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arXiv · hep-th/9403048

Field Redefinitions in String Theory as a Solution Generating Technique

Nemanja Kaloper
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Abstract

The purpose of this work is to show that there exists an additional invariance of the $β$-function equations of string theory on $d+1$-dimensional targets with $d$ toroidal isometries. It corresponds to a shift of the dilaton field and a scaling of the lapse function, and is reminiscent of string field redefinitions. While it preserves the form of the $β$-function equations, it changes the effective action and the solutions. Thus it can be used as a solution generating technique. It is particularly interesting to note that there are field redefinitions which map solutions with non-zero string cosmological constant to those with zero cosmological constant. Several simple examples involving two- and three-dimensional black holes and black strings are provided to illustrate the role of such field redefinitions.

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Nemanja Kaloper. 1994-03-08. Field Redefinitions in String Theory as a Solution Generating Technique. https://doi.org/10.1016/0370-2693(94)00988-0

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