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Article overview
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Old Dualities and New Anomalies | | Roberto Bonezzi
; Felipe Diaz-Jaramillo
; Olaf Hohm
; | | Date: |
14 Aug 2020 | | Abstract: | We revisit the question whether the worldsheet theory of a string admits a
global O(d,d) symmetry. We consider the truncation of the target space theory
in which fields are independent of d coordinates, which is O(d,d,R) invariant.
The worldsheet theory is not O(d,d,R) invariant, unless it is truncated by
setting winding and center-of-mass momenta to zero. We prove consistency of
this truncation and give a manifestly O(d,d,R) invariant action, generalizing a
formulation due to Tseytlin by including all external and internal target space
fields. It is shown that, due to chiral bosons, this symmetry is anomalous. The
anomaly is cancelled by a Green-Schwarz mechanism that utilizes the external
B-field. | | Source: | arXiv, 2008.06420 | | Services: | Forum | Review | PDF | Favorites | |
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