[seminar] M. Milošević, 2.11. (petak) 14h (c.t.), seminar ZTF-a
Anđelo Samsarov
Andjelo.Samsarov at irb.hr
Fri Oct 26 11:30:41 CEST 2018
Observational parameters in a braneworld inflationary scenario
Milan Milošević
University of Niš,
Physics Department
Datum: petak, 2. studenoga 2018.
Vrijeme: 14 sati c.t.
Mjesto: IRB, predavaona I krila
Sažetak
In this talk the results will be presented obtained by a software
we developed for computing observational cosmological inflation
parameters: the scalar spectral index (ns) and the tensor-to-scalar
ratio (𝑟) for a braneworld inflationary scenarios.
We have studied a tachyon cosmological model based on the dynamics of
a 3-brane in the second Randall-Sundrum (RSII) model extended to
include matter in the bulk. The presence of matter modifies the RSII
cosmology and tachyon potential. We have studied different types of
tachyonic potential (inverse power law, exponential and inverse cosh)
in the context of braneworld cosmology. The calculated numerical
values of observational parameters are compared with the latest
observations by the Planck Collaboration (2018).
The program is written in C/C++. The GNU Scientific Library is used
for some of the numerical computations and R language is used for data
analysis and plots.
The talk is based on the following papers:
1. D.D. Dimitrijevic, N. Bilić, G.S. Djordjevic, M. Milosevic, and M.
Stojanović, Tachyon Scalar Field in a Braneworld Cosmology, in
International Journal of Modern Physics A, 2018 (submitted)
2. N. Bilić, S. Domazet, and G.S. Djordjevic, Particle Creation and Reheating
in a Braneworld Inflationary Scenario, Physical Review D, 96 (2017),
083518
3. N. Bilić, S. Domazet, and G. S. Djordjevic, Tachyon with an inverse power-
law potential in a braneworld cosmology, Class. Quantum Gravity 34, 165006
(2017).
4. N. Bilić, D.D. Dimitrijevic, G.S. Djordjevic, and M.Milosevic, Tachyon
Inflation in an AdS Braneworld with Backreaction, International Journal of
Modern Physics A, 32 (2017)
Voditelj seminara: Anđelo Samsarov (asamsarov at irb.hr)
http://thphys.irb.hr/Seminar/list.htm
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