Slow-roll inflation in f(T,T)modified gravity  

作　　者：Aaqid Bhat Sanjay Mandal P.K.Sahoo 

机构地区：[1]Department of Mathematics,Birla Institute of Technology and Science-Pilani,Hyderabad Campus,Hyderabad-500078,India [2]Faculty of Mathematics and Computer Science,Transilvania University,Iuliu Maniu Str.50,500091 Brasov,Romania

出　　处：《Chinese Physics C》2023年第12期162-168,共7页中国物理C（英文版）

基　　金：the Science and Engineering Research Board,Department of Science and Technology,Government of India for financial support to carry out research project No.:CRG/2022/001847 and IUCAA。

摘　　要：In this study, we explore the concept of cosmological inflation within the framework of the f(T, T)theory of gravity, where f is a general function of the torsion scalar T and the trace T of the energy-momentum tensor.It is assumed that the conditions of slow-roll inflation are applicable in f(T, T) gravity. To determine different observables related to inflation, such as the tensor-to-scalar ratio r, scalar spectral index ns, spectral index αs, and tensor spectral index nt, the Hubble slow-roll parameters are utilized for a particular model of f(T, T). Lastly, an assessment is carried out to determine the feasibility of the models by conducting a numerical analysis of the parameters. The findings indicate that it is feasible to achieve compatibility with the observational measurements of slow-roll parameters by utilizing different values of the free parameters.

关 键 词：f(T T)gravity early-time cosmology dark energy equation of state slow-roll inflation 

分 类 号：P159[天文地球—天文学]