Non-extremal instantons and wormholes in string theory

被引:28
作者
Bergshoeff, E
Collinucci, A
Gran, U
Roest, D
Vandoren, S
机构
[1] Univ Groningen, Ctr Theoret Phys, NL-9747 AG Groningen, Netherlands
[2] Kings Coll London, Dept Math, London WC2R 2LS, England
[3] Univ Utrecht, Inst Theoret Phys, NL-3508 TD Utrecht, Netherlands
[4] Univ Utrecht, Spinoza Inst, NL-3508 TD Utrecht, Netherlands
来源
FORTSCHRITTE DER PHYSIK-PROGRESS OF PHYSICS | 2005年 / 53卷 / 7-8期
关键词
D O I
10.1002/prop.200410227
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We construct the most general non-extremal spherically symmetric instanton solution of a gravity-dilatonaxion system with SL(2, R) symmetry, for arbitrary euclidean spacetime dimension D >= 3. A subclass of these solutions describe completely regular wormhole geometries, whose size is determined by an invariant combination of the SL(2, R) charges. Our results can be applied to four-dimensional effective actions of type II strings compactified on a Calabi-Yau manifold, and in particular to the universal hypermultiplet coupled to gravity. We show that these models contain regular wormhole solutions, supported by regular dilaton and RR scalar fields of the universal hypermultiplet. (c) 2005 WILEYNCH Verlag GmbH & Co. KGaA, WeinheiM.
引用
收藏
页码:990 / 996
页数:7
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