Canonical Description of T-duality for Fundamental String and D1-Brane and Double Wick Rotation

Abstract

We study T-duality transformations in canonical formalism for Nambu-Gotto action. Then we investigate the relation between world-sheet double Wick rotation and sequence of target space T-dualities and Wick rotation in case of fundamental string and D1-brane.

22 pages, v2:minor corrections

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