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arXiv 0903.3771hep-thgr-qcmath-phmath.MPnlin.SI
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G/H ^{*} Lax系统的幂零轨道的积分算法:极值黑洞

The Integration Algorithm for Nilpotent Orbits of G/H^{*} Lax systems: for Extremal Black Holes

Pietro Fre, Alexander S. Sorin

摘要:

据此,我们完成了Lax系统的可积性的证明,基于伪黎曼陪集流形G/H ^{*},我们最近在以前的论文中提出[arXiv:0903.2559]。超重力球对称黑洞解已被证明对应于这类流形中的测地线,在我们以前的文章中,我们给出了这类微分系统的Liouville可积性的证明,积分算法,并讨论了它们的模空间的轨道结构。在这个模空间中存在一个奇异尖点轨迹,需要单独构造。这个轨迹包含对应于极值黑洞的幂零Lax算子的轨道。在这里,我们内在地刻画这样的轨迹的哈密顿方面,我们提出了完全集成算法的幂零Lax运营商。该算法是有限的,不需要限制程序,它是唯一定义的初始数据。对于SL(3; R)/SO(1,2)陪集,我们给出了所有正则和奇异轨道的详尽分类,从而提供了这种情况的一般解。最后,我们表明,我们的集成算法可以推广到一般的非对角化(特别是幂零)Lax矩阵不一定与对称空间。

英文摘要:

Hereby we complete the proof of integrability of the Lax systems, based on pseudo-Riemannian coset manifolds G/H^{*}, we recently presented in a previous paper [arXiv:0903.2559]. Supergravity spherically symmetric black hole solutions have been shown to correspond to geodesics in such manifolds and, in our previous paper, we presented the proof of Liouville integrability of such differential systems, their integration algorithm and we also discussed the orbit structure of their moduli space in terms of conserved hamiltonians. There is a singular cuspidal locus in this moduli space which needs a separate construction. This locus contains the orbits of Nilpotent Lax operators corresponding to extremal Black Holes. Here we intrinsically characterize such a locus in terms of the hamiltonians and we present the complete integration algorithm for the Nilpotent Lax operators. The algorithm is finite, requires no limit procedure and it is solely defined in terms of the initial data. For the SL(3;R)/SO(1,2) coset we give an exhaustive classification of all orbits, regular and singular, so providing general solutions for this case. Finally we show that our integration algorithm can be generalized to generic non-diagonalizable (in particular nilpotent) Lax matrices not necessarily associated with symmetric spaces.

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