Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Amitabh Virmani"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 11, Pp 1-22 (2024)
Abstract The 4D-5D connection allows us to view the same near horizon geometry as part of a 4D black hole or a 5D black hole. A much studied example of this phenomenon is the BMPV black hole uplifted to 6D with flat base space versus Taub-NUT base sp
Externí odkaz:
https://doaj.org/article/fd64d98d44264dcabba439d838d82e99
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 4, Pp 1-21 (2024)
Abstract Supersymmetric elementary string states in the compactified heterotic string theory are described by small black holes that have zero area event horizon. In this paper we compute the supersymmetric index of such elementary string states usin
Externí odkaz:
https://doaj.org/article/88a4fcc6afd94254a9e0f8a6add85e23
Autor:
Subramanya Hegde, Amitabh Virmani
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 2, Pp 1-26 (2024)
Abstract In a recent paper [arXiv:2308.00038], Anupam, Chowdhury, and Sen conjectured that the finite temperature Euclidean five-dimensional Cvetic-Youm solution saturating the BPS bound is supersymmetric. In this paper, we explicitly construct Killi
Externí odkaz:
https://doaj.org/article/bfa3e612ce76449f8197dc00363474aa
Autor:
Madhu Mishra, Amitabh Virmani
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 6, Pp 1-33 (2022)
Abstract We develop the thermodynamics of BPS and near-BPS AdS6 black holes. We study the phase diagram of BPS black holes in the grand canonical ensemble. We highlight two distinct deformations orthogonal to the BPS surface: (i) increasing the tempe
Externí odkaz:
https://doaj.org/article/8d17239060a14bc3a447278a5c7d7e2b
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 2, Pp 1-42 (2022)
Abstract We propose a definition of asymptotic flatness at timelike infinity in four spacetime dimensions. We present a detailed study of the asymptotic equations of motion and the action of supertranslations on asymptotic fields. We show that the Le
Externí odkaz:
https://doaj.org/article/ee5dcf382ea945c29cd676051caf088f
Publikováno v:
Nuclear Physics B, Vol 987, Iss , Pp 116095- (2023)
Black holes carry more information about the microstates than just the total degeneracy. As a concrete example, the ZN-twined helicity trace indices for 14-BPS black holes of the CHL models allow extracting information about the distribution of the Z
Externí odkaz:
https://doaj.org/article/7555021438024e9bbdb20292f9c606b4
Autor:
Subhroneel Chakrabarti, Suresh Govindarajan, P. Shanmugapriya, Yogesh K. Srivastava, Amitabh Virmani
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 2, Pp 1-57 (2021)
Abstract Although BMPV black holes in flat space and in Taub-NUT space have identical near-horizon geometries, they have different indices from the microscopic analysis. For K3 compactification of type IIB theory, Sen et al. in a series of papers ide
Externí odkaz:
https://doaj.org/article/7fbbf4889e6340cd97c8c07ae98ccd10
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 10, Pp 1-33 (2019)
Abstract We revisit the study of the probe scalar quasinormal modes of a class of three- charge super- symmetric microstate geometries. We compute the real and imaginary parts of the quasinormal modes and show that in the parameter range when the geo
Externí odkaz:
https://doaj.org/article/0ef98a87854e46c9849bc70d2b0799d2
Autor:
V. V. Sreedhar, Amitabh Virmani
Publikováno v:
Universe, Vol 8, Iss 6, p 319 (2022)
The maximal kinematical invariance group of the Euler equations of fluid dynamics for the standard polytropic exponent is larger than the Galilei group. Specifically, the inversion transformation (Σ:t→−1/t,x→→x→/t) leaves the Euler equatio
Externí odkaz:
https://doaj.org/article/2dffac31176d4ff299e13ba960d8d815
Autor:
Pratik Roy, Amitabh Virmani
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 8, Pp 1-33 (2018)
Abstract The Riemann-Hilbert approach to studying solutions of supergravity theories allows us to associate spacetime independent monodromy matrices (matrices in the Geroch group) with solutions that effectively only depend on two spacetime coordinat
Externí odkaz:
https://doaj.org/article/8e7d5062b44747d5b24829a3dfa0c8d2