Zobrazeno 1 - 10
of 83
pro vyhledávání: '"Ilijić, Saša"'
Autor:
Ilijic, Sasa, DeBenedictis, Andrew
Within the paradigm of non-perturbative Einstein gravity we study continuous manifolds which possess de Sitter interiors and Kerr exteriors. These manifolds could represent the spacetime of rotating gravastars or other similar black hole mimickers. T
Externí odkaz:
http://arxiv.org/abs/2309.00551
Publikováno v:
Phys. Rev. D 105, 084020 (2022)
In this paper we study properties that the vacuum must possess in the minimal extension to the teleparallel equivalent of general relativity (TEGR) where the action is supplemented with a quadratic torsion term. No assumption is made about the weakne
Externí odkaz:
http://arxiv.org/abs/2202.08958
Autor:
Ilijić, Saša, Sossich, Marko
Publikováno v:
Phys. Rev. D 102, 084019 (2020)
Spherically symmetric configurations of the non-interacting massive complex scalar field, representing non-rotating boson stars, are considered within the framework of the modified torsion based $f(T)$ gravity, with $f(T) = T + \alpha \, T^2/2$. We f
Externí odkaz:
http://arxiv.org/abs/2007.12451
Autor:
DeBenedictis, Andrew, Ilijic, Sasa
Publikováno v:
Class. Quantum Grav. 35 215001 (2018)
In this paper we study the so called "warp drive" spacetimes within the $U_{4}$ Riemann-Cartan manifolds of Einstein-Cartan theory. Specifically, the role that spin may play with respect to energy condition violation is considered. It turns out that
Externí odkaz:
http://arxiv.org/abs/1807.09745
Autor:
Ilijic, Sasa, Sossich, Marko
Publikováno v:
Phys. Rev. D 98, 064047 (2018)
We consider static spherically symmetric self-gravitating configurations of the perfect fluid within the framework of the torsion-based extended theory of gravity. In particular, we use the covariant formulation of $f(T)$ gravity with $f(T) = T + \fr
Externí odkaz:
http://arxiv.org/abs/1807.03068
Autor:
DeBenedictis, Andrew, Ilijic, Sasa
Publikováno v:
Phys. Rev. D 98, 064056 (2018)
We consider extended covariant teleparallel $(f(T))$ gravity whose action is analytic in the torsion scalar and which is sourced by an $su(2)$ valued Yang-Mills field. Specifically, we search for regular solutions to the coupled $f(T)$ Yang-Mills sys
Externí odkaz:
http://arxiv.org/abs/1806.11445
Autor:
DeBenedictis, Andrew, Ilijic, Sasa
Publikováno v:
Phys. Rev. D 94, 124025 (2016)
Recently, a fully covariant version of the theory of $F(T)$ torsion gravity has been introduced (arXiv:1510.08432v2 [gr-qc]). In covariant $F(T)$ gravity the Schwarzschild solution is not a vacuum solution for $F(T)\neq T$ and therefore determining t
Externí odkaz:
http://arxiv.org/abs/1609.07465
Autor:
Huffel, Helmuth, Ilijic, Sasa
Publikováno v:
Phys. Rev. E 94, 052115 (2016)
We propose a novel type of ergostats and thermostats for molecular dynamics simulations. A general class of active particle swarm models is considered, where any specific total energy (alternatively any specific temperature) can be provided at a fixe
Externí odkaz:
http://arxiv.org/abs/1512.08459
Publikováno v:
Phys. Rev. D 92, 024045 (2015)
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, s
Externí odkaz:
http://arxiv.org/abs/1503.02480
Publikováno v:
Class. Quantum Grav. 32 (2015) 035023
We study the nonminimally coupled complex scalar field within the framework of teleparallel gravity. Coupling of the field nonminimally to the torsion scalar destroys the Lorentz invariance of the theory in the sense that the resulting equations of m
Externí odkaz:
http://arxiv.org/abs/1407.2067