scholarly journals High frequency limit for gravitational perturbations of cosmological models in modified gravity theories

2012 ◽  
Vol 2013 (1) ◽  
pp. 13E04-0 ◽  
Author(s):  
K. Saito ◽  
A. Ishibashi
Keyword(s):  
Modified Gravity ◽  
High Frequency ◽  
Cosmological Models ◽  
Frequency Limit ◽  
Gravitational Perturbations ◽  
High Frequency Limit ◽  
Modified Gravity Theories ◽  
Gravity Theories

scholarly journals Relic gravitational waves in cosmological models based on the modified gravity theories

2021 ◽  
Vol 2081 (1) ◽  
pp. 012002
Author(s):  
I V Fomin ◽  
S V Chervon
Keyword(s):  
Energy Density ◽  
Gravitational Waves ◽  
Modified Gravity ◽  
Direct Detection ◽  
Cosmological Models ◽  
Observational Constraints ◽  
Cosmological Perturbations ◽  
Modified Gravity Theories ◽  
Relic Gravitational Waves ◽  
Gravity Theories

Abstract We consider cosmological models based on the generalized scalar-tensor gravity, which correspond to the observational constraints on the parameters of cosmological perturbations for any model’s parameters. The estimates of the energy density of relic gravitational waves for such a cosmological models were made. The possibility of direct detection of such a gravitational waves using modern and prospective methods was discussed as well.

scholarly journals Cosmological models in modified gravity theories with extended nonminimal derivative couplings

2017 ◽  
Vol 95 (4) ◽  
Author(s):  
Tiberiu Harko ◽  
Francisco S. N. Lobo ◽  
Emmanuel N. Saridakis ◽  
Minas Tsoukalas
Keyword(s):  
Modified Gravity ◽  
Cosmological Models ◽  
Modified Gravity Theories ◽  
Gravity Theories
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