Comments on Lumps from RG flows
arXiv:1105.6057 · doi:10.1007/JHEP11(2011)092
Abstract
In this note we investigate the proposal of Ellwood and one of the authors et al. to construct a string field theory solution describing the endpoint of an RG flow from a reference BCFT to a target BCFT*. We show that the proposed class of solutions suffers from an anomaly in the equations of motion. Nevertheless, the gauge invariant action exactly reproduces the expected shift in energy.
30 pages, 1 eps figure. V2: 40 pages 3 figures, presentation expanded, energy and closed string tadpole computations extended to more general class of solutions
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