Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Yoav Zigdon"'
Autor:
Jorge E. Santos, Yoav Zigdon
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 7, Pp 1-28 (2024)
Abstract In the context of the black hole/string transition, it is useful to produce Euclidean string backgrounds representing hot and self-gravitating strings. We utilise analytical and numerical methods to find a smooth, stationary rotating solutio
Externí odkaz:
https://doaj.org/article/37f4f5f50ad440a899b257e1dd2940c4
Autor:
Emil J. Martinec, Yoav Zigdon
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 2, Pp 1-24 (2024)
Abstract We investigate quantum fluctuations of metric components in coherent 1/2-BPS bound states of n 1 fundamental strings and n 5 NS5-branes. The leading order contribution in an expansion in 1/(n 1 n 5) is calculated via a combination of analyti
Externí odkaz:
https://doaj.org/article/93688fb5ff7b4c6e85535a8ffc36d238
Autor:
Emil J. Martinec, Yoav Zigdon
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 2, Pp 1-60 (2024)
Abstract We study ensembles of 1/2-BPS bound states of fundamental strings and NS-fivebranes (NS5-F1 states) in the AdS decoupling limit. We revisit a solution corresponding to an ensemble average of these bound states, and find that the appropriate
Externí odkaz:
https://doaj.org/article/525e340f001849db81983c2a23528d64
Autor:
Ram Brustein, Yoav Zigdon
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 10, Pp 1-30 (2022)
Abstract We show that the entropy of strings that wind around the Euclidean time circle is proportional to the Noether charge associated with translations along the T-dual time direction. We consider an effective target-space field theory which inclu
Externí odkaz:
https://doaj.org/article/95b766ee3a074663862f42020f5faab4
Autor:
Ram Brustein, Yoav Zigdon
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 5, Pp 1-20 (2022)
Abstract In string theory, a thermal state is described by compactifying Euclidean time on a thermal circle S β 1 $$ {S}_{\beta}^1 $$ , of fixed circumference. However, this circumference is a dynamical field which could vary in space, therefore the
Externí odkaz:
https://doaj.org/article/68f2ced0920c42ee801905d7bcdcb805
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 4, Pp 1-20 (2022)
Abstract We consider the backreaction of the winding condensate on the cigar background. We focus on the case of the SL(2, ℝ) k /U(1) cigar associated with, e.g., the near-horizon limit of k NS5 black-branes. We solve the equations of motion numeri
Externí odkaz:
https://doaj.org/article/e045fbc14c1246a39efb084120ea1682
Autor:
Ram Brustein, Yoav Zigdon
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 10, Pp 1-14 (2021)
Abstract We calculate the entropy of an asymptotically Schwarzschild black hole, using an effective field theory of winding modes in type II string theory. In Euclidean signature, the geometry of the black hole contains a thermal cycle which shrinks
Externí odkaz:
https://doaj.org/article/5078d3771b344657a96c42979f18abbf
Autor:
Ram Brustein, Yoav Zigdon
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 4, Pp 1-27 (2021)
Abstract We discuss interacting, closed, bosonic and superstrings in thermal equilibrium at temperatures close to the Hagedorn temperature in flat space. We calculate S-matrix elements of the strings at the Hagedorn temperature and use them to constr
Externí odkaz:
https://doaj.org/article/223411a230e34e2cb9eb3890a9712621
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 1, Pp 1-24 (2018)
Abstract We show that the state of the Hawking radiation emitted from a large Schwarzschild black hole (BH) deviates significantly from a classical state, in spite of its apparent thermal nature. For this state, the occupation numbers of single modes
Externí odkaz:
https://doaj.org/article/90b3159f04fc467aa79e5cab6a91a98f
Autor:
Ram Brustein, Yoav Zigdon
Publikováno v:
Physical Review
The Sachdev-Ye-Kitaev (SYK) model can be used to describe black holes (BHs) in two-dimensional nearly anti--de Sitter gravity. We show that when such BHs are perturbed by a time-dependent negative-energy perturbation, their interior can be partially