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Two loop beta function for the generalized bosonic sigma model

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DOI: 10.1016/0370-2693(87)90622-8
OAI: oai:inspirehep.net:245803
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INSPIRE-HEP
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Abstract

We independently compute: (i) the order α′ terms in the effective action for the massless fields in the Bose string theory and (ii) the two-loop β-function in the corresponding two-dimensional σ-model. It is proved that the “massless string fields equations of motion equal the σ-model Weyl invariance conditions” conjecture is true to the given order

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