On some properties of the attractor equations

被引：52

作者：

Bellucci, S

Ferrara, S

Marrani, A

机构：

[1] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[2] CERN, Dept Phys, Theory Unit, CH-1211 Geneva 23, Switzerland

[3] Museo Storico Fis & Ctr Studi Ric Enrico Fermi, I-00184 Rome, Italy

来源：

PHYSICS LETTERS B | 2006年 / 635卷 / 2-3期

关键词：

D O I：

10.1016/j.physletb.2006.02.053

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss the attractor equations of N = 2, d = 4 supergravity in an extremal black hole background with arbitrary electric and magnetic fluxes (charges) for field-strength two-forms. The effective one-dimensional Lagrangian in the radial (evolution) variable exhibits features of a spontaneously broken supergravity theory. Indeed, non-BPS attractor solutions correspond to the vanishing determinant of a (fermionic) gaugino mass matrix. The stability of these solutions is controlled by the data of the underlying special Kahler geometry of the vector multiplets' moduli space. Finally, after analyzing the 1-modulus case more in detail, we briefly comment on the choice of the Kahler gauge and its relevance for the recently discussed entropic functional. (c) 2006 Published by Elsevier B.V.

引用

页码：172 / 179

页数：8

共 29 条

[1] N = 2 supergravity and N = 2 super Yang-Mills theory on general scalar manifolds: Symplectic covariance, gaugings and the momentum map [J].