Anisotropic quark stars in f(R,L_(m),T)gravity  

作　　者：Takol Tangphati İzzet Sakallı Ayan Banerjee Anirudh Pradhan 

机构地区：[1]School of Science,Walailak University,Thasala,Nakhon Si Thammarat,80160,Thailand [2]Research Center for Theoretical Simulation and Applied Research in Bioscience and Sensing,Walailak University,Thasala,Nakhon Si Thammarat 80160,Thailand [3]Physics Department,Eastern Mediterranean University,Famagusta 99628,North Cyprus via Mersin 10,Turkey [4]Atrophysics Research Centre,School of Mathematics,Statistics and Computer Science,University of KwaZulu–Natal,Durban 4000,South Africa [5]Centre for Cosmology,Astrophysics and Space Science,GLA University,Mathura-281406,Uttar Pradesh,India

出　　处：《Chinese Physics C》2025年第2期266-277,共12页中国物理C(英文版)

基　　金：Supported by Walailak University under the New Researcher Development scheme(WU67268);A.Pradhan expresses gratitude to the IUCCA in Pune,India,for offering facilities under associateship programs.In addition,İzzet Sakallıthanks TÜBİTAK,ANKOS,and SCOAP3 for their contributions.Takol Tangphati andİzzet Sakallıalso appreciate COST Actions CA21106 and CA22113 for their networking support。

摘　　要：We investigated the impact of f(R,L_(m),T)gravity on the internal structure of compact stars,expecting this theory to manifest prominently in the high-density cores of such stars.We considered the algebraic function,f(R,L_(m),T)=R+αTL_(m),whereαrepresents the matter-geometry coupling constant.We specifically chose the matter Lagrangian density L_(m)=-ρto explore compact stars with anisotropic pressure.To this end,we employed the MIT bag model as an equation of state.Subsequently,we numerically solved the hydrostatic equilibrium equations to obtain mass-radius relations for quark stars(QSs),examining static stability criteria,adiabatic index,and speed of sound.Finally,we used recent astrophysical data to constrain the coupling parameterα,which may lead to either larger or smaller masses for QSs,compared to their counterparts in general relativity.

关 键 词：f(R L_(m) T)gravity anisotropic quark stars compact stars MIT bag model matter-geometry coupling 

分 类 号：O57[理学—粒子物理与原子核物理]