4 papers
Analytical calculation of the observational parameters for tachyon inflation
Marko Stojanovic, Neven Bilić, Goran S. Djordjevic +2
We investigate the possibility of analytically calculating observational parameters in tachyon inflation cosmology, using the Hubble expansion rate as a function of the tachyon fie…
A scaling invariance of the perturbations in -inflation models
Neven Bilić, Dragoljub D. Dimitrijević, Goran S. Djordjevic +2
We study the background and perturbations in -essence inflation models and show that a general -essence exhibits a simple scaling property. In particular, we study two classe…
On attractor behavior in braneworld constant-roll inflation
Goran S. Djordjevic, Neven Bilić, Dragoljub D. Dimitrijevic +2
We investigate in detail the attractor behavior of some inflationary models based on braneworld dynamics under the constant-roll condition. We describe the dynamics of the models,…
Analog Schwarzschild black hole from a nonisentropic fluid
Neven Bilić, Hrvoje Nikolić
We study the conditions under which an analog acoustic geometry of a relativistic fluid in flat spacetime can take the same form as the Schwarzschild black hole geometry. We find t…