## Abstract We review recent results in the study of attractor horizon geometries (with non‐vanishing Bekenstein‐Hawking entropy) of dyonic extremal d = 4 black holes in supergravity. We focus on 𝒩 = 2, d = 4 ungauged supergravity coupled to a number n~V~ of Abelian vector multiplets, outlining the
✦ LIBER ✦
Attractors and quasi-attractors of a flow
✍ Scribed by Chunyan Zuo; Xiaoxia Wang
- Publisher
- Springer-Verlag
- Year
- 2007
- Tongue
- English
- Weight
- 138 KB
- Volume
- 23
- Category
- Article
- ISSN
- 1598-5865
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In this paper, a necessary and sufficient condition for an invariant subset of a flow to be an attractor is given. At the same time a criterion for the existence of strongly gradient-like flows is also given.