Notes on Entanglement in Abelian Gauge Theories
Apr 4, 2014Citations per year
Abstract: (arXiv)
We streamline and generalize the recent progress in understanding entanglement between spatial regions in Abelian gauge theories. We provide an unambiguous and explicit prescription for calculating entanglement entropy in a lattice gauge theory. The main idea is that the lattice should be split into two disjoint regions of links separated by a buffer zone of plaquettes. We show that the previous calculations of the entanglement entropy can be realized as special cases of our setup, and we argue that the ambiguities reported in the previous work can be understood as basis choices for gauge-invariant operators living in the buffer zone. The proposed procedure applies to Abelian theories with matter and with continuous symmetry groups, both on the lattice and in the continuum.Note:
- 1+24 pages, 4 figures; comments welcome
- entropy: entanglement
- gauge field theory: abelian
- invariance: gauge
- lattice
- lattice field theory
References(23)
Figures(0)
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