM production processes in collider searches, and of the corresponding cross sections and MM mass bounds thereof. The latter provide a means to constrain the resummed-EFT parameters experimentally. The DS resummation applies here primarily to elementary MMs. However, this approach may also be applied to the last stage (collapse) of the formation of composite MM pairs at colliders, in case they behave as quantum excitations, with their core radius comparable to the Compton wavelength, thereby avoiding the extreme suppression of their production.\u0000</div>","PeriodicalId":788,"journal":{"name":"The European Physical Journal C","volume":"86 8","pages":""},"PeriodicalIF":4.9,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjc/s10052-026-16085-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148750934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Polarization images of non-topological soliton Bardeen boson stars 非拓扑孤子巴丁玻色子恒星的偏振图像

IF 4.9 2区物理与天体物理

The European Physical Journal C Pub Date : 2026-08-06 DOI: 10.1140/epjc/s10052-026-16176-z

Xiao-Xiong Zeng, Chen-Yu Yang, Ke-Jian He, Li-Fang Li

{"title":"Polarization images of non-topological soliton Bardeen boson stars","authors":"Xiao-Xiong Zeng, Chen-Yu Yang, Ke-Jian He, Li-Fang Li","doi":"10.1140/epjc/s10052-026-16176-z","DOIUrl":"10.1140/epjc/s10052-026-16176-z","url":null,"abstract":"<div>In this study, we investigate the polarized images of non-topological soliton Bardeen boson stars by solving the coupled Einstein nonlinear electrodynamics complex scalar field equations, based on the thin accretion disk model surrounding these compact objects. We focus on the influence of key parameters, including the initial scalar field, magnetic charge, observer inclination angle, and magnetic field configuration, on the resulting polarization characteristics. The results show that the geometry of the magnetic field, particularly the relative strength between the radial (B_r) and angular (B_theta ) components, plays a crucial role in determining the polarization pattern. Additionally, variations in the scalar field amplitude and magnetic charge significantly affect both the intensity and spatial distribution of the polarization. These results show that the polarization morphology is sensitive to the spacetime geometry and magnetic field configuration, and provide a qualitative basis for comparing boson stars with black holes.\u0000</div>","PeriodicalId":788,"journal":{"name":"The European Physical Journal C","volume":"86 8","pages":""},"PeriodicalIF":4.9,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjc/s10052-026-16176-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148750613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A quantum theory of gravity 引力的量子理论

IF 4.9 2区物理与天体物理

The European Physical Journal C Pub Date : 2026-08-06 DOI: 10.1140/epjc/s10052-026-16211-z

Antonio Peña Peña

引用次数: 0

Observational signature of Reissner–Nordstr(ddot{textrm{o}})m–Tangherlini black hole Reissner-Nordstr (ddot{textrm{o}}) m-Tangherlini黑洞的观测特征

IF 4.9 2区物理与天体物理

The European Physical Journal C Pub Date : 2026-08-05 DOI: 10.1140/epjc/s10052-026-16175-0

Weiqiang Yang, Mirzabek Alloqulov, Akbar Davlataliev, Ahmadjon Abdujabbarov, Bobomurat Ahmedov, Chengxun Yuan, Chen Zhou

引用次数: 0

Redshift-space distortion in modified Gauss–Bonnet gravity 修正高斯-邦纳引力中的红移空间畸变

IF 4.9 2区物理与天体物理

The European Physical Journal C Pub Date : 2026-08-05 DOI: 10.1140/epjc/s10052-026-16157-2

Albert Munyeshyaka, Praveen Kumar Dhankar, Vinod Kumar Bhardwaj, Saibal Ray, Joseph Ntahompagaze

{"title":"Redshift-space distortion in modified Gauss–Bonnet gravity","authors":"Albert Munyeshyaka, Praveen Kumar Dhankar, Vinod Kumar Bhardwaj, Saibal Ray, Joseph Ntahompagaze","doi":"10.1140/epjc/s10052-026-16157-2","DOIUrl":"10.1140/epjc/s10052-026-16157-2","url":null,"abstract":"<div>In the present paper, we consider both background dynamic and cosmological perturbations in the framework of modified Gauss–Bonnet gravity model (i.e. f(G)) which is effective in fitting observational datasets. We assume a specific functional form of it as (f(G)=alpha G^{n}), where (alpha ) and n are model parameters. After studying the predictions on the expansion history as revealed by CC, CMB, BAO-DESI, Pantheon+SH0ES and Union 3.0 datasets, a suitable constraining of the cosmological parameters has been opted for. We show the linear cosmological perturbations for the full system to investigate the matter fluctuations under the covariant technique. The solutions to the coupled system of perturbation equations are then computed both in long- and short-wavelength modes, in a dust-Gauss–Bonnet fluids system. Using the redshift-space distortion (RSD) datasets consisting of (fsigma _8) values and MCMC simulations, we present the best-fit cosmological parameters (viz. (H_0), (Omega _{m0}), (sigma _8) and n).\u0000</div>","PeriodicalId":788,"journal":{"name":"The European Physical Journal C","volume":"86 8","pages":""},"PeriodicalIF":4.9,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjc/s10052-026-16157-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148750844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0