Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Pontello, Diego"'
Publikováno v:
JHEP 09 (2022) 090
We study the entanglement entropies of an interval adjacent to the boundary of the half line for the free fermionic spinless Schr\"odinger field theory at finite density and zero temperature, with either Neumann or Dirichlet boundary conditions. They
Externí odkaz:
http://arxiv.org/abs/2206.06187
Publikováno v:
JHEP 07 (2022) 120
We study the entanglement entropies of an interval on the infinite line in the free fermionic spinless Schr\"odinger field theory at finite density and zero temperature, which is a non-relativistic model with Lifshitz exponent $z=2$. We prove that th
Externí odkaz:
http://arxiv.org/abs/2201.04522
We propose entropic order parameters that capture the physics of generalized symmetries and phases in QFT's. We do it through an analysis of simple properties (additivity and Haag duality) of the net of operator algebras attached to space-time region
Externí odkaz:
http://arxiv.org/abs/2008.11748
Autor:
Pontello, Diego
In this thesis, we study aspects of entanglement theory of quantum field theories from an algebraic point of view. The main motivation is to gain insights about the general structure of the entanglement in QFT, towards a definition of an entropic ver
Externí odkaz:
http://arxiv.org/abs/2005.13975
Autor:
Magan, Javier M., Pontello, Diego
Publikováno v:
Phys. Rev. A 103, 012211 (2021)
We approach the physical implications of the non-commutative nature of Complementary Observable Algebras (COA) from an information theoretic perspective. In particular, we derive a general \textit{entropic certainty principle} stating that the sum of
Externí odkaz:
http://arxiv.org/abs/2005.01760
Publikováno v:
Phys. Rev. D 101, 065020 (2020)
We elucidate the mismatch between the $A$-anomaly coefficient and the coefficient of the logarithmic term in the entanglement entropy of a Maxwell field. In contrast to the usual assumptions about the protection of renormalization group charges at th
Externí odkaz:
http://arxiv.org/abs/1911.00529
Some quantum field theories show, in a fundamental or an effective manner, an alternative between a loss of duality for algebras of operators corresponding to complementary regions, or a loss of additivity. In this latter case, the algebra contains s
Externí odkaz:
http://arxiv.org/abs/1905.10487
Publikováno v:
Phys. Rev. D 99, 125020 (2019)
We make a rigorous computation of the relative entropy between the vacuum state and a coherent state for a free scalar in the framework of AQFT. We study the case of the Rindler Wedge. Previous calculations including path integral methods and computa
Externí odkaz:
http://arxiv.org/abs/1903.00109
Publikováno v:
Phys. Rev. D 98, 125008 (2018)
We calculate the analytic form of the vacuum modular Hamiltonian for a two interval region and the algebra of a current $j(x)=\partial \phi(x)$ corresponding to a chiral free scalar $\phi$ in $d=2$. We also compute explicitly the mutual information b
Externí odkaz:
http://arxiv.org/abs/1809.00026
Publikováno v:
Phys. Rev. D 96, 105019 (2017)
The relative entropy between very high energy localized excitations and the vacuum, where both states are reduced to a spatial region, gives place to a precise definition of a local temperature produced by vacuum entanglement across the boundary. Thi
Externí odkaz:
http://arxiv.org/abs/1707.05375