Higher order conformal invariance of string backgrounds obtained by O(d, d) transformations
نویسندگان
چکیده
منابع مشابه
From trivial to non-trivial conformal string backgrounds via O (d, d) transformations
Target-space duality is the statement [ 1,2 ] that two (more generally a finite number of ) apparently different string theories actually coincide after a suitable relabelling of states and operators. Thus, for instance, a closed string moving on a circle of radius R is equivalent to one moving on a circle of radius ec ' /R . This is known as R duality. The study of classical propagation in non...
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Generalizing our previous work, we show how O(d, d) transformations can be used to " boost away " in new dimensions the physical singularities that occur generically in cosmological and/or black-hole conformal string backgrounds. As an example, we show how a recent model by Nappi and Witten can be made singularity-free via O(3, 3) boosts involving a fifth dimension.
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Generalizing our previous work, we show how O(d; d) transformations can be used to "boost away" in new dimensions the physical singularities that occur generically in cosmological and/or black-hole conformal string backgrounds. As an example, we show how a recent model by Nappi and Witten can be made singularity-free via O(3; 3) boosts involving a fth dimension.
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1992
ISSN: 0370-2693
DOI: 10.1016/0370-2693(92)91923-w