Polarization of gravitational waves in symmetric teleparallel theories of gravity and their modifications

被引：96

作者：

Soudi, Ismail ^{[1
,2
]}

Farrugia, Gabriel ^{[1
,2
]}

Said, Jackson Levi ^{[1
,2
]}

Gakis, Viktor ^{[1
,3
]}

Saridakis, Emmanuel N. ^{[3
,4
]}

机构：

[1] Univ Malta, Inst Space Sci & Astron, MSD-2080 Msida, Malta

[2] Univ Malta, Dept Phys, MSD-2080 Msida, Malta

[3] Natl Tech Univ Athens, Dept Phys, Zografou Campus, GR-15773 Athens, Greece

[4] Baylor Univ, Phys Dept, CASPER, Waco, TX 76798 USA

来源：

PHYSICAL REVIEW D | 2019年 / 100卷 / 04期

基金：

欧盟地平线“2020”;

关键词：

INFLATIONARY UNIVERSE; FLATNESS; HORIZON; ENERGY; TOOL;

D O I：

10.1103/PhysRevD.100.044008

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Symmetric teleparallel gravity (STG) offers an interesting avenue to formulate a theory of gravitation that relies neither on curvature nor torsion but only on nonmetricity Q. Given the growing number of confirmed observations of gravitational waves (GWs) and their use to explore gravitational theories, in this work we investigate the GWs in various extensions of STG, focusing on their speed and polarization. We explore the plethora of theories that this new framework opens up, that is, as general relativity can be modified, so can the symmetric teleparallel equivalent of general relativity (STEGR). In this work, we investigate the fate of GWs in the generalized irreducible decomposition of STEGR, generalizations of the STEGR Lagrangian, f(Q), a scalar field nonminimally coupled to the STEGR Lagrangian, and the general setup of f(Q, B) theory where B is the boundary term difference between the Ricci scalar and the STEGR Lagrangian. Coincidentally, f(Q, B) forms a more general theory than f(R) gravity since Q embodies the second-order elements of the Ricci scalar while B takes on its fourth-order boundary terms. Our work deals mainly with the resulting scalar-vector-tensor polarization modes of the plethora of STG theories, and how they effect their respective speeds of propagation.

引用

页数：15

共 67 条

[1] Observation of Gravitational Waves from a Binary Black Hole Merger [J].

Abbott, B. P. ;

Abbott, R. ;

Abbott, T. D. ;

Abernathy, M. R. ;

Acernese, F. ;

Ackley, K. ;

Adams, C. ;

Adams, T. ;

Addesso, P. ;

Adhikari, R. X. ;

Adya, V. B. ;

Affeldt, C. ;

Agathos, M. ;

Agatsuma, K. ;

Aggarwal, N. ;

Aguiar, O. D. ;

Aiello, L. ;

Ain, A. ;

Ajith, P. ;

Allen, B. ;

Allocca, A. ;

Altin, P. A. ;

Anderson, S. B. ;

Anderson, W. G. ;

Arai, K. ;

Arain, M. A. ;

Araya, M. C. ;

Arceneaux, C. C. ;

Areeda, J. S. ;

Arnaud, N. ;

Arun, K. G. ;

Ascenzi, S. ;

Ashton, G. ;

Ast, M. ;

Aston, S. M. ;

Astone, P. ;

Aufmuth, P. ;

Aulbert, C. ;

Babak, S. ;

Bacon, P. ;

Bader, M. K. M. ;

Baker, P. T. ;

Baldaccini, F. ;

Ballardin, G. ;

Ballmer, S. W. ;

Barayoga, J. C. ;

Barclay, S. E. ;

Barish, B. C. ;

Barker, D. ;

Barone, F. .

PHYSICAL REVIEW LETTERS, 2016, 116 (06)

[2] GW170814: A Three-Detector Observation of Gravitational Waves from a Binary Black Hole Coalescence [J].

Abbott, B. P. ;

Abbott, R. ;

Abbott, T. D. ;

Acernese, F. ;

Ackley, K. ;

Adams, C. ;

Adams, T. ;

Addesso, P. ;

Adhikari, R. X. ;

Adya, V. B. ;

Affeldt, C. ;

Afrough, M. ;

Agarwal, B. ;

Agathos, M. ;

Agatsuma, K. ;

Aggarwal, N. ;

Aguiar, O. D. ;

Aiello, L. ;

Ain, A. ;

Ajith, P. ;

Allen, B. ;

Allen, G. ;

Allocca, A. ;

Altin, P. A. ;

Amato, A. ;

Ananyeva, A. ;

Anderson, S. B. ;

Anderson, W. G. ;

Angelova, S. V. ;

Antier, S. ;

Appert, S. ;

Arai, K. ;

Araya, M. C. ;

Areeda, J. S. ;

Arnaud, N. ;

Arun, K. G. ;

Ascenzi, S. ;

Ashton, G. ;

Ast, M. ;

Aston, S. M. ;

Astone, P. ;

Atallah, D. V. ;

Aufmuth, P. ;

Aulbert, C. ;

AultONeal, K. ;

Austin, C. ;

Avila-Alvarez, A. ;

Babak, S. ;

Bacon, P. ;

Bader, M. K. M. .

PHYSICAL REVIEW LETTERS, 2017, 119 (14)

[3] Gravitational waves in modified teleparallel theories of gravity [J].

Abedi, Habib ;

Capozziello, Salvatore .

EUROPEAN PHYSICAL JOURNAL C, 2018, 78 (06)

[4]

Aghanim N., 2018, ARXIV180706209

[5]

Aldrovandi R., 2013, TELEPARALLEL GRAVITY

[6] Dynamics of scalar perturbations in f(R, T) gravity [J].

Alvarenga, F. G. ;

de la Cruz-Dombriz, A. ;

Houndjo, M. J. S. ;

Rodrigues, M. E. ;

Saez-Gomez, D. .

PHYSICAL REVIEW D, 2013, 87 (10)

[7] Gravitational waves in f(R, T) and f(R, Tφ) theories of gravity [J].

Alves, M. E. S. ;

Moraes, P. H. R. S. ;

de Araujo, J. C. N. ;

Malheiro, M. .

PHYSICAL REVIEW D, 2016, 94 (02)

[8] Probing the f(R) formalism through gravitational wave polarizations [J].

Alves, M. E. S. ;

Miranda, O. D. ;

de Araujo, J. C. N. .

PHYSICS LETTERS B, 2009, 679 (04) :401-406

[9]

[Anonymous], THEORY EXPT GRAVITAT

[10]

[Anonymous], 1987, ADV SER ASTROPHYS CO

← 1 2 3 4 5 6 7 →