English

Is entanglement a probe of confinement?

High Energy Physics - Theory 2021-03-17 v2 High Energy Physics - Phenomenology Quantum Physics

Abstract

We study various entanglement measures in a one-parameter family of three-dimensional, strongly coupled Yang-Mills-Chern-Simons field theories by means of their dual supergravity descriptions. A generic field theory in this family possesses a mass gap but does not have a linear quark-antiquark potential. For the two limiting values of the parameter, the theories flow either to a fixed point or to a confining vacuum in the infrared. We show that entanglement measures are unable to discriminate confining theories from non-confining ones with a mass gap. This lends support on the idea that the phase transition of entanglement entropy at large-N can be caused just by the presence of a sizable scale in a theory and just by itself should not be taken as a signal of confinement. We also examine flows passing close to a fixed point at intermediate energy scales and find that the holographic entanglement entropy, the mutual information, and the F-functions for strips and disks quantitatively match the conformal values for a range of energies.

Keywords

Cite

@article{arxiv.2010.09392,
  title  = {Is entanglement a probe of confinement?},
  author = {Niko Jokela and Javier G. Subils},
  journal= {arXiv preprint arXiv:2010.09392},
  year   = {2021}
}

Comments

22 pages + appendices, 13 figures