Zobrazeno 1 - 10
of 258
pro vyhledávání: '"Pranzetti P"'
We propose a solution to a classic problem in gravitational physics consisting of defining the spin associated with asymptotically-flat spacetimes. We advocate that the correct asymptotic symmetry algebra to approach this problem is the generalized-B
Externí odkaz:
http://arxiv.org/abs/2403.19547
Similar to gravity, an infinite tower of symmetries generated by higher-spin charges has been identified in Yang-Mills theory by studying collinear limits or celestial operator products of gluons. This work aims to recover this loop symmetry in terms
Externí odkaz:
http://arxiv.org/abs/2306.02373
Autor:
Chiara Vangelista
Publikováno v:
Anuac, Vol 5, Iss 2 (2017)
Recensione di Luisa Pranzetti, Alessandro Lupo, Civiltà e religione degli Aztechi, Milano, Mondadori, 2015, pp. LXX-1326.
Externí odkaz:
https://doaj.org/article/024002a6ea404b428b426f246e375e94
We give an account of the state of the art about black hole entropy in Loop Quantum Gravity. This chapter contains a historical summary and explains how black hole entropy is described by relying on the concept of isolated horizon, with an emphasis o
Externí odkaz:
http://arxiv.org/abs/2212.13469
Celestial holography provides a reformulation of scattering amplitudes in four dimensional asymptotically flat spacetimes in terms of conformal correlators of operators on the two dimensional celestial sphere in a basis of boost eigenstates. A basis
Externí odkaz:
http://arxiv.org/abs/2212.12469
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 2, Pp 1-53 (2024)
Abstract Celestial holography provides a reformulation of scattering amplitudes in four dimensional asymptotically flat spacetimes in terms of conformal correlators of operators on the two dimensional celestial sphere in a basis of boost eigenstates.
Externí odkaz:
https://doaj.org/article/2b5069db114f45688c7a0c2f552e832f
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 12, Pp 1-45 (2023)
Abstract Similar to gravity, an infinite tower of symmetries generated by higher-spin charges has been identified in Yang-Mills theory by studying collinear limits or celestial operator products of gluons. This work aims to recover this loop symmetry
Externí odkaz:
https://doaj.org/article/e3c93640a4d641dfbb59e9d48893f298
In this paper we extract from a large-$r$ expansion of the vacuum Einstein's equations a dynamical system governing the time evolution of an infinity of higher-spin charges. Upon integration, we evaluate the canonical action of these charges on the g
Externí odkaz:
http://arxiv.org/abs/2112.15573
We identify in Einstein gravity an asymptotic spin-$2$ charge aspect whose conservation equation gives rise, after quantization, to the sub-subleading soft theorem. Our treatment reveals that this spin-$2$ charge generates a non-local spacetime symme
Externí odkaz:
http://arxiv.org/abs/2111.15607
Autor:
Freidel, Laurent, Pranzetti, Daniele
We show that we can derive the asymptotic Einstein's equations that arises at order $1/r$ in asymptotically flat gravity purely from symmetry considerations. This is achieved by studying the transformation properties of functionals of the metric and
Externí odkaz:
http://arxiv.org/abs/2109.06342