Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Garbarz, Alan"'
Autor:
Garbarz, Alan, Palau, Gabriel
We compute Araki's relative entropy associated to a bounded interval $I=(a,b)$ between a thermal state and a coherent excitation of itself in the bosonic U(1)-current model, namely the (derivative of the) chiral boson. For this purpose we briefly rev
Externí odkaz:
http://arxiv.org/abs/2209.00035
We continue the study of the one-loop partition function of AdS$_3$ gravity with focus on the square-integrability condition on the fluctuating fields. In a previous work we found that the Brown-Henneaux boundary conditions follow directly from the $
Externí odkaz:
http://arxiv.org/abs/2109.06938
Autor:
Garbarz, Alan, Palau, Gabriel
Haag duality is a remarkable property in QFT stating that the commutant of the algebra of observables localized in some region of spacetime is exactly the algebra associated to the causally disconnected region. It is a strong condition on the local s
Externí odkaz:
http://arxiv.org/abs/2108.01257
Publikováno v:
JHEP06(2020)172
There has been renewed interest in the path-integral computation of the partition function of AdS3 gravity, both in the metric and Chern-Simons formulations. The one-loop partition function around Euclidean AdS3 turns out to be given by the vacuum ch
Externí odkaz:
http://arxiv.org/abs/2004.01723
A spacelike surface with cylinder topology can be described by various sets of canonical variables within pure AdS3 gravity. Each is made of one real coordinate and one real momentum. The Hamiltonian can be either $H=0$ or it can be nonzero and we di
Externí odkaz:
http://arxiv.org/abs/2003.08955
Publikováno v:
J. High Energ. Phys. (2019) 2019: 135
We consider the problem of defining spacelike-supported boundary-to-bulk propagators in AdS$_{d+1}$ down to the unitary bound $\Delta=(d-2)/2$. That is to say, we construct the `smearing functions' $K$ of HKLL but with different boundary conditions w
Externí odkaz:
http://arxiv.org/abs/1908.05738
Publikováno v:
J. High Energ. Phys. (2019) 2019: 76
In this paper we present the detailed calculation of a new modular Hamiltonian, namely that of a chiral fermion on a circle at non-zero temperature. We provide explicit results for an arbitrary collection of intervals, which we discuss at length by c
Externí odkaz:
http://arxiv.org/abs/1906.07057
Publikováno v:
Eur. Phys. J. C (2017) 77: 807
The revisit the dynamics of a massive scalar field in a BTZ background taking into account the lack of global hyperbolicity of the spacetime. We approach this issue using the strategy of Ishibashi and Wald which finds a unique smooth solution as the
Externí odkaz:
http://arxiv.org/abs/1708.04905
Autor:
Garbarz, Alan
We show that the Virasoro Gibbs state accurately describes the thermodynamics of BTZ black holes at large temperatures and in the strong-coupling regime $c<1$. We first give a simple heuristic argument by showing that at high temperatures and arbitra
Externí odkaz:
http://arxiv.org/abs/1611.05465
Autor:
Garbarz, Alan, Leston, Mauricio
Publikováno v:
Nuclear Physics B, Volume 906, 133 (2016)
We compute characters of the BMS group in three dimensions. The approach is the same as that performed by Witten in the case of coadjoint orbits of the Virasoro group in the eighties, within the large central charge approximation. The procedure invol
Externí odkaz:
http://arxiv.org/abs/1507.00339