Proper time formalism and gauge invariance in open string interactions
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Publication:2727876
DOI10.1142/S0217732394001520zbMATH Open1021.81768arXivhep-th/9309015OpenAlexW3104814503MaRDI QIDQ2727876
Publication date: 31 July 2001
Published in: Modern Physics Letters A (Search for Journal in Brave)
Abstract: The issue of gauge invariances in the sigma model formalism is discussed at the free and interacting level. The problem of deriving gauge invariant interacting equations can be addressed using the proper time formalism. This formalism is discussed, both for point particles and strings. The covariant Klein Gordon equation arises in a geometric way from the boundary terms. This formalism is similar to the background independent open string formalism introduced by Witten.
Full work available at URL: https://arxiv.org/abs/hep-th/9309015
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