Results 141 to 150 of about 550,111 (273)
Eternal Inflation, past and future [PDF]
arXiv, 2007 Cosmological inflation, if it occurred, radically alters the picture of the `big bang', which would merely point to reheating at the end of inflation. Moreover, this reheating may be only local, so that inflation continues elsewhere and forever, continually spawning big-bang-like regions.
arxiv
The victims' shoes trope and emerging solidarity in political protest
Nations and Nationalism, Volume 31, Issue 1, Page 64-78, January 2025.Abstract By providing an overview of the rich and surprising ways in which the victims' shoes trope becomes utilised in political protests as the focus of interaction ritual chains, this article elaborates on the three distinct ways through which moral communities of solidarity position themselves.
Lea David
wiley +1 more source
Is Eternal Inflation Eternal? [PDF]
arXiv, 2011 In this paper we explore the relationship between the existence of eternal inflation and the initial conditions leading to inflation. We demonstrate that past and future completion of inflation is related, in that past-incomplete inflation can not be future eternal.
arxiv
Quantum Cosmology of Quadratic f(R) Theories with a FRW Metric
Advances in Mathematical Physics, 2017 We study the quantum cosmology of a quadratic fR theory with a FRW metric, via one of its equivalent Horndeski type actions, where the dynamic of the scalar field is induced.
V. Vázquez-Báez, C. Ramírez
doaj +1 more source
Quadratic Chaotic Inflation from Higgs Inflation [PDF]
arXiv, 2014 Stimulated with the recent discovery of B-mode by BICEP2, we discuss the relation between a Higgs inflation and a chaotic inflation with quadratic potential. Starting with a generalized Higgs inflation model, we derive a condition for obtaining the quadratic chaotic inflation.
arxiv
Cosmological Inflation: A Personal Perspective [PDF]
, 2008 13 pages, 3 figures. Text based on a public lecture presented at the Academy of Athens within the activities of the Symposium "Chaos in Astronomy 2007", held in Athens Greece in September ...
openaire +3 more sources
Fundamental forces and scalar field dynamics in the early universe
Physics Letters B, 2020 Scalar weak gravity conjectures (SWGCs) attempt to pinpoint the ranges of couplings consistent with a fundamental theory of all interactions. We identify a generic dynamical consequence of these conjectures for cosmology and show that SWGCs imply a ...
Alexander Kusenko +3 more
doaj
Primordial Gravitational Waves and Reheating in a New Class of Plateau-Like Inflationary Potentials
Universe, 2018 We study a new class of inflation model parametrized by the Hubble radius, such that aH∝exp(−αφ)n. These potentials are plateau-like, and reduce to the power-law potentials in the simplest case n=2.
Siri Chongchitnan
doaj +1 more source
Introductory review of cosmic inflation [PDF]
arXiv, 2003 These lecture notes provide an introduction to cosmic inflation. In particular I will review the basic concepts of inflation, generation of density perturbations, and reheating after inflation.
arxiv
Cosmological Inflation and the Nature of Time [PDF]
, 1996 19 pages, self-unpacking, uuencoded, gz-compressed postscript file, in Proceedings of the International School of Astrophysics, ``D.
openaire +3 more sources