Results 11 to 20 of about 416,864 (290)

Inflation and Fractional Quantum Cosmology [PDF]

Fractal and Fractional, 2022
The Wheeler–DeWitt equation for a flat and compact Friedmann–Lemaître–Robertson–Walker cosmology at the pre-inflation epoch is studied in the contexts of the standard and fractional quantum cosmology.
Seyed Meraj Mousavi Rasouli, Emanuel W. de Oliveira Costa, Paulo Moniz, Shahram Jalalzadeh   +3 more
doaj   +4 more sources

Constraining barrow entropy-based cosmology with power-law inflation [PDF]

European Physical Journal C: Particles and Fields, 2023
We study the inflationary era of the Universe in a modified cosmological scenario based on the gravity-thermodynamics conjecture with Barrow entropy instead of the usual Bekenstein–Hawking one.
G. G. Luciano
doaj   +4 more sources

Inflation in loop quantum cosmology [PDF]

Physical Review D, 2019
18 pages, 6 tables.
Bhardwaj, Anshuman, Copeland, Edmund J., Louko, Jorma   +2 more
openaire   +4 more sources

Recent Developments in Warm Inflation [PDF]

Universe, 2023
Warm inflation, its different particle physics model implementations, and the implications of dissipative particle production for its cosmology are reviewed.
Vahid Kamali, Meysam Motaharfar, Rudnei O. Ramos   +2 more
doaj   +2 more sources

The Warm Inflation Story [PDF]

Universe, 2023
Warm inflation has normalized two ideas in cosmology, that in the early universe the initial primordial density perturbations generally could be of classical rather than quantum origin and that during inflation, particle production from interactions ...
Arjun Berera
doaj   +2 more sources

Inflation in the Rényi cosmology [PDF]

Modern Physics Letters A, 2019
The description of the accelerated phases for the current and primordial cosmos has been obtained in the framework of Rényi cosmology. The results show that corrections to the Friedmann equations, originated from differences between Rényi and Bekenstein entropies, can describe both the current accelerated and inflationary eras.
Moradpour, H., Ziaie, A. H., Bezerra, V. B., Ghaffari, S.   +3 more
openaire   +4 more sources

Inflation in Multidimensional Quantum Cosmology [PDF]

Physical Review D, 1995
We extend to multidimensional cosmology Vilenkin's prescription of tunnelling from nothing for the quantum origin of the observable Universe. Our model consists of a $D+4$-dimensional spacetime of topology ${\cal R}\times {\cal S}^3 \times{\cal S}^D ...
A. D. Linde, A. D. Linde, A. O. Barvinsky, A. Vilenkin, A. Vilenkin, A. Vilenkin, A. Vilenkin, E. Carugno, E. W. Kolb, Enrico Carugno, F. Lucchin, Franco Occhionero, Giuseppe Pollifrone, J. B. Hartle, J. J. Halliwell, J. Yokoyama, L. Amendola, L. M. Sokołowski, L. M. Sokołowski, M. J. Duff, M. Yoshimura, Marco Litterio, P. Candelas, P. G. O. Freund, S. Del Campo, V. A. Rubakov, Y. B. Zeldovich, Y. Okada, Yu. A. Kubyshin   +28 more
core   +5 more sources

Inflation in Gauss-Bonnet Brane Cosmology [PDF]

, 2003
The effect of including a Gauss-Bonnet contribution in the bulk action is investigated within the context of the steep inflationary scenario. When inflation is driven by an exponential inflaton field, this Gauss-Bonnet term allows the spectral index of ...
A. A. Starobinsky, A. A. Starobinsky, A. Albrecht, A. D. Linde, A. D. Linde, A. D. Linde, A. Fayyazuddin, A. H. Guth, A. H. Guth, A. Lukas, A. Lukas, A. Sen, A. Sen, A. Sen, B. Abdesselam, B. Zwiebach, C. Charmousis, C. Cśaki, C. Germani, D. G. Boulware, D. Ida, D. Langlois, D. Wands, E. E. Flanagan, E. F. Bunn, E. F. Bunn, E. I. Guendelman, E. J. Copeland, E. Witten, G. F. Giudice, G. Huey, G. Huey, G. Kofinas, G. T. Horowitz, I. Antoniadis, I. Low, I. P. Neupane, I. P. Neupane, J. E. Kim, J. E. Kim, J. E. Kim, J. E. Kim, J. E. Lidsey, J. E. Lidsey, J. E. Lidsey, J. E. Lidsey, J. M. Bardeen, J. M. Cline, J. M. Maldacena, James E. Lidsey, K. A. Meissner, L. Anchordoqui, L. Randall, L. Randall, M. Gasperini, M. Giovannini, M. Gogberashvili, M. Quevedo, M. Visser, N. Arkani-Hamed, N. Deruelle, N. Deruelle, N. Deruelle, N. E. Mavromatos, N. Goheer, N. J. Nunes, N. J. Nunes, O. Aharony, O. Aharony, O. Corradini, P. Binetruy, P. Binétruy, P. Binétruy, P. Hořava, P. Hořava, P. Kraus, R. C. Myers, R. G. Cai, R. Maartens, R. R. Metsaev, S. C. Davis, S. Gubser, S. Gubser, S. Mukohyama, S. Nojiri, S. Nojiri, S. Nojiri, S. Nojiri, S. Nojiri, S. Nojiri, S. W. Hawking, S. W. Hawking, S. W. Hawking, T. Barreiro, T. Shiromizu, V. A. Rubakov, V. Mukhanov, V. Sahni, Y. M. Cho   +98 more
core   +4 more sources

Cosmology without inflation [PDF]

Physical Review D, 2008
We propose a new cosmological paradigm in which our observed expanding phase is originated from an initially large contracting Universe that subsequently experienced a bounce.
A. Ashtekar, A. A. Starobinsky, I. B. Zeldovich, Nelson Pinto-Neto, P. R. Holland, Patrick Peter, R. Penrose, V. F. Mukhanov   +7 more
core   +3 more sources

Inflation and String Cosmology [PDF]

International Journal of Modern Physics A, 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   +5 more sources