Note on the charged boson stars with torsion-coupled field

Abstract

Within the framework of the extended teleparallel gravity, a new class of boson stars has recently been constructed by introducing the nonminimal coupling of the scalar field to the torsion scalar. An interesting feature of these static, spherical, self-gravitating configurations of the massive complex scalar field is their central region with outwardly increasing energy density, surrounded by a thick shell within which the joining with the usual asymptotically Schwarzschild tail takes place. In this work we extend the original model with the $U(1)$ gauge field and we find that the combined effect of the charge and coupling of the field to torsion leads to a significant increase of the maximal mass and the particle number that can be supported against gravity. We also show that some charged configurations preserve the property of having the outwardly increasing energy density over the central region, regardless of the fact that charging the configurations affects the anisotropy of the pressures in the opposite way relative to that of the field-to-torsion coupling terms.

11 pages, 2 figures, v2: appendix added, matches published version

References in corpus (10)

• Dynamical Boson Stars
• The teleparallel equivalent of general relativity
• Generalizations of teleparallel gravity and local Lorentz symmetry
• Good and bad tetrads in f(T) gravity
• Nonminimal torsion-matter coupling extension of f(T) gravity
• Dynamical features of scalar-torsion theories
• Self-Gravitating Spherically Symmetric Solutions in Scalar-Torsion Theories
• Nonminimally coupled scalar field in teleparallel gravity: boson stars
• Dark energy-like stars from nonminimally coupled scalar field
• Formation of photon spheres in boson stars with a nonminimally coupled field

Cited by in corpus (11)

• Dynamical Boson Stars
• Teleparallel Gravity: From Theory to Cosmology
• The Spherically Symmetric Vacuum in Covariant $F(T)=T+\frac{\alpha }{2}{T}^2+\mathcal{O}(T^{\gamma })$ Gravity Theory
• Onset of acceleration in a Universe initially filled by dark and baryonic matters in nonminimally coupled teleparallel model
• On spherically symmetric vacuum solutions and horizons in covariant $f(T)$ gravity theory
• Junction Conditions for F(T) Gravity from a Variational Principle
• Interacting Quintessence in a New Scalar-Torsion Gravity
• Regular solutions in $f(T)$-Yang-Mills theory
• White Dwarf Envelops and Temperature Corrections in Exponential $f(T)$ Gravity
• An analysis of Born-Infeld boson compact objects
• Intrinsic pressure anisotropy in spherical Proca stars