Investigating Brane Resolution With Perturbative Dynamics

Details Investigating Brane Resolution With Perturbative Dynamics Investigating Brane Resolution With Perturbative Dynamics

2001-10-09

arxiv.org/abs/hep-th/0110085v2

JHEP 0203:008,2002

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, LaTeX, references added

Scientific paper

10.1088/1126-6708/2002/03/008

We investigate the transition between singular and non-singular geometries from the vantage point of perturbative field dynamics. In particular, we obtain the closed-form absorption probability for minimally-coupled massless scalars propagating in the background of a heterotic 5-brane on a Taub-NUT instanton. This is an exact calculation for arbitrary incident frequencies. For the singular geometry, the absorption probability vanishes when the frequency is below a certain threshold, and for the non-singular case it vanishes for all frequencies. We discuss the connection between this phenomenon and the behavior of geodesics in this background. We also obtain exact quasinormal modes.

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