3 papers
gr-qc2019
Constrained Dynamics of Tachyon Field in FRWL Spacetime
Marko A. Dimitrijević, Dragoljub D. Dimitrijević, Goran Djordjevic +1
In this paper we continue study of tachyon scalar field described by a Dirac-Born-Infeld (DBI) type action with constraints in the cosmological context. The proposed extension of t…
gr-qc2019
Inflationary RSII Model with a Matter in the Bulk and Exponential Potential of Tachyon Field
Marko Stojanović, Neven Bilić, Dragoljub D. Dimitrijević +2
In this paper we study a tachyon cosmological model based on dynamics of a 3-brane in the second Randall-Sundrum (RSII) model extended to include matter in the bulk. The presence o…
gr-qc2018
Numerical Calculation of Hubble Hierarchy Parameters and Observational Parameters of Inflation
Milan Milošević, Neven Bilić, Dragoljub D. Dimitrijević +2
We present results obtained by a software we developed for computing observational cosmological inflation parameters: the scalar spectral index () and the tensor-to-scalar rat…