Gravitational waves at the first post-Newtonian order with the Weyssenhoff fluid in Einstein–Cartan theory

The generation of gravitational waves from a post-Newtonian source endowed with a quantum spin, modeled by the Weyssenhoff fluid, is investigated in the context of Einstein–Cartan theory at the first post-Newtonian level by resorting to the Blanchet–Damour formalism. After having worked out the basi...

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Published inThe European physical journal. C, Particles and fields Vol. 82; no. 7; pp. 628 - 24
Main Authors Battista, Emmanuele, De Falco, Vittorio
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.07.2022
Springer
Springer Nature B.V
SpringerOpen
Subjects
Analysis
Approximation
Astronomy
Astrophysics and Cosmology
Binary stars
Elementary Particles
Fluid dynamics
Fluid mechanics
Gravitational waves
Hadrons
Heavy Ions
Measurement Science and Instrumentation
Neutron stars
Nuclear Energy
Nuclear Physics
Ordinary differential equations
Parameter estimation
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Regular - Theoretical Physics
Regular Article - Theoretical Physics
Spacetime
Stellar systems
String Theory
Theory of relativity
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Summary:The generation of gravitational waves from a post-Newtonian source endowed with a quantum spin, modeled by the Weyssenhoff fluid, is investigated in the context of Einstein–Cartan theory at the first post-Newtonian level by resorting to the Blanchet–Damour formalism. After having worked out the basic principles of the hydrodynamics in Einstein–Cartan framework, we study the Weyssenhoff fluid within the post-Newtonian approximation scheme. The complexity of the underlying dynamical equations suggests to employ a discrete description via the point-particle limit, a procedure which permits the analysis of inspiralling spinning compact binaries. We then provide a first application of our results by considering binary neutron star systems.
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ISSN:1434-6044
1434-6052
1434-6052
DOI:10.1140/epjc/s10052-022-10558-9