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  Universal BPS structure of stationary supergravity solutions

Bossard, G., Nicolai, H., & Stelle, K. S. (2009). Universal BPS structure of stationary supergravity solutions. Journal of high energy physics: JHEP, 2009(7): 003. Retrieved from http://arxiv.org/abs/0902.4438.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-6043-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-6045-6
Genre: Journal Article

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0902.4438v1.pdf (Preprint), 829KB
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 Creators:
Bossard, Guillaume1, Author              
Nicolai, Hermann1, Author              
Stelle, K. S., Author
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1Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24014              

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 Abstract: We study asymptotically flat stationary solutions of four-dimensional supergravity theories via the associated G/H* pseudo-Riemannian non-linear sigma models in three spatial dimensions. The Noether charge C associated to G is shown to satisfy a characteristic equation that determines it as a function of the four-dimensional conserved charges. The matrix C is nilpotent for non-rotating extremal solutions. The nilpotency degree of C is directly related to the BPS degree of the corresponding solution when they are BPS. Equivalently, the charges can be described in terms of a Weyl spinor |C > of Spin*(2N), and then the characteristic equation becomes equivalent to a generalisation of the Cartan pure spinor constraint on |C>. The invariance of a given solution with respect to supersymmetry is determined by an algebraic `Dirac equation' on the Weyl spinor |C>. We explicitly solve this equation for all pure supergravity theories and we characterise the stratified structure of the moduli space of asymptotically Taub-NUT black holes with respect with their BPS degree. The analysis is valid for any asymptotically flat stationary solutions for which the singularities are protected by horizons. The H*-orbits of extremal solutions are identified as Lagrangian submanifolds of nilpotent orbits of G, and so the moduli space of extremal spherically symmetric black holes as a Lagrangian subvariety of the variety of nilpotent elements of Lie(G). We also generalise the notion of active duality transformations to an `almost action' of the three-dimensional duality group G on asymptotically flat stationary solutions.

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Language(s): eng - English
 Dates: 2009
 Publication Status: Published online
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 Table of Contents: -
 Rev. Method: -
 Identifiers: eDoc: 402650
Other: arXiv:0902.4438
URI: http://arxiv.org/abs/0902.4438
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Title: Journal of high energy physics : JHEP
Source Genre: Journal
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Publ. Info: Bologna, Italy : Società italiana di fisica
Pages: - Volume / Issue: 2009 (7) Sequence Number: 003 Start / End Page: - Identifier: Other: 111021927548002
Other: 1126-6708