Spacelike Singularities and Hidden Symmetries of Gravity
نویسندگان
چکیده
منابع مشابه
Spacelike Singularities and Hidden Symmetries of Gravity
We review the intimate connection between (super-)gravity close to a spacelike singularity (the "BKL-limit") and the theory of Lorentzian Kac-Moody algebras. We show that in this limit the gravitational theory can be reformulated in terms of billiard motion in a region of hyperbolic space, revealing that the dynamics is completely determined by a (possibly infinite) sequence of reflections, whi...
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We present the conformally 1+3 Hubble-normalized field equations together with the general total source equations, and then specialize to a source that consists of perfect fluids with general barotropic equations of state. Motivating, formulating, and assuming certain conjectures, we derive results about how the properties of fluids (equations of state, momenta, angular momenta) and generic spa...
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ژورنال
عنوان ژورنال: Living Reviews in Relativity
سال: 2008
ISSN: 2367-3613,1433-8351
DOI: 10.12942/lrr-2008-1