Static spherically symmetric wormholes in f(Q,T)gravity  

作　　者：Moreshwar Tayde Zinnat Hassan P.K.Sahoo Sashideep Gutti 

机构地区：[1]Department of Mathematics,Birla Institute of Technology and Science-Pilani,Hyderabad Campus,Hyderabad-500078,India [2]Department of Physics,Birla Institute of Technology and Science-Pilani,Hyderabad Campus,Hyderabad-500078,India

出　　处：《Chinese Physics C》2022年第11期275-290,共16页中国物理C（英文版）

基　　金：University Grants Commission(UGC),New Delhi,India,for awarding National Fellowship for Scheduled Caste Students(UGC-Ref.No.:201610123801);the Department of Science and Technology(DST),Government of India,New Delhi,for awarding a Senior Research Fellowship(File No.DST/INSPIRE Fellowship/2019/IF190911);National Board for Higher Mathematics(NBHM)under Department of Atomic Energy(DAE),Govt.of India for financial support to carry out the Research project No.:02011/3/2022 NBHM(R.P.)/R&D II/2152 Dt.14.02.2022。

摘　　要：In this study,we obtain wormhole solutions in the recently proposed extension of symmetric teleparallel gravity,known as f(Q,T)gravity.Here,the gravitational Lagrangian L is defined by an arbitrary function f of Q and T,where Q is a non-metricity scalar,and T is the trace of the energy-momentum tensor.In this study,we obtain field equations for a static spherically symmetric wormhole metric in the context of general f(Q,T)gravity.We study the wormhole solutions using(ⅰ)a linear equation of state and(ⅱ)an anisotropy relation.We adopt two different forms of f(Q,T),(a)linear f(Q,T)=αQ+βT and(b)non-linear f(Q,T)=Q+λQ^(2)+ηT,to investigate these solutions.We investigate various energy conditions to search for preservation and violation among the obtained solutions and find that the null energy condition is violated in both cases of our assumed forms of f(Q,T).Finally,we perform a stability analysis using the Tolman-Oppenheimer-Volkov equation.

关 键 词：WORMHOLE EOS energy conditions stability analysis f(Q T)gravity 

分 类 号：P159[天文地球—天文学]