Anisotropic stars in modified gravity:An extended gravitational decoupling approach  

作　　者：S.K.Maurya B.Mishra Saibal Ray Riju Nag 

机构地区：[1]Department of Mathematical and Physical Sciences,College of Arts and Science,University of Nizwa,Nizwa,Sultanate of Oman [2]Department of Mathematics,Birla Institute of Technology and Science-Pilani,Hyderabad Campus,Hyderabad 500078,India [3]Centre for Cosmology,Astrophysics and Space Science(CCASS),GLA University,Mathura 281406,Uttar Pradesh,India [4]Department of Mathematics and Physical Sciences,College of Arts and Sciences,University of Nizwa,Nizwa,Sultanate of Oman

出　　处：《Chinese Physics C》2022年第10期239-258,共20页中国物理C（英文版）

基　　金：TRC Project(Grant No.BFP/RGP/CBS-/19/099),the Sultanate of Oman;continuous support and encouragement from the administration of University of Nizwa。

摘　　要：In this study,we conduct an investigation on decoupling gravitational sources under the framework of f(R,T)gravity.Basically,the complete geometric deformation technique is employed,which facilitates finding the exact solutions to the anisotropic astrophysical system smoothly without imposing any particular ansatz for the deformation function.In addition,we used 5-dimensional Euclidean spacetime in order to describe the embedding Class Ⅰ spacetime in order to obtain a solvable spherical physical system.The resulting solutions are both physically interesting and viable with new possibilities for investigation.Notably,the present investigation demonstrates that the mixture of f(R,T)+CGD translates to a scenario beyond the pure GR realm and helps to enhance the features of the interior astrophysical aspects of compact stellar objects.To determine the physical acceptability and stability of the stellar system based on the obtained solutions,we conducted a series of physical tests that satisfied all stability criteria,including the nonsingular nature of density and pressure.

关 键 词：modified gravity embedding class I spacetime neutron stars 

分 类 号：P152[天文地球—天文学]