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Lattice gerbe theory.

Lipstein, Arthur E. and Reid-Edwards, Ronald A. (2014) 'Lattice gerbe theory.', Journal of high energy physics., 2014 (09). 034.

Abstract

We formulate the theory of a 2-form gauge field on a Euclidean spacetime lattice. In this approach, the fundamental degrees of freedom live on the faces of the lattice, and the action can be constructed from the sum over Wilson surfaces associated with each fundamental cube of the lattice. If we take the gauge group to be U(1), the theory reduces to the well-known abelian gerbe theory in the continuum limit. We also propose a very simple and natural non-abelian generalization with gauge group U(N)×U(N), which gives rise to U(N) Yang-Mills theory upon dimensional reduction. Formulating the theory on a lattice has several other advantages. In particular, it is possible to compute many observables, such as the expectation value of Wilson surfaces, analytically at strong coupling and numerically for any value of the coupling.

Item Type:Article
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Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1007/jhep09(2014)034
Publisher statement:© The Author(s) 2014 This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
Date accepted:14 August 2014
Date deposited:14 June 2016
Date of first online publication:04 September 2014
Date first made open access:No date available

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