Dark matter effects in modified teleparallel gravity

Abstract

This work investigates dark matter (DM) effects in compact objects in modified teleparallel gravity (MTG) in which a modification of Teleparallel Equivalent to General Relativity is used. We applied a tetrad to the modified field equations where a set of relations is found. The conservation equation allows us to rewrite our Tolman-Oppenheimer-Volkoff equations with an effective gravitational coupling constant. As input to these new equations, we use a relativistic mean-field (RMF) model with dark matter content included, obtained from a Lagrangian density with both, hadronic and dark particle degrees of freedom, as well as the Higgs boson, used as a mediator in both sectors of the theory. Through numerical calculations, we analyze the mass-radius diagrams obtained from different parametrizations of the RMF-DM model, generated by assuming different values of the dark particle Fermi momentum and running the free parameter coming from the MTG. Our results show that it is possible for the system simultaneously support more DM content, and be compatible with recent astrophysical data provided by LIGO and Virgo Collaboration, as well as by NASA's Neutron star Interior Composition Explorer (NICER).

8 pages, 2 figures

References in corpus (23)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• GW190814: Gravitational Waves from the Coalescence of a 23 M${}_{\odot }$ Black Hole with a 2.6 M${}_{\odot }$ Compact Object
• PSR J0030+0451 Mass and Radius from NICER Data and Implications for the Properties of Neutron Star Matter
• A NICER View of PSR J0030+0451: Millisecond Pulsar Parameter Estimation
• Dark Matter Candidates from Particle Physics and Methods of Detection
• PSR J0952-0607: The Fastest and Heaviest Known Galactic Neutron Star
• Relativistic Mean-Field Hadronic Models under Nuclear Matter Constraints
• Comparing Equivalent Gravities: common features and differences
• The dark matter effect on realistic equation of state in neutron stars
• LOFAR discovery of the fastest-spinning millisecond pulsar in the Galactic field
• Dark matter admixed neutron star as a possible compact component in the GW190814 merger event
• The effects of self-interacting bosonic dark matter on neutron star properties
• Dark matter effects on tidal deformabilities and moment of inertia in a hadronic model with short-range correlations
• Dark Matter Effects on the Compact Star Properties
• Early and late time cosmology: the $f(R)$ gravity perspective
• Low-energy nuclear physics and global neutron star properties
• Dark matter component in hadronic models with short-range correlations
• Dark particle mass effects on neutron star properties from a short-range correlated hadronic model
• Thermal Relaxation of Dark Matter Admixed Neutron Star
• Lorentz gauge-invariant variables in torsion-based theories of gravity
• Gravitational wave birefringence in spatially curved teleparallel cosmology
• Neutron Stars in Modified Teleparallel Gravity
• On the stability of scale-invariant black holes

Cited by in corpus (2)

• Bosonic Dark Matter in Light of the NICER Precise Mass-Radius Measurements
• Static spherically symmetric solutions in New General Relativity