Polarization of Gravitational Waves in Modified Gravity

被引：6
作者：
Khlopov, Maxim [1 ,2 ,3 ]
Chowdhury, Sourav Roy [1 ,4 ]
机构：
[1] Southern Fed Univ, Res Inst Phys, Rostov Na Donu 344090, Russia
[2] Virtual Inst Astroparticle Phys, F-75018 Paris, France
[3] Natl Res Nucl Univ MEPHI, Ctr Cosmoparticle Phys Cosm, Moscow 115409, Russia
[4] Vidyasagar Coll, Dept Phys, Kolkata 700006, India
来源：
SYMMETRY-BASEL | 2023年 / 15卷 / 04期
关键词：
gravitational waves; modified gravity; polarization modes; COSMOLOGICAL CONSTANT; TOOL;
D O I：
10.3390/sym15040832
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
An investigation has been carried out on a reconfigured form of the Einstein-Hilbert action, denoted by f(R,Tf), where Tf represents the energy-momentum tensor trace of the scalar field under consideration. The study has focused on how the structural behavior of the scalar field changes based on the potential's shape, which has led to the development of a new set of Friedmann equations. In the context of modified theories, researchers have extensively explored the range of gravitational wave polarization modes associated with relevant fields. In addition to the two transverse-traceless tensor modes that are typically observed in general relativity, two additional scalar modes have been identified: a massive longitudinal mode and a massless transverse mode, also known as the breathing mode.
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页数：13
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