The tale of gravitational sphaleron

Mikhail S. Volkov

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arXiv · hep-th/0002006

The tale of gravitational sphaleron

Mikhail S. Volkov

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Abstract

Type I string theory can be dimensionally reduced on group manifolds. The compactification on $S^3\times S^3$ leads to the N=4 gauged SU(2)$\times$SU(2) supergravity in four dimensions, which admits the BPS monopole type non-Abelian vacuum. The reduction on $S^3\times AdS_3$ gives the Euclidean N=4 gauged SU(2)$\times$SU(1,1) supergravity admitting a globally regular supersymmetric non-Abelian background. The latter can be analytically continued to the Lorentzian sector, which gives the regular, unstable particle-like configuration known as gravitational sphaleron. When lifted to D=10, the Euclidean vacuum describes a deformation of the D1--D5 brane system.

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Mikhail S. Volkov. 2000-02-01. The tale of gravitational sphaleron. https://arxiv.org/abs/hep-th/0002006

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