Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Upamanyu Moitra"'
Autor:
Atish Dabholkar, Upamanyu Moitra
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 12, Pp 1-12 (2024)
Abstract We construct ℤ N orbifolds of the ten-dimensional heterotic string theories appropriate for implementing the stringy replica method for the calculation of quantum entanglement entropy. A novel feature for the heterotic string is that the g
Externí odkaz:
https://doaj.org/article/4502423b63ac40869176c7a5ef3b3f2a
Autor:
Atish Dabholkar, Upamanyu Moitra
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 6, Pp 1-16 (2024)
Abstract We consider ℤ N orbifolds of Type-II compactifications to four and six dimensions on several Calabi-Yau manifolds in the orbifold limit with the aim to compute the entanglement entropy. The spectrum can contain tachyons in the doubly-twist
Externí odkaz:
https://doaj.org/article/4c5a716e47634df4a1c40aa697171e60
Autor:
Atish Dabholkar, Upamanyu Moitra
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 6, Pp 1-26 (2024)
Abstract We compute the exact one-loop partition function of ℤ N orbifolds of Euclidean BTZ black hole with the aim to compute the entanglement entropy of the black hole horizon in string theory as a function of the mass and spin of the black hole
Externí odkaz:
https://doaj.org/article/28db41fcbd3c43caa94274ea1c8906c2
Autor:
Upamanyu Moitra
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 6, Pp 1-44 (2023)
Abstract We initiate a systematic study of continuously self-similar (CSS) gravitational dynamics in two dimensions, motivated by critical phenomena observed in higher dimensional gravitational theories. We consider CSS spacetimes admitting a homothe
Externí odkaz:
https://doaj.org/article/d59aeab889284ab4be7b42d41a62e3ae
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 6, Pp 1-88 (2022)
Abstract We discuss JT gravity in AdS and dS space in the second order formalism. For the pure dS JT theory without matter, we show that the path integral gives rise in general to the Hartle-Hawking wave function which describes an arbitrary number o
Externí odkaz:
https://doaj.org/article/d0ea3fe8f7f740c9b3fb133b4c5a24ab
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 10, Pp 1-103 (2021)
Abstract We formulate the path integral for Jackiw-Teitelboim gravity in the second order formalism working directly with the metric and the dilaton. We consider the theory both in Anti-de Sitter(AdS) and de Sitter space(dS) and analyze the path inte
Externí odkaz:
https://doaj.org/article/17f0cf5134614283a444a04e66cdd106
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 2, Pp 1-78 (2021)
Abstract We analyse near-extremal black brane configurations in asymptotically AdS4 spacetime with the temperature T, chemical potential μ, and three-velocity u ν , varying slowly. We consider a low-temperature limit where the rate of variation is
Externí odkaz:
https://doaj.org/article/dc63b0c7aa9f41ce84fd7f09f5bf6968
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 4, Pp 1-58 (2020)
Abstract We analyse the Jackiw-Teitelboim model of 2D gravity coupled to N massless free scalar fields in the semi-classical limit. Two systems are studied which essentially differ in the boundary conditions that are imposed. We find that the thermod
Externí odkaz:
https://doaj.org/article/dd2fe9d27bbd4d768f847b74f2df5995
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 11, Pp 1-51 (2019)
Abstract We show that the free energy at low temperatures for near-extremal black holes is correctly obtained from the Jackiw-Teitelboim (JT) model of gravity. Our arguments apply to all black holes, including rotating ones, whose metric has a near-h
Externí odkaz:
https://doaj.org/article/94351370c9294917b582c4ae5246a635
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 8, Pp 1-24 (2019)
Abstract A definition for the entanglement entropy in both Abelian and non-Abelian gauge theories has been given in the literature, based on an extended Hilbert space construction. The result can be expressed as a sum of two terms, a classical term a
Externí odkaz:
https://doaj.org/article/689bfd9265e949dda7535a2ba4f2bc09