Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Romain Ruzziconi"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 10, Pp 1-41 (2024)
Abstract The celestial Lw 1+∞ symmetries in asymptotically flat spacetimes have a natural geometric interpretation on twistor space in terms of Poisson diffeomorphisms. Using this framework, we provide a first-principle derivation of the canonical
Externí odkaz:
https://doaj.org/article/607d24405fc8422b97d42d48d1238859
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 9, Pp 1-27 (2024)
Abstract Differential equations are powerful tools in the study of correlation functions in conformal field theories (CFTs). Carrollian amplitudes behave as correlation functions of Carrollian CFT that holographically describes asymptotically flat sp
Externí odkaz:
https://doaj.org/article/30fba9ae08d845469c262b0f643658dd
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 5, Pp 1-51 (2024)
Abstract Carrollian holography aims to express gravity in four-dimensional asymptotically flat spacetime in terms of a dual three-dimensional Carrollian CFT living at null infinity. Carrollian amplitudes are massless scattering amplitudes written in
Externí odkaz:
https://doaj.org/article/11ddd5eb0c2e4ace9b32cb38ce7363bc
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 2, Pp 1-18 (2024)
Abstract Soft graviton theorems receive one-loop contributions that are logarithmic in the energy of the soft graviton, and which are closely related to tails of gravitational waveforms. We demonstrate that these logarithmic corrections are encoded i
Externí odkaz:
https://doaj.org/article/6fe833c555814e519165a535c5132849
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 2, Pp 1-32 (2024)
Abstract Leaky boundary conditions in asymptotically AdS spacetimes are relevant to discuss black hole evaporation and the evolution of the Page curve via the island formula. We explore the consequences of leaky boundary conditions on the one-loop pa
Externí odkaz:
https://doaj.org/article/bf46dfc162af4e1181eac8f76dab5a9e
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 12, Pp 1-21 (2022)
Abstract The constrained Hamiltonian analysis of geometric actions is worked out before applying the construction to the extended Bondi-Metzner-Sachs group in four dimensions. For any Hamiltonian associated with an extended BMS4 generator, this actio
Externí odkaz:
https://doaj.org/article/c5123ec9ee324abb94c8fe3dd4730817
Autor:
Andrea Campoleoni, Luca Ciambelli, Arnaud Delfante, Charles Marteau, P. Marios Petropoulos, Romain Ruzziconi
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 12, Pp 1-47 (2022)
Abstract Relaxing the Bondi gauge, the solution space of three-dimensional gravity in the metric formulation has been shown to contain an additional free function that promotes the boundary metric to a Lorentz or Carroll frame, in asymptotically AdS
Externí odkaz:
https://doaj.org/article/2e0a30f5f7cb4aa1bd735eb351a81f4c
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 2, Pp 1-1 (2024)
Externí odkaz:
https://doaj.org/article/50041d0ec20a4e24aeeb9c36bed6fd1d
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 9, Pp 1-25 (2022)
Abstract We demonstrate that the one-loop exact subleading soft graviton theorem automatically follows from conservation of the BMS charges, provided that the hard and soft fluxes separately represent the extended BMS algebra at null infinity. This c
Externí odkaz:
https://doaj.org/article/b5840861a37140e9bd4de7153b39dd47
Autor:
Laura Donnay, Romain Ruzziconi
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 11, Pp 1-27 (2021)
Abstract Starting from gravity in asymptotically flat spacetime, the BMS momentum fluxes are constructed. These are non-local expressions of the solution space living on the celestial Riemann surface. They transform in the coadjoint representation of
Externí odkaz:
https://doaj.org/article/47d352e074cc428ea708e6411b8522f9