منابع مشابه
A Model for the Big Bounce
I motivate a proposal for modeling, at weak string coupling, the “Big Bounce” transition from a growing-curvature phase to standard (FRW) cosmology in terms of a pressure-less dense gas of “string-holes” (SH), string states lying on the correspondence curve between strings and black holes. During this phase SH evolve in such a way that temperature and (string-frame) curvature remain O(Ms) and (...
متن کاملRotational inhomogeneities from pre-big bang?
The evolution of the rotational inhomogeneities is investigated in the specific framework of four-dimensional pre-big bang models. While minimal (dilaton-driven) scenarios do not lead to rotational fluctuations, in the case of non-minimal (string-driven) models, fluid sources are present in the pre-big bang phase. The rotational modes of the geometry, coupled to the divergenceless part of the v...
متن کاملColliding Waves on a Brane, the Big Bounce and Reconnection
We present a time-dependent solution of the Nambu-Goto action which represents two colliding waves moving at the speed of light. This solution can be decomposed into two distinct regions with different geometries corresponding to shrinking or expanding brane universe and two colliding branes. The former describes the Big Bounce without singularity while the latter describes that two branes coll...
متن کاملExact Global Solutions of Brane Universes and Big Bounce
Exact global solutions of five-dimensional cosmological models compactified on an S1/Z2 orbifold with two 3-branes are presented in which the matter on the branes is a perfect fluid, the bulk is empty, and no cosmological constants are added in the bulk and on the branes. Unlike previous prediction, the exact solutions turn out to be, at low energy, in agreement with the conventional cosmology ...
متن کاملBig Bounce Genesis and Possible Experimental Tests: A Brief Review
We review the recent status of big bounce genesis as a new possibility of using dark matter particles’ mass and interaction cross-section to test the existence of a bounce universe at the early stage of evolution in our currently-observed universe. To study the dark matter production and evolution inside the bounce universe, called big bounce genesis for short, we propose a model independent ap...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Classical and Quantum Gravity
سال: 2010
ISSN: 0264-9381,1361-6382
DOI: 10.1088/0264-9381/27/5/052001