Zobrazeno 1 - 10
of 144
pro vyhledávání: '"Pranzetti, Daniele"'
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
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
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
In the context of the infrared triangle there have been recent discussions on the existence and the role of dual charges. We present a new viewpoint on dual magnetic charges in $p$-form theories, and argue that they can be inherited from the charges
Externí odkaz:
http://arxiv.org/abs/2107.05443
Publikováno v:
J. High Energ. Phys. 2021, 83 (2021)
We develop the covariant phase space formalism allowing for non-vanishing flux, anomalies and field dependence in the vector field generators. We construct a charge bracket that generalizes the one introduced by Barnich and Troessaert and includes co
Externí odkaz:
http://arxiv.org/abs/2104.12881
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