Zobrazeno 1 - 10
of 84
pro vyhledávání: '"H. Yavartanoo"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 2, Pp 1-36 (2024)
Abstract We study pure D dimensional Einstein gravity in spacetimes with a generic null boundary. We focus on the symplectic form of the solution phase space which comprises a 2D dimensional boundary part and a 2(D(D − 3)/2 + 1) dimensional bulk pa
Externí odkaz:
https://doaj.org/article/8fdd9de4ce234235817aed6dd81c84c5
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 7, Pp 1-42 (2023)
Abstract We study 3-dimensional gravity on a spacetime bounded by a generic 2-dimensional causal surface. We review the solution phase space specified by 4 generic functions over the causal boundary, construct the symplectic form over the solution sp
Externí odkaz:
https://doaj.org/article/a5b52a1e306c4eea9adc40d5677cc2a6
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 5, Pp 1-27 (2022)
Abstract We study 2d and 3d gravity theories on spacetimes with causal (timelike or null) codimension one boundaries while allowing for variations in the position of the boundary. We construct the corresponding solution phase space and specify bounda
Externí odkaz:
https://doaj.org/article/7cd6f9475b46411582d0057496a6d6c0
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 11, Pp 1-39 (2021)
Abstract We construct the boundary phase space in D-dimensional Einstein gravity with a generic given co-dimension one null surface N $$ \mathcal{N} $$ as the boundary. The associated boundary symmetry algebra is a semi-direct sum of diffeomorphisms
Externí odkaz:
https://doaj.org/article/852e1eb515dc41cf892423012f0eb92b
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 5, Pp 1-41 (2021)
Abstract We study surface charges on a generic null boundary in three dimensional topological massive gravity (TMG). We construct the solution phase space which involves four independent functions over the two dimensional null boundary. One of these
Externí odkaz:
https://doaj.org/article/7b5132a2e7c244218ddb817b6defb10d
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 10, Pp 1-37 (2020)
Abstract We carry out in full generality and without fixing specific boundary conditions, the symmetry and charge analysis near a generic null surface for two and three dimensional (2d and 3d) gravity theories. In 2d and 3d there are respectively two
Externí odkaz:
https://doaj.org/article/7d18daf7d2c742a3a2d49588746b8528
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 3, Pp 1-26 (2019)
Abstract Prompted by the recent developments in integrable single trace T T ¯ $$ T\overline{T} $$ and J T ¯ $$ J\overline{T} $$ deformations of 2d CFTs, we analyse such deformations in the context of AdS3/CFT2 from the dual string worldsheet CFT vi
Externí odkaz:
https://doaj.org/article/adbb9072ddc946659804ce6957527739
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 6, Pp 1-31 (2018)
Abstract Yang-Baxter string sigma-models provide a systematic way to deform coset geometries, such as AdS p × S p , while retaining the σ-model integrability. It has been shown that the Yang-Baxter deformation in target space is simply an open-clos
Externí odkaz:
https://doaj.org/article/a0914aa56d6c4841a0eb8d8684809f2f
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 8, Pp 1-51 (2017)
Abstract According to the horizon fluff proposal microstates of a generic black hole belong to a certain subset of near horizon soft hairs that cannot be extended beyond the near horizon region. In [1, 2] it was shown how the horizon fluff proposal w
Externí odkaz:
https://doaj.org/article/edd546c8767d4431a63594597aa0241a
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 7, Pp 1-22 (2017)
Abstract The Ryu-Takayanagi prescription reduces the problem of calculating entanglement entropy in CFTs to the determination of minimal surfaces in a dual anti-de Sitter geometry. For 3D gravity theories and BTZ black holes, we identify the minimal
Externí odkaz:
https://doaj.org/article/318d070ec783437294b999e672116d85