Zobrazeno 1 - 10
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pro vyhledávání: '"Campiglia, Miguel"'
Autor:
Campiglia, Miguel, Sudhakar, Adarsh
Superrotations are local extensions of the Lorentz group at null infinity that have been argued to be symmetries of gravitational scattering. In their smooth version, they can be identified with the group of diffeomorphisms on the celestial sphere. T
Externí odkaz:
http://arxiv.org/abs/2408.13067
Autor:
Agriela, Adrián, Campiglia, Miguel
We consider soft electrons in massless QED at tree-level. The emission amplitude at leading order in the soft electron energy factorizes in a way similar to the soft photon case. We recast the soft electron factorization formula as a Ward identity of
Externí odkaz:
http://arxiv.org/abs/2307.11171
Autor:
Campiglia, Miguel, Peraza, Javier
Asymptotic symmetries of gauge theories are known to encode infrared properties of radiative fields. In the context of tree-level Yang-Mills theory, the leading soft behavior of gluons is captured by large gauge symmetries with parameters that are $O
Externí odkaz:
http://arxiv.org/abs/2111.00973
Autor:
Campiglia, Miguel, Laddha, Alok
The Lie algebra generated by supertranslation and superrotation vector fields at null infinity, known as the extended BMS (eBMS) algebra is expected to be a symmetry algebra of the quantum gravity S matrix. However, the algebra of commutators of the
Externí odkaz:
http://arxiv.org/abs/2106.14717
Autor:
Campiglia, Miguel, Nagy, Silvia
We give a double copy construction for the symmetries of the self-dual sectors of Yang-Mills (YM) and gravity, in the light-cone formulation. We find an infinite set of double copy constructible symmetries. We focus on two families which correspond t
Externí odkaz:
http://arxiv.org/abs/2102.01680
Autor:
Campiglia, Miguel, Peraza, Javier
Publikováno v:
Phys. Rev. D 101, 104039 (2020)
It has been argued that the symmetries of gravity at null infinity should include a Diff$(S^2)$ factor associated to diffeomorphisms on the celestial sphere. However, the standard phase space of gravity does not support the action of such transformat
Externí odkaz:
http://arxiv.org/abs/2002.06691
Autor:
Campiglia, Miguel, Laddha, Alok
Recently Sahoo and Sen obtained a series of remarkable results concerning sub-leading soft photon and graviton theorems in four dimensions. Even though the S- matrix is infrared divergent, they have shown that the sub-leading soft theorems are well d
Externí odkaz:
http://arxiv.org/abs/1903.09133
Autor:
Campiglia, Miguel, Laddha, Alok
Hamada and Shiu have recently shown that tree level amplitudes in QED satisfy an infinite hierarchy of soft photon theorems, the first two of which are Weinberg and Low's theorems respectively. In this paper we propose that in tree level massless QED
Externí odkaz:
http://arxiv.org/abs/1810.04619
Publikováno v:
JHEP 04 (2019) 003
In recent years soft factorization theorems in scattering amplitudes have been reinterpreted as conservation laws of asymptotic charges. In gauge, gravity, and higher spin theories the asymptotic charges can be understood as canonical generators of l
Externí odkaz:
http://arxiv.org/abs/1810.04213
Publikováno v:
Gen. Relativ. Grav, 50, 140-163 (2018)
There has been a recent resurgence of interest in the structure of the gravitational field at null infinity, sparked by new results on soft charges and infrared issues related to the S matrix theory in perturbative quantum gravity. We summarize these
Externí odkaz:
http://arxiv.org/abs/1808.07093