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Generalized gravity from modified DFT

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Title
Generalized gravity from modified DFT
Author(s)
Yuho Sakatani; Shozo Uehara; Kentaroh Yoshida
Publication Date
2017-04
Journal
JOURNAL OF HIGH ENERGY PHYSICS, v., no.4, pp.123 -
Publisher
SPRINGER
Abstract
Recently, generalized equations of type IIB supergravity have been derived from the requirement of classical kappa-symmetry of type IIB superstring theory in the Green-Schwarz formulation. These equations are covariant under generalized T-duality transformations and hence one may expect a formulation similar to double field theory (DFT). In this paper, we consider a modification of the DFT equations of motion by relaxing a condition for the generalized covariant derivative with an extra generalized vector. In this modified double field theory (mDFT), we show that the flatness condition of the modified generalized Ricci tensor leads to the NS-NS part of the generalized equations of type IIB supergravity. In particular, the extra vector fields appearing in the generalized equations correspond to the extra generalized vector in mDFT. We also discuss duality symmetries and a modification of the string charge in mDFT (c) The Authors.
URI
http://pr.ibs.re.kr/handle/8788114/4809
ISSN
1029-8479
Appears in Collections:
Center for Fundamental Theory(순수물리이론 연구단) > Journal Papers (저널논문)
Files in This Item:
10.1007_JHEP04(2017)123.pdfDownload

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