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D-branes in the Lorentzian Melvin Geometry

Ta-Sheng Tai
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Abstract

We consider string theory on the Lorentzian Melvin geometry, which is obtained by analytically continuing the two-parameter Euclidean Melvin background. Because this model provides a solvable conformal field theory that describes time-dependent twisted string dynamics, we study the string one-loop partition function and the D-brane spectrum. We found that both the wrapping D2-brane and the codimension-one D-string emit winding strings, and this behavior can be traced to the modified open string Hamiltonian on these probe D-branes.

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Ta-Sheng Tai. 2007-03-06. D-branes in the Lorentzian Melvin Geometry. https://doi.org/10.1143/ptp.117.347

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