Five-brane thresholds and membrane instantons in four-dimensional heterotic M-theory

被引:9
作者
Carlevaro, L [1 ]
Derendinger, JP [1 ]
机构
[1] Univ Neuchatel, Inst Phys, CH-2000 Neuchatel, Switzerland
关键词
D O I
10.1016/j.nuclphysb.2005.11.019
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
The effective four-dimensional supergravity of M-theory compactified on the orbifold S-1/Z(2) and a Calabi-Yau threefold includes in general moduli supermultiplets describing massless modes of five-branes. For each brane, one of these fields corresponds to fluctuations along the interval. The five-brane also leads to modifications of the anomaly-cancelling terms in the eleven-dimensional theory, including gauge contributions located on their world-volumes. We obtain the interactions of the brane "interval modulus" predicted by these five-brane-induced anomaly-cancelling terms and we construct their effective supergravity description. In the condensed phase, these interaction terms generate an effective non-perturbative superpotential which can also be interpreted as instanton effects of open membranes stretching between five-branes and the S-1/Z(2) fixed hyperplanes. Aspects of the vacuum structure of the effective supergravity are also briefly discussed. (c) 2005 Elsevier B.V. All rights reserved.
引用
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页码:1 / 33
页数:33
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