Zobrazeno 1 - 10
of 97
pro vyhledávání: '"Suddhasattwa Brahma"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 10, Pp 1-29 (2024)
Abstract One of the pertinent question in the analysis of de Sitter as an excited state is what happens to the Glauber-Sudarshan states that are off-shell, i.e. the states that do not satisfy the Schwinger-Dyson equations. We argue that these Glauber
Externí odkaz:
https://doaj.org/article/bab873f61a3846359df529ca8557d210
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 5, Pp 1-24 (2024)
Abstract In this work, we extend previous results, demonstrating how complexity in an open quantum system can identify decoherence between two fields, even in the presence of an accelerating background. Using the curved-space Caldeira-Leggett two-fie
Externí odkaz:
https://doaj.org/article/54e6324da1f34bafa5cecbaff0764208
Autor:
Samuel Laliberte, Suddhasattwa Brahma
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 11, Pp 1-24 (2023)
Abstract Matrix theory is a proposed non-perturbative definition of superstring theory in which space is emergent. Recently, it was shown that space-time can emerge with a scale-invariant spectrum of cosmological perturbations which is sourced by the
Externí odkaz:
https://doaj.org/article/5741ac78673c4126847eca9e071165eb
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 10, Pp 1-14 (2023)
Abstract We apply the Gaussian expansion method to the BFSS matrix model in the high temperature limit. When the (Euclidean) BFSS action is expanded about a Gaussian ansatz, it is shown that the SO(9) symmetry is spontaneously broken, analogous to wh
Externí odkaz:
https://doaj.org/article/95a23c6ea4894fdc901dfb8abb9d0a7a
Publikováno v:
Physics, Vol 5, Iss 1, Pp 1-10 (2022)
We review a proposal to obtain an emergent metric space-time and an emergent early universe cosmology from the Banks–Fischler–Shenker–Susskind (BFSS) matrix model. Some challenges and directions for future research are outlined.
Externí odkaz:
https://doaj.org/article/a1f34aaf17bb49c8999e2377d0a6b1eb
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 9, Pp 1-18 (2022)
Abstract The IKKT matrix model yields an emergent space-time. We further develop these ideas and give a proposal for an emergent metric. Based on previous numerical studies of this model, we provide evidence that the emergent space-time is continuous
Externí odkaz:
https://doaj.org/article/55a00b4ae47242168d66a5350eb2103d
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 9, Pp 1-14 (2022)
Abstract In canonical quantum gravity, the wave function for a hypersurface inside a Schwarzschild black hole can be obtained by solving the Wheeler–DeWitt equation. What is of prime importance is the behavior of the wave function for the future bo
Externí odkaz:
https://doaj.org/article/d0c576385ee840f7adc60c0ae4e95c2e
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 8, Pp 1-34 (2022)
Abstract Perturbative quantum corrections to primordial power spectra are important for testing the robustness and the regime of validity of inflation as an effective field theory. Although this has been done extensively for the density power spectru
Externí odkaz:
https://doaj.org/article/cd514e8b681b41e58dbda0299cdb1bee
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 3, Pp 1-22 (2022)
Abstract Matrix theory is a proposed non-perturbative definition of superstring theory in which space is emergent. We begin a study of cosmology in the context of matrix theory. Specifically, we show that matrix theory can lead to an emergent non-sin
Externí odkaz:
https://doaj.org/article/0b10fd4ded2245aea4f9b876327eb3a1
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 7, Pp 1-13 (2021)
Abstract We show that four-dimensional de Sitter space is a Glauber-Sudarshan state, i.e. a coherent state, over a supersymmetric solitonic background in full string theory. We argue that such a state is only realized in the presence of temporally va
Externí odkaz:
https://doaj.org/article/2bfd3e956379459290346358ee322542