Results 31 to 40 of about 46,785 (128)

Will quantum cosmology resurrect chaotic inflation model?

, 2016
The single field chaotic inflation model with a monomial power greater than one seems to be ruled out by the recent Planck and WMAP CMB data while Starobinsky model with a higher curvature term seems to be a viable model.
Kim, Sang Pyo, Kim, Won
core   +1 more source

Inflationary cosmology in modified gravity theories

, 2015
We review inflationary cosmology in modified gravity such as $R^2$ gravity with its extensions in order to generalize the Starobinsky inflation model. In particular, we explore inflation realized by three kinds of effects: modification of gravity, the ...
Bamba, Kazuharu, Odintsov, Sergei D.
core   +2 more sources

Topics in Cosmology [PDF]

, 2006
These lectures present a brief review of inflationary cosmology, provide an overview of the theory of cosmological perturbations, and then focus on the conceptual problems of the current paradigm of early universe cosmology, thus motivating an ...
Robert Brandenberger, Robert Brandenberger   +1 more
core   +3 more sources

The warm inflationary universe

, 2008
In the past decade, the importance of dissipation and fluctuation to inflationary dynamics has been realized and has led to a new picture of inflation called warm inflation.
Arjun Berera, Arkani-Hamed N., Berera A., Gliner E., Gunzig E., Kirzhnits D. A., Starobinsky A. A., Taylor A. N., Weiss U.   +8 more
core   +1 more source

Inflationary Cosmology and Quantization Ambiguities in Semi-Classical Loop Quantum Gravity [PDF]

, 2004
In loop quantum gravity, modifications to the geometrical density cause a self-interacting scalar field to accelerate away from a minimum of its potential.
A. Ashtekar, A. Ashtekar, A. Ashtekar, A.D. Linde, C. Rovelli, C. Rovelli, C. Rovelli, D.N. Spergel, David J. Mulryne, G.M. Hossain, H.V. Peiris, James E. Lidsey, K. Krasnov, M. Bojowald, M. Bojowald, M. Bojowald, M. Bojowald, M. Bojowald, M. Bojowald, M. Bojowald, M. Bojowald, M. Bojowald, M.S. Madsen, Martin Bojowald, P. Singh, Parampreet Singh, Reza Tavakol, S. Tsujikawa, T. Thiemann, T. Thiemann, T. Thiemann   +30 more
core   +3 more sources

Axion Cosmology and the Energy Scale of Inflation

, 2010
We survey observational constraints on the parameter space of inflation and axions and map out two allowed windows: the classic window and the inflationary anthropic window.
A. R. Liddle, E. Kolb, Frank Wilczek, M. Turner, Mark P. Hertzberg, Max Tegmark   +5 more
core   +1 more source

Eternal inflation with Liouville cosmology [PDF]

Nuclear Physics B, 2011
32 pages, v2: published version, many ...
openaire   +3 more sources

The New Cosmos [PDF]

, 2002
We review the broad status of cosmology and discuss a model of fluctuational cosmology in which the universe is created in a phase transition like phenomenon mimicking inflation, and which further consistently explains latest observations like the ever ...
B.G. Sidharth, El Naschie, El Naschie, El Naschie, El Naschie, El Naschie, Freedman, Goodstein, Kirshner, Linde, Maggiore, Misner, Perlmutter, Ruffini, Sidharth, Sidharth, Sidharth, Sidharth, Sidharth, Sidharth, Sidharth, Sidharth, Sidharth, Sidharth, Webb, Webb, Weinberg, Weinberg, Zee   +28 more
core   +3 more sources

Cosmological parameters in noncommutative inflation [PDF]

Physics Letters B, 2004
We investigate how the uncertainty of noncommutative spacetime could explain the WMAP data. For this purpose, the spectrum is divided into the IR and UV region. We introduce a noncommutative parameter of $ _0$ in the IR region and a noncommutative parameter of $ _0$ in the UV region.
openaire   +3 more sources

Inflation and String Cosmology

, 2005
After 25 years of its existence, inflationary theory gradually becomes the standard cosmological paradigm. However, we still do not know which of the many versions of inflationary cosmology will be favored by the future observational data.
Linde, Andrei
core   +1 more source