Work

Gravitational waves emission in quadratic gravity: Longitudinal modes, angular momentum emission, and positivity of the radiated power

Year: 2025

Type: article

Abstract: In this paper, the emission of gravitational waves in quadratic gravity theory is examined. The wave equations for massless and massive perturbations are derived, followed by the calculation of the energy and angular momentum radiated. In the quadrupole approximation, and taking into account only the transverse-traceless modes, it is shown that the theory avoids the issues generated by the Ostrogradsky instabilities and achieves positive energy and angular momentum emissions. As an example, a rotating ellipsoid with free precession is analyzed, and the effects of the massive perturbations on its rotation are highlighted.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/physrevd.111.084055

Authors: Matheus F. S. Alves, R. R. Cuzinatto, C. A. M. de Melo, L. G. Medeiros, P. J. Pompeia

Institutions: Universidade Federal do Espírito Santo, Universidade Federal de Alfenas, Universidade Federal do Rio Grande do Norte, Instituto Tecnológico de Aeronáutica

Language: English

Topic: Pulsars and Gravitational Waves Research

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Fundação de Amparo à Pesquisa do Estado de São Paulo, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Fundação de Amparo à Pesquisa do Estado de Minas Gerais, Fundação de Amparo à Pesquisa e Inovação do Espírito Santo

Awards: G2343622164, AVANÇO DA PESQUISA E PÓS-GRADUAÇÃO NA UNIFAL-MG ATRAVÉS DA CRIAÇÃO DE REDES DE COLABORAÇÃO INTERNACIONAIS, G5085867039, FORTALECIMENTO DA INTERNACIONALIZAÇÃO ATRAVÉS DE REDES DE COLABORAÇÃO INTERNACIONAIS NA PESQUISA E PÓS-GRADUAÇÃO DA UNIFAL-MG, G5611636192