Central Charge and Entangled Gauge Fields

Dec 8, 2014
9 pages
Published in:
  • Phys.Rev.D 92 (2015) 2, 025010
  • Published: Jul 6, 2015
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Abstract: (APS)
Entanglement entropy of gauge fields is calculated using the partition function in curved spacetime with a boundary. Deriving a Gibbons-Hawking-like term from a Becchi-Rouet-Stora-Tyutin (BRST) action produces a Wald-entropy-like codimension-2 surface term. It is further suggested that boundary degrees of freedom localized on the entanglement surface generated from the gauge redundancy could be used to resolve a subtle mismatch in a universal conformal anomaly-entanglement entropy relation.
Note:
  • 8 pages. v5: boundary term corrected with improved notation, minor improvements. More references added
  • 11.15.-q
  • 03.65.Ud
  • entropy: entanglement
  • gauge field theory
  • Becchi-Rouet-Stora
  • partition function
  • central charge
  • conformal