Gravitational waves in f(R,T) theories: polarization states and astrophysical sources

• Grant number: 15/08476-0
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Effective date (Start): July 01, 2015
• Effective date (End): January 10, 2020
• Field of knowledge: Physical Sciences and Mathematics - Astronomy
• Acordo de Cooperação: Coordination of Improvement of Higher Education Personnel (CAPES)
• Principal Investigator: Manuel Máximo Bastos Malheiro de Oliveira
• Grantee: Pedro Henrique Ribeiro da Silva Moraes
• Host Institution: Divisão de Ciências Fundamentais (IEF). Instituto Tecnológico de Aeronáutica (ITA). Ministério da Defesa (Brasil). São José dos Campos , SP, Brazil
• Associated research grant: 13/26258-4 - Superdense matter in the universe, AP.TEM
• Associated scholarship(s): 18/20689-7 - Gauss-Bonnet Stars, BE.EP.PD

Abstract

Although great efforts in the study of the composition and internal structure of compact stars have been made, the absolute ground state of matter still is an open question. The analysis of matter at high densities in the universe has as one of its fronts the characterization of gravitational waves emitted by binary systems with compact objects. The objective of this work is to characterize the polarization states of gravitational waves in f(R,T) Theory, in which the gravitational part of the action depends on a generic function of R, the Ricci scalar, and T, the trace of the energy-momentum tensor. Such a characterization, apart from contributing to the study of matter at high densities, can be corroborated by experiments like Advanced LIGO, which will soon come into operation. Furthermore, still in the scope of f(R,T) Theories, we propose to obtain the Tolman-Oppenheimer-Volkoff Equations, as well as their solutions, in such a way we can identify relevant physical quantities in the study of superdense matter in the universe. (AU)

Scientific publications

(35)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

ALVES, M. E. S.; MORAES, P. H. R. S.; DE ARAUJO, J. C. N.; MALHEIRO, M.. Gravitational waves in f(R, T) and f(R, T-phi) theories of gravity. Physical Review D, v. 94, n. 2, JUL 14 2016. (15/08476-0, 13/26258-4)

MORAES, P. H. R. S.. Cosmic acceleration from varying masses in five dimensions. INTERNATIONAL JOURNAL OF MODERN PHYSICS D, v. 25, n. 1, JAN 2016. (15/08476-0)

LAPOLA, M. M.; MORAES, P. H. R. S.; DE PAULA, W.; JESUS, J. F.; VALENTIM, R.; MALHEIRO, M.. Induced equation of state for the universe epochs constrained by the hubble parameter. CHINESE JOURNAL OF PHYSICS, v. 72, p. 159-175, AUG 2021. (16/09831-0, 15/08476-0, 18/20689-7, 17/05859-0)

SAHOO, PARBATI; MORAES, P. H. R. S.; LAPOLA, MARCELO M.; SAHOO, P. K.. Traversable wormholes in the traceless f(R,T) gravity. INTERNATIONAL JOURNAL OF MODERN PHYSICS D, v. 30, n. 13, OCT 1 2021. (15/08476-0)

MORAES, P. H. R. S.; SAHOO, P. K.; RIBEIRO, G.; CORREA, R. A. C.. A Cosmological Scenario from the Starobinsky Model within the f(R,T) Formalism. ADVANCES IN ASTRONOMY, v. 2019, 2019. (15/08476-0, 16/03276-5, 17/26646-5)

CHINAGLIA, M.; CRUZ, W. T.; CORREA, R. A. C.; DE PAULA, W.; MORAES, P. H. R. S.. Configurational entropy as a tool to select a physical thick brane model. Physics Letters B, v. 779, p. 16-23, APR 10 2018. (15/08476-0, 16/03276-5)

HARKO, TIBERIU; MORAES, PEDRO H. R. S.. Comment on ``Reexamining f (R, T) gravity{''}. Physical Review D, v. 101, n. 10, MAY 28 2020. (15/08476-0, 13/26258-4)

CARVALHO, G. A.; MORAES, P. H. R. S.; DOS SANTOS JR, I, S.; GONCALVES, B. S.; MALHEIRO, M.. Hydrostatic equilibrium configurations of neutron stars in a non-minimal geometry-matter coupling theory of gravity. EUROPEAN PHYSICAL JOURNAL C, v. 80, n. 5, MAY 29 2020. (15/08476-0, 18/20689-7, 13/26258-4)

CORREA, R. A. C.; MORAES, P. H. R. S.; DE SOUZA DUTRA, A.; SANTOS, J. R. L.; DE PAULA, W.. Cosmological scenarios from multiquintessence. EUROPEAN PHYSICAL JOURNAL C, v. 78, n. 11, OCT 30 2018. (17/26646-5, 16/03276-5, 15/08476-0)

MORAES, P. H. R. S.; SAHOO, P. K.. Wormholes in exponential f(R, T) gravity. EUROPEAN PHYSICAL JOURNAL C, v. 79, n. 8, AUG 13 2019. (15/08476-0, 18/20689-7)

SAHOO, P. K.; MORAES, P. H. R. S.; SAHOO, PARBATI; RIBEIRO, G.. Phantom fluid supporting traversable wormholes in alternative gravity with extra material terms. INTERNATIONAL JOURNAL OF MODERN PHYSICS D, v. 27, n. 16, DEC 2018. (15/08476-0)

CARVALHO, G. A.; LOBATO, R. V.; MORAES, P. H. R. S.; ARBANIL, JOSE D. V.; OTONIEL, E.; MARINHO, JR., R. M.; MALHEIRO, M.. Stellar equilibrium configurations of white dwarfs in the f (R, T) gravity. EUROPEAN PHYSICAL JOURNAL C, v. 77, n. 12, DEC 15 2017. (15/08476-0, 13/26258-4)

COUCEIRO CORREA, RAFAEL AUGUSTO; DANTAS, DAVI MONTEIRO; RIBEIRO DA SILVA MORAES, PEDRO HENRIQUE; DUTRA, ALVARO DE SOUZA; SANTOS DE ALMEIDA, CARLOS ALBERTO. Refinements of the Weyl Pure Geometrical Thick Branes From Information-Entropic Measure. Annalen der Physik, v. 530, n. 7, JUL 2018. (15/08476-0, 16/03276-5)

LOBATO, RONALDO V.; CARVALHO, G. A.; MARTINS, A. G.; MORAES, P. H. R. S.. Energy nonconservation as a link between f(R,T) gravity and noncommutative quantum theory. EUROPEAN PHYSICAL JOURNAL PLUS, v. 134, n. 4, APR 2019. (15/08476-0)

MORAES, P. H. R. S.; CORREA, R. A. C.. The Importance of Scalar Fields as Extradimensional Metric Components in Kaluza-Klein Models. ADVANCES IN ASTRONOMY, v. 2019, 2019. (17/26646-5, 16/03276-5, 15/08476-0)

SAHOO, P. K.; MORAES, P. H. R. S.; SAHOO, PARBATI. Wormholes in R-2-gravity within the f (R, T) formalism. EUROPEAN PHYSICAL JOURNAL C, v. 78, n. 1, JAN 19 2018. (15/08476-0)

MORAES, P. H. R. S.; SAHOO, P. K.. Nonexotic matter wormholes in a trace of the energy-momentum tensor squared gravity. Physical Review D, v. 97, n. 2, JAN 8 2018. (15/08476-0)

MORAES, P. H. R. S.; CORREA, R. A. S.; LOBATO, R. V.. Analytical general solutions for static wormholes in f (R, T) gravity. Journal of Cosmology and Astroparticle Physics, n. 7, JUL 2017. (15/08476-0, 16/03276-5)

MORAES, P. H. R. S.; SAHOO, P. K.. The simplest non-minimal matter-geometry coupling in the f (R, T) cosmology. EUROPEAN PHYSICAL JOURNAL C, v. 77, n. 7, JUL 18 2017. (15/08476-0)

MORAES, P. H. R. S.; SANTOS, J. R. L.. A complete cosmological scenario from f(R, T-phi) gravity theory. EUROPEAN PHYSICAL JOURNAL C, v. 76, n. 2, FEB 4 2016. (15/08476-0)

MORAES, P. H. R. S.; CORREA, R. A. C.. Braneworld cosmology in f (R, T) gravity. ASTROPHYSICS AND SPACE SCIENCE, v. 361, n. 3, MAR 2016. (15/08476-0)

MORAES, P. H. R. S.; ARBANIL, JOSE D. V.; MALHEIRO, M.. Stellar equilibrium configurations of compact stars in f (R, T) theory of gravity. Journal of Cosmology and Astroparticle Physics, n. 6, JUN 2016. (15/08476-0)

MORAES, P. H. R. S.; SAHOO, P. K.. Modeling wormholes in f (R,T) gravity. Physical Review D, v. 96, n. 4, AUG 28 2017. (15/08476-0)

SANTOS, J. R. L.; MORAES, P. H. R. S.; FERREIRA, D. A.; VILAR NETA, D. C.. Building analytical three-field cosmological models. EUROPEAN PHYSICAL JOURNAL C, v. 78, n. 2, FEB 26 2018. (15/08476-0)

CORREA, R. A. C.; MORAES, P. H. R. S.; DE SOUZA DUTRA, A.; DE PAULA, W.; FREDERICO, T.. Configurational entropy as a constraint for Gauss-Bonnet braneworld models. Physical Review D, v. 94, n. 8, OCT 6 2016. (15/08476-0)

MOMENI, D.; MORAES, P. H. R. S.; MYRZAKULOV, R.. Generalized second law of thermodynamics in f (R, T) theory of gravity. ASTROPHYSICS AND SPACE SCIENCE, v. 361, n. 7, JUL 2016. (15/08476-0)

MORAES, P. H. R. S.; RIBEIRO, G.; CORREA, R. A. C.. A transition from a decelerated to an accelerated phase of the universe expansion from the simplest non-trivial polynomial function of T in the f (R, T) formalism. ASTROPHYSICS AND SPACE SCIENCE, v. 361, n. 7, JUL 2016. (15/08476-0)

SANTOS, J. R. L.; MORAES, P. H. R. S.. Cosmology from a running vacuum model driven by a scalar field. INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS, v. 17, n. 1, JAN 2020. (15/08476-0)

DOS SANTOS, S. I.; CARVALHO, G. A.; MORAES, P. H. R. S.; LENZI, C. H.; MALHEIRO, M.. A conservative energy-momentum tensor in the f(R,T) gravity and its implications for the phenomenology of neutron stars. EUROPEAN PHYSICAL JOURNAL PLUS, v. 134, n. 8, AUG 2019. (15/08476-0, 13/26258-4, 18/20689-7)

MORAES, P. H. R. S.; DE PAULA, W.; CORREA, R. A. C.. Charged wormholes in f (R, T)-extended theory of gravity. INTERNATIONAL JOURNAL OF MODERN PHYSICS D, v. 28, n. 8, JUN 2019. (15/08476-0, 16/03276-5, 17/26646-5)

DEB, DEBABRATA; KETOV, SERGEI V.; MAURYA, S. K.; KHLOPOV, MAXIM; MORAES, P. H. R. S.; RAY, SAIBAL. Exploring physical features of anisotropic strange stars beyond standard maximum mass limit in f (R, T) gravity. Monthly Notices of the Royal Astronomical Society, v. 485, n. 4, p. 5652-5665, JUN 2019. (15/08476-0)

MORAES, P. H. R. S.; SAHOO, P. K.; TAORI, BARKHA; SAHOO, PARBATI. Phantom energy-dominated universe as a transient stage in f(R) cosmology. INTERNATIONAL JOURNAL OF MODERN PHYSICS D, v. 28, n. 10, JUL 2019. (15/08476-0)

MORAES, P. H. R. S.. The trace of the trace of the energy-momentum tensor-dependent Einstein's field equations. EUROPEAN PHYSICAL JOURNAL C, v. 79, n. 8, AUG 13 2019. (13/26258-4, 15/08476-0, 18/20689-7)

MORAES, P. H. R. S.; CORREA, R. A. C.; RIBEIRO, G.. Evading the non-continuity equation in the f (R, T) cosmology. EUROPEAN PHYSICAL JOURNAL C, v. 78, n. 3, MAR 7 2018. (15/08476-0)

SAHOO, P. K.; MORAES, P. H. R. S.; SAHOO, PARBATI; BISHI, BINAYA K.. f (R, T) = f (R) plus lambda T gravity models as alternatives to cosmic acceleration. EUROPEAN PHYSICAL JOURNAL C, v. 78, n. 9, SEP 15 2018. (15/08476-0)