Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Benedetti, Valentín"'
Minimal d=2 CFTs are usually classified through modular invariant partition functions. There is a finer classification of ``non complete'' models when S-duality is not imposed. We approach this classification by starting with the local chiral algebra
Externí odkaz:
http://arxiv.org/abs/2412.16587
Autor:
Benedetti, Valentin, Casini, Horacio, Kawahigashi, Yasuyuki, Longo, Roberto, Magan, Javier M.
We review the physical meaning of modular invariance for unitary conformal quantum field theories in d=2. For QFT models, while T invariance is necessary for locality, S invariance is not mandatory. S invariance is a form of completeness of the theor
Externí odkaz:
http://arxiv.org/abs/2408.04011
The Adler-Bell-Jackiw anomaly determines the violation of chiral symmetry when massless fermions are coupled to an abelian gauge field. In its seminal paper, Adler noticed that a modified chiral U(1) symmetry could still be defined, at the expense of
Externí odkaz:
http://arxiv.org/abs/2309.03264
Autor:
Benedetti, Valentin, Daguerre, Lucas
Publikováno v:
Physical Review D 108, 086015 (2023)
We study the universal logarithmic coefficient of the entanglement entropy (EE) in a sphere for free fermionic field theories in a $d=4$ Minkowski spacetime. As a warm-up, we revisit the free massless spin-$1/2$ field case by employing a dimensional
Externí odkaz:
http://arxiv.org/abs/2307.00057
We construct generalized symmetries for linearized Einstein gravity in arbitrary dimensions. First-principle considerations in QFT force generalized symmetries to appear in dual pairs. Verifying this prediction helps us find the full set of non-trivi
Externí odkaz:
http://arxiv.org/abs/2305.13361
A theory with a non-compact form-symmetry is described by two closed form fields of degrees k and d-k. Effective theory examples are non-linear electrodynamics, a photon field coupled to a neutron field, and a low energy Goldstone boson. We show thes
Externí odkaz:
http://arxiv.org/abs/2212.11291
We study generalized free fields (GFF) from the point of view of information measures. We first review conformal GFF, their holographic representation, and the ambiguities in the assignation of algebras to regions that arise in these theories. Then w
Externí odkaz:
http://arxiv.org/abs/2210.00013
We show that generalized symmetries cannot be charged under a continuous global symmetry having a Noether current. Further, only non-compact generalized symmetries can be charged under a continuous global symmetry. These results follow from a finer c
Externí odkaz:
http://arxiv.org/abs/2205.03412
We find the set of generalized symmetries associated with the free graviton theory in four dimensions. These are generated by gauge invariant topological operators that violate Haag duality in ring-like regions. As expected from general QFT grounds,
Externí odkaz:
http://arxiv.org/abs/2111.12089
Autor:
Benedetti, Valentin, Casini, Horacio
Publikováno v:
Phys. Rev. D 101, 045004 (2020)
We compute the entanglement entropy of a massless spin $2$ field in a sphere in flat Minkowski space. We describe the theory with a linearized metric perturbation field $h_{\mu\nu}$ and decompose it in tensor spherical harmonics. We fix the gauge suc
Externí odkaz:
http://arxiv.org/abs/1908.01800