Zobrazeno 1 - 10
of 110
pro vyhledávání: '"Petropoulos, P. Marios"'
The Carrollian fluid equations arise as the $c \to 0$ limit of the relativistic fluid equations and have recently experienced a surge of activity in the flat-space holography community. However, the rigorous mathematical well-posedness theory for the
Externí odkaz:
http://arxiv.org/abs/2407.05972
The Carrollian fluid equations arise from the equations for relativistic fluids in the limit as the speed of light vanishes, and have recently experienced a surge of interest in the theoretical physics community in the context of asymptotic symmetrie
Externí odkaz:
http://arxiv.org/abs/2407.05971
Galilean and Carrollian algebras acting on two-dimensional Newton-Cartan and Carrollian manifolds are isomorphic. A consequence of this property is a duality correspondence between one-dimensional Galilean and Carrollian fluids. We describe the dynam
Externí odkaz:
http://arxiv.org/abs/2407.05962
Autor:
Miskovic, Olivera, Olea, Rodrigo, Petropoulos, P. Marios, Rivera-Betancour, David, Siampos, Konstantinos
Publikováno v:
JHEP12(2023)130
In three-dimensional pseudo-Riemannian manifolds, the Cotton tensor arises as the variation of the gravitational Chern-Simons action with respect to the metric. It is Weyl-covariant, symmetric, traceless and covariantly conserved. Performing a reduct
Externí odkaz:
http://arxiv.org/abs/2310.19929
Autor:
Campoleoni, Andrea, Delfante, Arnaud, Pekar, Simon, Petropoulos, P. Marios, Rivera-Betancour, David, Vilatte, Matthieu
Publikováno v:
JHEP12(2023)078
Ricci-flat solutions to Einstein's equations in four dimensions are obtained as the flat limit of Einstein spacetimes with negative cosmological constant. In the limiting process, the anti-de Sitter energy--momentum tensor is expanded in Laurent seri
Externí odkaz:
http://arxiv.org/abs/2309.15182
Publikováno v:
JHEP07 (2023) 065
We unravel the boundary manifestation of Ehlers' hidden M\"obius symmetry present in four-dimensional Ricci-flat spacetimes that enjoy a time-like isometry and are Petrov-algebraic. This is achieved in a designated gauge, shaped in the spirit of flat
Externí odkaz:
http://arxiv.org/abs/2212.14062
Autor:
Campoleoni, Andrea, Ciambelli, Luca, Delfante, Arnaud, Marteau, Charles, Petropoulos, P. Marios, Ruzziconi, Romain
Relaxing the Bondi gauge, the solution space of three-dimensional gravity in the metric formulation has been shown to contain an additional free function that promotes the boundary metric to a Lorentz or Carroll frame, in asymptotically AdS or flat s
Externí odkaz:
http://arxiv.org/abs/2208.07575
Autor:
Petkou, Anastasios C., Petropoulos, P. Marios, Betancour, David Rivera, Siampos, Konstantinos
Publikováno v:
JHEP09(2022)162
We comprehensively study Galilean and Carrollian hydrodynamics on arbitrary backgrounds, in the presence of a matter/charge conserved current. For this purpose, we follow two distinct and complementary paths. The first is based on local invariance, b
Externí odkaz:
http://arxiv.org/abs/2205.09142
In three-dimensional gravity, we discuss the relation between the Fefferman--Graham gauge, the Bondi gauge and the Eddington--Finkelstein type of gauge, often referred to as the derivative expansion, involved in the fluid/gravity correspondence. Star
Externí odkaz:
http://arxiv.org/abs/2006.10083
Solutions to Einstein's vacuum equations in three dimensions are locally maximally symmetric. They are distinguished by their global properties and their investigation often requires a choice of gauge. Although analyses of this sort have been perform
Externí odkaz:
http://arxiv.org/abs/2006.10082