Non-singular T-K axion stars with/without the dynamical bosonic field in the presence of negative $\Lambda$ term

Abstract

In the present work authors derive exact solutions for the relativistic compact stars in the presence of two fields axion (Dante's Inferno model) and with/without the complex scalar field (with the quartic self-interaction) coupled to gravity. The matter source is assumed as the perfect fluid one, and we also use barotropic/MIT bag EoS to derive energy density and anisotropic/isotropic pressures from Einstein Field Equations (EFE's). For simplicity, as the metric potentials we use Tolman-Kuchowicz metric potentials, which are non-singular and physically acceptable. Unknown variables for the T-K metric potentials were derived from the junction conditions. To examine the redshift function, adiabatic index and energy, causality conditions we used such compact stars as PSR J1416-223, PSR J1903+32, 4U 1820-30, Cen X-3, EXO 1785-248, SAX J1808.4365.

arXiv comment19 pages, 10 figures

References in corpus (27)

• Shapiro delay measurement of a two solar mass neutron star
• Decoupling gravitational sources in general relativity: from perfect to anisotropic fluids
• Refined Neutron-Star Mass Determinations for Six Eclipsing X-Ray Pulsar Binaries
• The Mass and Radius of the Neutron Star in 4U 1820-30
• Anisotropic solutions by gravitational decoupling
• On the nature and evolution of the unique binary pulsar J1903+0327
• The Mass and Radius of the Neutron Star in EXO 1745-248
• Compact stars in $f(R,T)$ gravity
• Role of pressure anisotropy on relativistic compact stars
• Brane-world stars with solid crust and vacuum exterior
• Anisotropic fluid spheres of embedding class one using Karmarkar condition
• Optical spectroscopy and photometry of SAX J1808.4-3658 in outburst
• Anisotropic strange star with Tolman-Kuchowicz metric under $f(R,T)$ gravity
• Dante's Inferno
• Tolman-Oppenheimer-Volkoff equations in presence of the Chaplygin gas: stars and wormhole-like solutions
• A simple method to generate exact physically acceptable anisotropic solutions in general relativity
• Effects of $f(\mathcal{R},\mathcal{T},{\mathcal{R}}_{\gamma \upsilon }{\mathcal{T}}^{\gamma \upsilon })$ Gravity on Anisotropic Charged Compact Structures
• Charged strange star in $f(R,T)$ gravity with linear equation of state
• Confined-exotic-matter wormholes with no gluing effects -- Imaging supermassive wormholes and black holes
• Axionic black branes with conformal coupling
• Finch-Skea star model in f(R, T ) theory of gravity
• Phantom fluid wormhole in $f(R,T)$ gravity
• Compact Objects by Gravitational Decoupling in f(R) Gravity
• The bizarre anti-de Sitter spacetime
• Analysis of scalar and fermion quantum field theory on anti-de Sitter space-time
• Mathematical Modeling of Boson-Fermion Stars in the Generalized Scalar-Tensor Theories of Gravity
• Analytical Stellar Models of Neutron Stars in Teleparallel Gravity

Cited by in corpus (1)

• Physical Characteristics and Maximum Allowable Mass of Hybrid Star in the Context of $f(Q)$ Gravity