Symmetric points in the landscape as cosmological attractors
نویسندگان
چکیده
منابع مشابه
The Structure of Symmetric Attractors
We consider discrete equivariant dynamical systems and obtain results about the structure of attractors for such systems. We show, for example, that the symmetry of an attractor cannot, in general, be an arbitrary subgroup of the group of symmetries. In addition, there are group-theoretic restrictions on the symmetry of connected components of a symmetric attractor. The symmetry of attractors h...
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3. Lecture III: Stable ergodicity of skew extensions Let f be a diieomorphism of the compact Riemannian manifold M. We say f is partially hyperbolic 9] if there is a continuous Tf-invariant splitting such that Tf expands E u , contracts E s and sup kT s p fk < inf m(T c p f); sup kT c p fk < inf m(T u p f): (Here m(A) = kA ?1 k ?1 .) If the center bundle E c is tangent to a C 1-foliation F of M...
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The Lyapunov exponents of symmetric attractors can be forced to be multiple by “instantaneous symmetries” which fix the attractor pointwise. In this paper, we show that “symmetries on average” which fix the attractor as a set may lead to further multiplicities. This work is motivated by, and provides an explanation for, numerical computations by Aston & Laing of Lyapunov exponents for the compl...
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The attractor mechanism for supersymmetric (BPS) black holes was discovered in 1995 [1]: at the horizon of a supersymmetric black hole, the moduli are completely determined by the charges of the black hole, independent of their asymptotic values. In 2005, Sen showed that all extremal black holes, both supersymmetric and non-supersymmetric (non-BPS), exhibit attractor behavior [2]: it is a resul...
متن کاملOn symmetric attractors in reversible dynamical systems
Let ? O(n) be a nite group acting orthogonally on IR n. We say that ? is a reversing symmetry group of a homeomorphism, diieomorphism or ow f t : IR n 7 ! IR n (t 2 Z Z or t 2 IR) if ? has an index two subgroup ~ ? whose elements commute with f t and for all elements 2 ? ? ~ ? and all t , f t (x) = f ?t (x). We give necessary group and representation theoretic conditions for subgroups of revers...
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2009
ISSN: 1029-8479
DOI: 10.1088/1126-6708/2009/12/013