scholarly journals New contribution to cosmological perturbations of some inflationary models

1994 ◽  
Vol 50 (10) ◽  
pp. 6115-6122 ◽  
Author(s):  
R. Durrer ◽  
M. Sakellariadou
Keyword(s):  
Cosmological Perturbations ◽  
Inflationary Models

BOUNCING AND QUANTUM THEORY

2011 ◽  
Vol 03 ◽  
pp. 183-194
Author(s):  
NELSON PINTO-NETO
Keyword(s):  
Wave Function ◽  
Quantum Theory ◽  
Power Spectrum ◽  
Quantum Cosmology ◽  
Cosmological Perturbations ◽  
Simple Equations ◽  
The Universe ◽  
Inflationary Models

In this contribution I will present a review about bouncing models arriving from quantum cosmology and show how one can describe the evolution of quantum cosmological perturbations on them. I will discuss the important role played by the choice of the precise quantum theory one selects to interpret the wave function of the Universe in order to obtain simple equations for the evolution of quantum perturbations on these quantum cosmological backgrounds. I will present the predictions of these models concerning the power spectrum of cosmological perturbations and how they can be compared with the usual results obtained from inflationary models. Finally, I will present the new implications of these results for quantum theory.

scholarly journals Cosmological perturbations in inflationary models with anisotropic space-time scaling in a Lifshitz background

2013 ◽  
Vol 88 (10) ◽  
Author(s):  
Mohsen Alishahiha ◽  
Hassan Firouzjahi ◽  
Kazuya Koyama ◽  
Mohammad Hossein Namjoo
Keyword(s):  
Space Time ◽  
Cosmological Perturbations ◽  
Anisotropic Space ◽  
Time Scaling ◽  
Inflationary Models

BOUNCING AND QUANTUM THEORY

2011 ◽  
Vol 26 (22) ◽  
pp. 3801-3812
Author(s):  
NELSON PINTO-NETO
Keyword(s):  
Wave Function ◽  
Quantum Theory ◽  
Power Spectrum ◽  
Quantum Cosmology ◽  
Cosmological Perturbations ◽  
Simple Equations ◽  
The Universe ◽  
Inflationary Models

In this contribution I will present a review about bouncing models arriving from quantum cosmology and show how one can describe the evolution of quantum cosmological perturbations on them. I will discuss the important role played by the choice of the precise quantum theory one selects to interpret the wave function of the Universe in order to obtain simple equations for the evolution of quantum perturbations on these quantum cosmological backgrounds. I will present the predictions of these models concerning the power spectrum of cosmological perturbations and how they can be compared with the usual results obtained from inflationary models. Finally, I will present the new implications of these results for quantum theory.

scholarly journals Cosmological perturbations in Gauss-Bonnet quasi-dilaton massive gravity

2021 ◽  
Vol 103 (12) ◽  
Author(s):  
Amin Rezaei Akbarieh ◽  
Sobhan Kazempour ◽  
Lijing Shao
Keyword(s):  
Massive Gravity ◽  
Cosmological Perturbations
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