Results 41 to 50 of about 32,779 (246)

Post-inflationary brane cosmology [PDF]

, 2001
The brane cosmology has invoked new challenges to the usual Big Bang cosmology. In this paper we present a brief account on thermal history of the post-inflationary brane cosmology. We have realized that it is not obvious that the post-inflationary brane
Affleck, Akama, Antoniadis, Anupam Mazumdar, Arkani-Hamed, Banks, Banks, Barreiro, Bastero-Gil, Benakli, Benakli, Binetruy, Binetruy, Caceres, Choi, Choi, Chung, Cline, Cline, Cline, Copeland, Coughlan, de Carlos, Dine, Dine, Ellis, Ellis, Ellis, Ellis, Fayet, Fukugita, Gherghetta, Giudice, Giudice, Giudice, Horava, Horava, Kallosh, Kawasaki, Kofman, Kofman, Kolb, Lalak, Linde, Lukas, Lukas, Lyth, Maartens, Maroto, Mazumdar, Mazumdar, Mendes, Pagels, Randall, Rubakov, Sarkar, Scherrer, Shakarov, Shatanov, Shiromizu, Stewart, Traschen, Weinberg, Witten   +63 more
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INFLATIONARY COSMOLOGY FROM NONCOMMUTATIVE GEOMETRY [PDF]

International Journal of Modern Physics A, 1996
In the framework of the Connes-Lott model based on noncommutative geometry, the basic features of a gauge theory in the presence of gravity are reviewed, in order to show the possible physical relevance of this scheme for inflationary cosmology. These models naturally contain at least two scalar fields, interacting with each other whenever more than ...
LIZZI F, MANGANO G, MIELE, GENNARO, SPARANO G.   +3 more
openaire   +5 more sources

Testing time-delayed cosmology

European Physical Journal C: Particles and Fields, 2022
Inspired by nonlocal gravity theories, time-delayed cosmology proposes a delayed Friedmann equation that generically predicts an inflationary period with a natural end.
C. J. Palpal-latoc, Reginald Christian Bernardo, Ian Vega   +2 more
doaj   +1 more source

CHARLES SANDERS PEIRCE AND THE PLACE OF CHAOS IN THE NEW WORLD ORDER [PDF]

Filozofia i Nauka
This article examines the main ideas of the metaphysics of the prominent American logician and philosopher Charles Sanders Peirce. It is shown that a significant part of his „scientific metaphysics” is evolutionary cosmology, characterized, in particular,
Volodymyr Ratnikov
doaj   +1 more source

Early and late universe holographic cosmology from a new generalized entropy

Physics Letters B, 2022
We propose a new four-parameter entropy function that generalizes the Tsallis, Rényi, Barrow, Sharma-Mittal, Kaniadakis and Loop Quantum Gravity entropies for suitable limits of the parameters.
Shin'ichi Nojiri, Sergei D. Odintsov, Tanmoy Paul   +2 more
doaj   +1 more source

Cosmology on a Three-Brane [PDF]

, 2000
In this paper a general solution is found for a five dimensional orbifold spacetime that induces a $k=0$ cosmology on a three-brane. Expressions for the energy density and pressure on the brane in terms of the brane metric are derived.
Anchordoqui L, Antoniadis I, Arkani-Hamed N, Arkani-Hamed N, Benakli K, Binétruy P, Binétruy P, Cline J, Csáki C, Csáki C, Csáki C, Cullen S, Dan N Vollick, Dvali G, Flanagan E E, Hall L J, Hawking S W, Horava P, Horava P, Israel W, Israel W, Kaloper N, Kaloper N, Kim J, Lucas A, Lucas A, Lucas A, Lucas A, Maartens R, Mohapatra R N, Mukohyama S, Nihei T, Nojiri S, Nojiri S, Randall L, Randall L, Shiromizu T   +36 more
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Hybrid Loop Quantum Cosmology: An Overview

Frontiers in Astronomy and Space Sciences, 2021
Loop Quantum Gravity is a nonperturbative and background independent program for the quantization of General Relativity. Its underlying formalism has been applied successfully to the study of cosmological spacetimes, both to test the principles and ...
Beatriz Elizaga Navascués, Guillermo A. Mena Marugán   +1 more
doaj   +1 more source

String cosmology versus standard and inflationary cosmology

, 2000
This paper presents a review of the basic, model-independent differences between the pre-big bang scenario, arising naturally in a string cosmology context, and the standard inflationary scenario.
't Hooft G, Alvarez E, Banks T, Bennet C, Buonanno A, Cartier C, Cavaglià M, Clancy D, Clancy D, Durrer R, Easson D A, Ellis G F R, Fenstein A, Fenstein A, Gasperini M, Gasperini M, Gasperini M, Gasperini M, Gasperini M, Gasperini M, Gasperini M, Gasperini M, Gasperini M, Gasperini M, Gasperini M, Gasperini M, Gasperini M, Gasperini M, Gasperini M, Gasperini M, Grishchuk L P, Guth A, Kaloper N, Kaloper N, Kiritsis E, Kolb E W, Lidsey J E, Lidsey J E, Linde A, Linde A D, Linde A D, Linde A D, M Gasperini, Meissner K A, Pollock M D, Shadev D, Starobinski A A, Tseytlin A A, Veneziano G, Veneziano G, Weinberg S, Wheeler J A, Witten E, Zel'dovich Y   +53 more
core   +1 more source

Constraining auto-interaction terms in α-attractor supergravity models of inflation [PDF]

, 2017
The inflationary mechanism has become the paradigm of modern cosmology over the last thirty years. However, there are several aspects of inflationary physics that are still to be addressed, like the shape of the inflationary potential.
Cabella, P., Di Marco, A., Vittorio, N.
core   +1 more source

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
core   +1 more source