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Effective string theory simplified
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DOI：10.1007/JHEP09(2014)183.png)
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Abstract
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In this note we simplify the formulation of the Poincare-invariant effective string theory in D dimensions by adding an intrinsic metric and embedding its dynamics into the Polyakov formalism. We use this formalism to classify operators order-by-order in the inverse physical length of the string, in a fully gauge-invariant framework. We then use this classification to analyze the universality and nonuniversality of observables, up to and including the second sub-leading order in the long string expansion.
Keywords:
Bosonic Strings
Long strings
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