Zobrazeno 1 - 10
of 5 121
pro vyhledávání: '"BMS group"'
Autor:
Fuentealba, Oscar, Henneaux, Marc
The asymptotic structure of gravity in $D=6$ spacetime dimensions is described at spatial infinity in the asymptotically flat context through Hamiltonian (ADM) methods. Special focus is given on the BMS supertranslation subgroup. It is known from pre
Externí odkaz:
http://arxiv.org/abs/2312.12627
Autor:
Prabhu, Kartik, Satishchandran, Gautam
Publikováno v:
JHEP 08 (2024) 055
Any non-trivial scattering with any massless fields in four spacetime dimensions will generically produce an "out" state with memory which gives rise to infrared divergences in the standard $S$-matrix. To obtain an infrared-finite scattering theory,
Externí odkaz:
http://arxiv.org/abs/2402.00102
Autor:
Kartik Prabhu, Gautam Satishchandran
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 8, Pp 1-34 (2024)
Abstract Any non-trivial scattering with massless fields in four spacetime dimensions will generically produce an “out” state with memory which gives rise to infrared divergences in the standard S-matrix. To obtain an infrared-finite scattering t
Externí odkaz:
https://doaj.org/article/50f57fb8680b4c1f9aafebcef51e6f7f
Autor:
Weiss, Daniel Alexander
Publikováno v:
J. High Energ. Phys. 2023, 136 (2023)
We consider a microscopic analogue of the BMS analysis of asymptotic symmetries by analysing universal geometric structures on infinitesimal tangent light cones. Thereby, two natural microscopic symmetry groups arise: A non-trivially represented Lore
Externí odkaz:
http://arxiv.org/abs/2302.03111
Autor:
Prinz, David, Schmeding, Alexander
Publikováno v:
Class. Quantum Grav. 39 (2022) 065004
We study the Lie group structure of asymptotic symmetry groups in General Relativity from the viewpoint of infinite-dimensional geometry. To this end, we review the geometric definition of asymptotic simplicity and emptiness due to Penrose and the co
Externí odkaz:
http://arxiv.org/abs/2106.12513
Akademický článek
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Akademický článek
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Publikováno v:
J. High Energ. Phys. 2021, 170 (2021)
We propose an extension of the BMS group, which we refer to as Weyl BMS or BMSW for short, that includes, besides super-translations, local Weyl rescalings and arbitrary diffeomorphisms of the 2d sphere metric. After generalizing the Barnich-Troessae
Externí odkaz:
http://arxiv.org/abs/2104.05793
Autor:
Barnich, Glenn, Ruzziconi, Romain
The coadjoint representation of the BMS group in four dimensions is constructed in a formulation that covers both the sphere and the punctured plane. The structure constants are worked out for different choices of bases. The conserved current algebra
Externí odkaz:
http://arxiv.org/abs/2103.11253
Autor:
Ruzziconi, Romain
The Bondi-Metzner-Sachs-van der Burg (BMS) group is the asymptotic symmetry group of radiating asymptotically flat spacetimes. It has recently received renewed interest in the context of the flat holography and the infrared structure of gravity. In t
Externí odkaz:
http://arxiv.org/abs/2009.01926