Big-bounce genesis
نویسندگان
چکیده
منابع مشابه
Big 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...
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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 (...
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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...
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We consider a five-dimensional Ricci flat Bouncing cosmology and assume that the fourdimensional universe is permeated smoothly by three minimally coupled matter components: CDM+baryons ρm, radiation ρr and dark energy ρx. Evolutions of these three components are studied and it is found that dark energy dominates before the bounce, and pulls the universe contracting. In this process, dark energ...
متن کاملDirect dark matter searches - Test of the Big Bounce Cosmology
Abstract. We consider the possibility of using dark matter particle’s mass and its interaction cross section as a smoking gun signal of the existence of a Big Bounce at the early stage in the evolution of our currently observed universe. A study of dark matter production in the pre-bounce contraction and the post bounce expansion epochs of this universe reveals a new venue for achieving the obs...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2014
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.90.123535