Zobrazeno 1 - 10
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pro vyhledávání: '"Ciambelli P."'
Autor:
Ciambelli, Luca, Geiller, Marc
When studying gauge theories in the presence of boundaries, local symmetry transformations are typically classified as gauge or physical depending on whether the associated charges vanish or not. Here, we propose that physical charges should further
Externí odkaz:
http://arxiv.org/abs/2412.14992
Autor:
Ball, Adam, Ciambelli, Luca
We study the symplectic structure and dynamics of Yang-Mills theory in the presence of a boundary. We introduce a decomposition of the fields on a Cauchy slice such that the symplectic form splits cleanly into independent bulk and edge parts. However
Externí odkaz:
http://arxiv.org/abs/2412.06672
In this work, we demonstrate that quantizing gravity on a null hypersurface leads to the emergence of a CFT associated with each null ray. This result stems from the ultralocal nature of null physics and is derived through a canonical analysis of the
Externí odkaz:
http://arxiv.org/abs/2407.11132
The corner symmetry algebra organises the physical charges induced by gravity on codimension-$2$ corners of a manifold. In this letter, we initiate a study of the quantum properties of this group. We first describe the central extensions and how the
Externí odkaz:
http://arxiv.org/abs/2406.07101
Chiral shift symmetries of the massless free bosons in two dimensions are global symmetries that are somewhat similar to asymptotic symmetries. They are most transparent in double-null coordinates where they are parametrized by two functions of one v
Externí odkaz:
http://arxiv.org/abs/2405.17722
We show how to encode the radiative degrees of freedom in $4$-dimensional asymptotically AdS spacetimes, using the boundary Cotton and stress tensors. Background radiation leads to a reduction of the asymptotic symmetry group, in contrast to asymptot
Externí odkaz:
http://arxiv.org/abs/2404.02146
Autor:
Ciambelli, Luca
Adopting an intrinsic Carrollian viewpoint, we show that the generic Carrollian scalar field action is a combination of electric and magnetic actions, found in the literature by taking the Carrollian limit of the relativistic scalar field. This leads
Externí odkaz:
http://arxiv.org/abs/2311.04113
Autor:
Ciambelli, Luca, Grumiller, Daniel
Using effective field theory methods, we derive the Carrollian analog of the geodesic action. We find that it contains both `electric' and `magnetic' contributions that are in general coupled to each other. The equations of motion descending from thi
Externí odkaz:
http://arxiv.org/abs/2311.04112
Autor:
Ciambelli, Luca, Lehner, Luis
The fluid-gravity correspondence is a duality between anti-de Sitter Einstein gravity and a relativistic fluid living at the conformal boundary. We show that one can accommodate the causal first-order viscous hydrodynamics recently developed by Bemfi
Externí odkaz:
http://arxiv.org/abs/2310.15427
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 12, Pp 1-62 (2024)
Abstract In this work, we demonstrate that quantizing gravity on a null hypersurface leads to the emergence of a CFT associated with each null ray. This result stems from the ultralocal nature of null physics and is derived through a canonical analys
Externí odkaz:
https://doaj.org/article/3cfdd6fb5cf74d1a8f47ace7bb740b58
