期刊
FORTSCHRITTE DER PHYSIK-PROGRESS OF PHYSICS
卷 61, 期 10, 页码 893-925出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/prop.201300013
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资金
- Padova University [CPDA105015/10]
- MIUR-FIRB [RBFR10QS5J]
Non-geometric frames in string theory are related to the geometric ones by certain local O(D,D) transformations, the so-called -transforms. For each such transformation, we show that there exists both a natural field redefinition of the metric and the Kalb-Ramond two-form as well as an associated Lie algebroid. We furthermore prove that the all-order low-energy effective action of the superstring, written in terms of the redefined fields, can be expressed through differential-geometric objects of the corresponding Lie algebroid. Thus, the latter provides a natural framework for effective superstring actions in non-geometric frames. Relations of this new formalism to double field theory and to the description of non-geometric backgrounds such as T-folds are discussed as well. (C) 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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