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Excision of singularities by stringy domain walls

Kallosh, Renata and Mohaupt, Thomas and Shmakova, Marina (2001) Excision of singularities by stringy domain walls. Journal of Mathematical Physics, 42 (7). pp. 3071-3081. ISSN 0022-2488. doi:10.1063/1.1373424.

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We study supersymmetric domain walls on S1/Z2 orbifolds. The supergravity solutions in the bulk are given by the attractor equation associated with Calabi–Yau (CY) spaces and have a naked space–time singularity at some |ys|. We are looking for possibilities to cut off this singularity with the second wall by a stringy mechanism. We use the collapse of the CY cycle at |yc| which happens before and at a finite distance from the space–time singularity. In our example with three Kähler moduli the second wall is at the end of the moduli space at |yc| where also the enhancement of SU(2) gauge symmetry takes place so that |ye| = |yc|<|ys|. The physics of the excision of a naked singularity via the enhançon in the context of domain wall has an interpretation on the heterotic side related to R-->1/R duality. The position of the enhançon is given by the equation R(|ye|) = 1.

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Additional Information:©2001 American Institute of Physics. (Received 2 January 2001; accepted 13 February 2001) We are very grateful to I. Antoniadis, S. Dimopoulos, S. Kachru, A. Linde, E. Silverstein, L. Susskind, and N. Toumbas for useful discussions. T.M. would like to thank Y. Zunger for help in using Mathematica. This work was supported by NSF Grant No. PHY-9870115.
Subject Keywords:supergravity; superstrings; black holes; SU(2) theory; supersymmetry
Issue or Number:7
Record Number:CaltechAUTHORS:KALjmp01
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:1321
Deposited By: Archive Administrator
Deposited On:10 Jan 2006
Last Modified:08 Nov 2021 19:09

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