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Wilson loops and topological phases in closed string theory

R. Cartas-Fuentevilla
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Abstract

Using covariant phase space formulations for the natural topological invariants associated with the world-surface in closed string theory, we find that certain Wilson loops defined on the world-surface and that preserve topological invariance, correspond to wave functionals for the vacuum state with zero energy. The differences and similarities with the 2-dimensional QED proposed by Schwinger early are discussed.

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R. Cartas-Fuentevilla. 2004-11-27. Wilson loops and topological phases in closed string theory. https://doi.org/10.1007/s10773-006-9088-1

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