Results 101 to 110 of about 115,765 (198)

Quantum Cosmology Lectures [PDF]

, 1995
Quantum cosmology is the quantum theory of the entire universe. Although strange at first sight, it is appropriate because (1) our world appears to be fundamentally quantum, (2) the classical description of gravity breaks down at singularities it would ...
Page, Don N.
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A DISCOURSE ANALYSIS THROUGH CORPUS LINGUISTICS ON THE CASE OF POPULAR SCIENCE BOOK THE GRAND DESIGN

Kajian Linguistik dan Sastra, 2016
This study aims to discover the theme of popular physics book, The Grand Design, through corpus linguistics and discourse analysis as well as how the authors of the book describe the field of study which in fact is not their main focus to work on.
Rosita Masfirotul Uyun
doaj   +1 more source

General covariant transition amplitudes in quantum cosmology

, 2011
The path-integral approach to cosmology consists in the computation of transition amplitudes between states of the quantum geometry of the universe.
Vidotto, Francesca
core   +1 more source

On the Hamiltonian Constraint of Loop Quantum Cosmology

, 2005
In this paper we construct the Hamiltonian constraint operator of loop quantum cosmology using holonomies defined for arbitrary irreducible SU(2) representations labeled by spin J.
A. Ashtekar, C. Rovelli, Kevin Vandersloot, L. Smolin, M. Bojowald, T. Thiemann   +5 more
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Quantum quintom cosmology

Journal of Cosmology and Astroparticle Physics
Abstract This work applies the principles of quantum cosmology to examine models incorporating a quintom field. Specifically, three distinct models are analyzed: a simplified toy model, a model featuring an exponential quintom potential, and one where the quintom field is coupled with a negative cosmological constant. For each case,
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Unconventional Cosmology

, 2012
I review two cosmological paradigms which are alternative to the current inflationary scenario. The first alternative is the "matter bounce", a non-singular bouncing cosmology with a matter-dominated phase of contraction.
A. Ashtekar, A. Borde, A. Cerioni, A. Kehagias, A. Nayeri, A. Stewart, A. Vilenkin, A.A. Starobinsky, A.A. Starobinsky, A.A. Tseytlin, A.A. Tseytlin, A.H. Guth, B. Feng, B. Feng, B. Greene, B. Grinstein, C. Kiefer, C. Kounnas, C. Lin, C.L. Bennett, C.P. Burgess, D. Wands, D.A. Easson, D.H. Lyth, D.H. Lyth, D.H. Lyth, E. Witten, E.I. Buchbinder, E.J. Copeland, E.R. Harrison, F. Finelli, F.C. Adams, F.L. Bezrukov, G. Veneziano, G.B. Cleaver, G.F.R. Ellis, H. Li, J. Karouby, J. Karouby, J. Khoury, J. Khoury, J. Kripfganz, J. Martin, J. Polchinski, J.C. Hwang, J.C. Niemeyer, J.C. Niemeyer, J.K. Erickson, J.M. Bardeen, J.M. Cline, J.M. Maldacena, K. Hotta, K. Sato, L. Kofman, L. Levasseur Perreault, L.P. Grishchuk, M. Bojowald, M. Gasperini, M. Novello, M. Sakellariadou, M. Sasaki, M.A.R. Osorio, M.B. Hindmarsh, N. Deo, N. Deruelle, N. Kaiser, N. Kaloper, N.D. Birrell, P. Creminelli, P. Creminelli, P. Horava, P. Martineau, P.J. Steinhardt, P.J.E. Peebles, R. Brandenberger, R. Brandenberger, R. Brandenberger, R. Brandenberger, R. Brandenberger, R. Brout, R. Danos, R. Durrer, R. Easther, R. Hagedorn, R.A. Sunyaev, R.H. Brandenberger, R.H. Brandenberger, R.H. Brandenberger, R.H. Brandenberger, R.H. Brandenberger, R.H. Brandenberger, R.H. Brandenberger, R.H. Brandenberger, R.H. Brandenberger, R.H. Brandenberger, R.H. Brandenberger, R.H. Brandenberger, R.H. Brandenberger, R.H. Brandenberger, R.H. Brandenberger, R.J. Danos, R.J. Danos, R.J. Danos, S. Amsel, S. Arapoglu, S. Shankaranarayanan, S. Watson, S. Watson, S. Watson, S.P. Patil, S.P. Patil, S.W. Hawking, T. Battefeld, T. Biswas, T. Boehm, T. Qiu, V. Mukhanov, V.A. Belinsky, V.A. Rubakov, V.F. Mukhanov, V.F. Mukhanov, V.F. Mukhanov, V.N. Lukash, W. Press, X. Chen, X. Gao, X. Gao, Y. Cai, Y. Cai, Y.B. Zeldovich, Y.F. Cai, Y.F. Cai, Y.F. Cai, Y.F. Cai, Y.F. Cai, Y.F. Cai, Y.F. Cai   +136 more
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Gravitational Fluctuations as an Alternative to Inflation

Universe, 2019
The ability to reproduce the observed matter power spectrum P ( k ) to high accuracy is often considered as a triumph of inflation. In this work, we explore an alternative explanation for the power spectrum based on nonperturbative quantum field ...
Herbert W. Hamber
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The Principle of Phase Transition Cosmology: The Current Universe Formed by the Evolution of Two-Component Quantum Superfluid

Reports in Advances of Physical Sciences
This paper aims to demonstrate that modern cosmology has overlooked the systematic and holistic aspects of the universe’s evolution. It is based on the notion that the primordial universe comprised a two-component quantum superfluid and a synthesis of ...
Xiaodong Yang, Yuchen Yang, Zhen Luo, Yuanbo Bi   +3 more
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New ekpyrotic quantum cosmology

Physics Letters B, 2015
Ekpyrotic instantons describe the emergence of classical contracting universes out of the no-boundary quantum state. However, up to now these instantons ended in a big crunch singularity.
Jean-Luc Lehners
doaj   +1 more source

Quantum Cosmology

Invited contribution to the Encyclopedia of Mathematical Physics (2nd edition), providing an overview over some main ideas and results in quantum cosmology. Key points: Canonical quantisation of homogeneous, isotropic cosmology; discussion of ambiguities in this quantisation; Construction of explicit solutions, attempts at physical interpretation ...
Philippakis, Theodore, Raptis, George
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