Energy conditions in f(Q) gravity

被引：212
作者：
Mandal, Sanjay [1 ]
Sahoo, P. K. [1 ]
Santos, J. R. L. [2 ]
机构：
[1] Birla Inst Technol & Sci Pilani, Dept Math, Hyderabad Campus, Hyderabad 500078, India
[2] UFCG Univ Fed Campina Grande, Unidade Acad Fis, BR-58429900 Campina Grande, PB, Brazil
来源：
PHYSICAL REVIEW D | 2020年 / 102卷 / 02期
关键词：
D O I：
10.1103/PhysRevD.102.024057
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A complete theory of gravity impels us to go beyond Einstein's general relativity. One promising approach lies in a new class of teleparallel theory of gravity named f(Q), where the nonmetricity Q is responsible for the gravitational interaction. The important roles any of these alternative theories should obey are the energy condition constraints. Such constraints establish the compatibility of a given theory with the causal and geodesic structure of space-time. In this work, we present a complete test of energy conditions for f(Q) gravity models. The energy conditions allowed us to fix our free parameters, restricting the families of f(Q) models compatible with the accelerated expansion our Universe passes through. Our results strengthen the viability of f(Q) theory, leading us close to the dawn of a complete theory for gravitation.
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页数：8
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