Pre-Big Bang, fundamental Physics and noncyclic cosmologies
نویسندگان
چکیده
منابع مشابه
A Simple/short Introduction to Pre-big-bang Physics/cosmology
A simple, non-technical introduction to the pre-big bang scenario is given, emphasizing physical motivations, considerations, and consequences over formalism.
متن کاملHYBRID ARTIFICIAL PHYSICS OPTIMIZATION AND BIG BANG-BIG CRUNCH ALGORITHM (HPBA) FOR SIZE OPTIMIZATION OF TRUSS STRUCTURES
Over the past decades, several techniques have been employed to improve the applicability of the metaheuristic optimization methods. One of the solutions for improving the capability of metaheuristic methods is the hybrid of algorithms. This study proposes a new optimization algorithm called HPBA which is based on the hybrid of two optimization algorithms; Big Bang-Big Crunch (BB-BC) inspired b...
متن کاملPre-Big Bang Cosmology and Quantum Fluctuations
In the framework of string theory, the Pre-Big Bang scenario [1,2] provides an alternative to the standard inflationary paradigm. In the Pre-Big Bang model 1 the inflationary solutions, driven by the kinetic energy of the dilaton, emerge naturally via the duality symmetries of string theory. It has, however, been argued [3] that, even though the two classical moduli of the open (K = −1), homoge...
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 کاملSome Aspects of Pre Big Bang Cosmology
This is a summary of a course given at the Fourth Mexican School on Gravitation and Mathematical Physics on some aspects of PBB cosmology. After introductory remarks the lectures concentrate on some amusing consequences derived from the symmetries of the string theory with respect to such classical concepts as isotropy and homogeneity. The extra dimensions and the symmetries of the M theory are...
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: EPJ Web of Conferences
سال: 2014
ISSN: 2100-014X
DOI: 10.1051/epjconf/20147000035