On the effect of renormalization group improvement on the cosmological power spectrum
Abstract Asymptotically safe quantum gravity predicts running gravitational and cosmological constants, while it remains a meaningful quantum field theory because of the existence of a finite number of non-Gaussian ultraviolet fixed points. We have investigated the effect of such running couplings o...
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SpringerOpen
2018-01-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-017-5510-5 |
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doaj-c41b8a608b6c489da619fdb7a22ef8852020-11-25T00:24:51ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522018-01-0178111110.1140/epjc/s10052-017-5510-5On the effect of renormalization group improvement on the cosmological power spectrumR. Moti0A. Shojai1Department of Physics, University of TehranDepartment of Physics, University of TehranAbstract Asymptotically safe quantum gravity predicts running gravitational and cosmological constants, while it remains a meaningful quantum field theory because of the existence of a finite number of non-Gaussian ultraviolet fixed points. We have investigated the effect of such running couplings on the cosmological perturbations. We have obtained the improved Mukhanov–Sassaki equation and solved it for two models. The effect of such running of the coupling constants on the cosmological power spectrum is also studied.http://link.springer.com/article/10.1140/epjc/s10052-017-5510-5 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
R. Moti A. Shojai |
| spellingShingle |
R. Moti A. Shojai On the effect of renormalization group improvement on the cosmological power spectrum European Physical Journal C: Particles and Fields |
| author_facet |
R. Moti A. Shojai |
| author_sort |
R. Moti |
| title |
On the effect of renormalization group improvement on the cosmological power spectrum |
| title_short |
On the effect of renormalization group improvement on the cosmological power spectrum |
| title_full |
On the effect of renormalization group improvement on the cosmological power spectrum |
| title_fullStr |
On the effect of renormalization group improvement on the cosmological power spectrum |
| title_full_unstemmed |
On the effect of renormalization group improvement on the cosmological power spectrum |
| title_sort |
on the effect of renormalization group improvement on the cosmological power spectrum |
| publisher |
SpringerOpen |
| series |
European Physical Journal C: Particles and Fields |
| issn |
1434-6044 1434-6052 |
| publishDate |
2018-01-01 |
| description |
Abstract Asymptotically safe quantum gravity predicts running gravitational and cosmological constants, while it remains a meaningful quantum field theory because of the existence of a finite number of non-Gaussian ultraviolet fixed points. We have investigated the effect of such running couplings on the cosmological perturbations. We have obtained the improved Mukhanov–Sassaki equation and solved it for two models. The effect of such running of the coupling constants on the cosmological power spectrum is also studied. |
| url |
http://link.springer.com/article/10.1140/epjc/s10052-017-5510-5 |
| work_keys_str_mv |
AT rmoti ontheeffectofrenormalizationgroupimprovementonthecosmologicalpowerspectrum AT ashojai ontheeffectofrenormalizationgroupimprovementonthecosmologicalpowerspectrum |
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1725351202160377856 |