Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Seth K Asante"'
Autor:
Seth K. Asante, Bianca Dittrich
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 5, Pp 1-30 (2022)
Abstract Lattice actions and amplitudes that perfectly mirror continuum physics are known as perfect discretizations. Such perfect discretizations naturally preserve the symmetries of the continuum. This is a key concern for general relativity, where
Externí odkaz:
https://doaj.org/article/adf1891d126a45219db33408a1475596
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 1, Pp 1-50 (2019)
Abstract Gravity is uniquely situated in between classical topological field theories and standard local field theories. This can be seen in the quasi-local nature of gravitational observables, but is nowhere more apparent than in gravity’s hologra
Externí odkaz:
https://doaj.org/article/6a9ae39e5406467bbea9e1a9a469c57c
Publikováno v:
Universe, Vol 5, Iss 8, p 181 (2019)
In this work we construct holographic boundary theories for linearized 3D gravity, for a general family of finite or quasi-local boundaries. These boundary theories are directly derived from the dynamics of 3D gravity by computing the effective actio
Externí odkaz:
https://doaj.org/article/8f450f4e1c4441cfa089ae208dd41b77
Numerical methods in spin-foam models have significantly advanced in the last few years, yet challenges remain in efficiently extracting results for amplitudes with many quantum degrees of freedom. In this paper we sketch a proposal for a ``hybrid al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad0a6920509e6d7df9181edb6797e335
http://arxiv.org/abs/2206.13540
http://arxiv.org/abs/2206.13540
Publikováno v:
Classical and Quantum Gravity, 40, 1-45
Classical and Quantum Gravity, 40, 10, pp. 1-45
INSPIRE-HEP
Classical and Quantum Gravity, 40, 10, pp. 1-45
INSPIRE-HEP
For the construction of the Lorentzian path integral for gravity one faces two main questions: Firstly, what configurations to include, in particular whether to allow Lorentzian metrics that violate causality conditions. And secondly, how to evaluate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c36ebf29a361c892b0e57e0617b52981
http://arxiv.org/abs/2112.15387
http://arxiv.org/abs/2112.15387
Making the Lorentzian path integral for quantum gravity well-defined and computable has been a long standing challenge. In this work we adopt the recently proposed effective spin foam models to the Lorentzian case. This defines a path integral over d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd0bc09bc637f6b0d01d5a4d6d0240e2
A number of approaches to four-dimensional quantum gravity, such as loop quantum gravity and holography, situate areas as their fundamental variables. However, this choice of kinematics can easily lead to gravitational dynamics peaked on flat spaceti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::23e16141b7647354626151c71cd18d57
Higher gauge theories play a prominent role in the construction of 4d topological invariants and have been long ago proposed as a tool for 4d quantum gravity. The Yetter lattice model and its continuum counterpart, the BFCG theory, generalize BF theo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee3082a94505ad48c272735e7e716c90
http://arxiv.org/abs/1908.05970
http://arxiv.org/abs/1908.05970
Publikováno v:
Journal of High Energy Physics
Journal of High Energy Physics, 2019, 1, pp. 1-50
Journal of High Energy Physics, Vol 2019, Iss 1, Pp 1-50 (2019)
Journal of High Energy Physics, 2019, 1-50
Journal of High Energy Physics, 2019, 1, pp. 1-50
Journal of High Energy Physics, Vol 2019, Iss 1, Pp 1-50 (2019)
Journal of High Energy Physics, 2019, 1-50
Gravity is uniquely situated in between classical topological field theories and standard local field theories. This can be seen in the the quasi-local nature of gravitational observables, but is nowhere more apparent than in gravity's holographic fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2054a055c5b03aef6bb3a48e694a2bfc
http://repo.scoap3.org/api
http://repo.scoap3.org/api
Publikováno v:
Classical and Quantum Gravity. 38:145023
The first computation of a spin foam dynamics that provides a test of the quantum equations of motions of gravity is presented. Specifically, a triangulation that includes an inner edge is treated. The computation leverages the recently introduced ef
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db1f93b473fa97c9537b1a25b8f78fe0
https://doi.org/10.1088/1361-6382/ac011b
https://doi.org/10.1088/1361-6382/ac011b