Zobrazeno 1 - 10
of 733
pro vyhledávání: '"Karami, K."'
Autor:
Jacobi, Ch., Karami, K.
We analyse 43 years of mesosphere/lower thermosphere (MLT) horizontal winds obtained from a joint analysis of low frequency (LF) spaced receiver lower ionospheric drift measurements from 1979 through 2006 and very high frequency (VHF) meteor radar wi
Externí odkaz:
https://ul.qucosa.de/id/qucosa%3A88540
https://ul.qucosa.de/api/qucosa%3A88540/attachment/ATT-0/
https://ul.qucosa.de/api/qucosa%3A88540/attachment/ATT-0/
Here, we explore the formation of primordial black holes (PBHs) within a scalar field inflationary model coupled to the Gauss-Bonnet (GB) term, incorporating low-scale spontaneously broken supersymmetric (SB SUSY) potential. The coupling function amp
Externí odkaz:
http://arxiv.org/abs/2407.15445
Publikováno v:
Caspian Journal of Environmental Sciences, Vol 14, Iss 2, Pp 165-175 (2016)
There is a strong mutuality between tourism and environment via the creation of feedback mechanisms, since tourism often places adverse effects upon the quality and quantity of natural and cultural resources of the destination, leading to its quali
Externí odkaz:
https://doaj.org/article/a5e0b6f274cc4d1fbe2e5ff8ebdbb8e2
Publikováno v:
Annals of Physics 422 (2020) 168299
We study the effect of varying sound speed on clustering dark energy in the Dirac-Born-Infeld (DBI) scenario. The DBI action is included in the class of $k$-essence models, and it has an important role in describing the effective degrees of freedom o
Externí odkaz:
http://arxiv.org/abs/2001.07920
Publikováno v:
Eur. Phys. J. C (2019) 79:79
We study inflation with the Dirac-Born-Infeld (DBI) noncanonical scalar field in both the cold and warm scenarios. We consider the Anti-de Sitter warp factor $f(\phi)=f_{0}/\phi^{4}$ for the DBI inflation and check viability of the quartic potential
Externí odkaz:
http://arxiv.org/abs/1807.05732
Publikováno v:
MNRAS 481, 2393 (2018)
Within the framework of DBI non-canonical scalar field model of dark energy, we study the growth of dark matter perturbations in the both linear and non-linear regimes. In our DBI model, we consider the anti-de Sitter warp factor $f(\phi)=f_0\, \phi^
Externí odkaz:
http://arxiv.org/abs/1805.03069
Publikováno v:
JCAP 07 (2016) 006
We study inflation in the Brans-Dicke gravity as a special model of the scalar-tensor gravity. We obtain the inflationary observables containing the scalar spectral index, the tensor-to-scalar ratio, the running of the scalar spectral index and the e
Externí odkaz:
http://arxiv.org/abs/1605.00530
Publikováno v:
JHEP 01 (2016) 131
We study inflation in the framework of $f(T)$-gravity in the presence of a canonical scalar field. After reviewing the basic equations governing the background cosmology in $f(T)$-gravity, we turn to study the cosmological perturbations and obtain th
Externí odkaz:
http://arxiv.org/abs/1509.08769
Publikováno v:
Phys. Rev. D 95, 103506 (2017)
Within the framework of tachyon inflation, we consider different steep potentials and check their viability in light of the Planck 2015 data. We see that in this scenario, the inverse power-law potential $V(\phi)=V_{0}(\phi/\phi_{0})^{-n}$ with $n=2$
Externí odkaz:
http://arxiv.org/abs/1508.04760
Publikováno v:
Iranian Journal of Astronomy and Astrophysics 3, 81 (2016)
Here, we investigate the growth of matter density perturbations as well as the generalized second law (GSL) of thermodynamics in the framework of $f(R)$-gravity. We consider a spatially flat FRW universe filled with the pressureless matter and radiat
Externí odkaz:
http://arxiv.org/abs/1507.08538