Adiabatic corrections to holographic entanglement in thermofield doubles and confining ground states

Ground states of holographic superconductors

We investigate the ground states of the Abelian Higgs model in AdS4 with various choices of parameters, and with no deformations in the ultraviolet other than a chemical potential for the electric charge under the Abelian gauge field. For W-shaped potentials with symmetrybreaking minima, an analysis of infrared asymptotics suggests that the ground state has emergent conformal symmetry in the in...

Entanglement and Ground States of Gapped Hamiltonians

Sigma Model Corrections to the Confining Background

Sigma model (α) corrections to the confining string background are obtained. The main result is that the Poincaré invariant ansatz is maintained. Physical conditions for the dissapearance of the naked singularity are discussed. E-mail: [email protected] E-mail: [email protected] E-mail: [email protected] Unidad de Investigación Asociada al Centro de F́ısica Miguel Catalán (C.S.I.C.) 1

From confining fields back to power corrections

We overview the issue of the power corrections to the parton model, mostly within the context of QCD sum rules. There are a few sources of the power corrections responsible for various qualitative effects. The basic idea that the power corrections are related to confining fields seems to be realized in case of 1/Q corrections which are dual to high orders of perturbation theory. The evidence co...

Entanglement and factorized ground states in two-dimensional quantum antiferromagnets.

Making use of exact results and quantum Monte Carlo data for the entanglement of formation, we show that the ground state of anisotropic two-dimensional S=1/2 antiferromagnets in a uniform field takes the classical-like form of a product state for a particular value and orientation of the field, at which the purely quantum correlations due to entanglement disappear. Analytical expressions for t...