Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Reina, Borja"'
Publikováno v:
Adv. Theor. Math. Phys. (2022) 26, 2719-2840
Existence and uniqueness of rotating fluid bodies in equilibrium is still poorly understood in General Relativity (GR). Apart from the limiting case of infinitely thin disks, the only known global results in the stationary rotating case (Heilig [14]
Externí odkaz:
http://arxiv.org/abs/2007.12552
Publikováno v:
Adv. Theor. Math. Phys. (2022) 26, 1873-1963
Perturbation theory in geometric theories of gravitation is a gauge theory of symmetric tensors defined on a Lorentzian manifold (the background spacetime). The gauge freedom makes uniqueness problems in perturbation theory particularly hard as one n
Externí odkaz:
http://arxiv.org/abs/2007.12548
In this work we study the problem of first order perturbations of a general hypersurface, i.e. with arbitrary causal character at each point. We extend the framework by Mars (Class. Quantum Grav. 22 3325 (2005)) where this problem was studied to seco
Externí odkaz:
http://arxiv.org/abs/1812.11603
We characterise the geometrical nature of smooth supertranslations defined on a generic non-expanding horizon (NEH) embedded in vacuum. To this end we consider the constraints imposed by the vacuum Einstein's equations on the NEH structure, and discu
Externí odkaz:
http://arxiv.org/abs/1707.02971
In a recent paper we applied a rigorous perturbed matching framework to show the amendment of the mass of rotating stars in Hartle's model. Here, we apply this framework to the tidal problem in binary systems. Our approach fully accounts for the corr
Externí odkaz:
http://arxiv.org/abs/1702.04568
The junction conditions for the most general gravitational theory with a Lagrangian containing terms quadratic in the curvature are derived. We include the cases with a possible concentration of matter on the joining hypersurface -termed as thin shel
Externí odkaz:
http://arxiv.org/abs/1510.05515
Autor:
Reina, Borja, Vera, Raül
We show how the correction to the calculation of the mass in the original relativistic model of a rotating star by Hartle [6], found recently [10], appears in the Newtonian limit, and that the correcting term is indeed present, albeit hidden, in the
Externí odkaz:
http://arxiv.org/abs/1508.01402
Autor:
Reina, Borja
Hartle's model for slowly rotating stars has been extensively used to compute equilibrium configurations of slowly rotating stars to second order in perturbation theory in General Relativity, given a barotropic equation of state (EOS). A recent study
Externí odkaz:
http://arxiv.org/abs/1503.07835
Autor:
Reina, Borja, Vera, Raül
Hartle's model provides the most widely used analytic framework to describe isolated compact bodies rotating slowly in equilibrium up to second order in perturbations in the context of General Relativity. Apart from some explicit assumptions, there a
Externí odkaz:
http://arxiv.org/abs/1412.7078
Autor:
Reina, Borja, Vera, Raül
Publikováno v:
Class.Quant.Grav.32:155008,2015
Hartle's model describes the equilibrium configuration of a rotating isolated compact body in perturbation theory up to second order in General Relativity. The interior of the body is a perfect fluid with a barotropic equation of state, no convective
Externí odkaz:
http://arxiv.org/abs/1412.7083