365 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of KragujevacRS26 papers
- University of BelgradeRS18 papers
- Vinča Institute of Nuclear Sciences15 papers
- Serbian Academy of Sciences and ArtsRS10 papers
- Mathematical Institute of the Serbian Academy of Sciences and Arts9 papers
- Ruđer Bošković InstituteHR9 papers
- Tel Aviv UniversityIL9 papers
- University of PrimorskaSI9 papers
- Institute of Physics BelgradeRS8 papers
- University of Novi SadRS6 papers
- University of CambridgeGB4 papers
- Foundation for Research and Technology HellasGR3 papers
17 papers · 1 filter
Primordial black hole formation in k-inflation models
Neven Bilić, Dragoljub D. Dimitrijević, Goran S. Djordjevic +2
The local primordial density fluctuations caused by quantum vacuum fluctuations during inflation grow into stars and galaxies in the late universe and, if they are large enough, al…
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…
Some curvature properties of perfect fluid spacetimes
Krishnendu De, Uday Chand De, Ljubica Velimirovic
In this paper we assume that a perfect fluid is the source of the gravitational field while analyzing the solutions to the Einstein field equations.
Constant-roll inflation with tachyon field in the holographic braneworld
Marko Stojanovic, Neven Bilic, Dragoljub D. Dimitrijevic +2
We study inflation driven by the tachyon field in the holographic braneworld by assuming the second slow-roll parameter is constant. The parameter can be either defined by…
Tachyon constant-roll inflation in Randall-Sundrum II cosmology
Marko Stojanovic, Neven Bilic, Dragoljub D. Dimitrijevic +2
We study inflation in a model with constant second slow-roll parameter . In this case, the Hubble expansion rate equation has analytical solutions describing four possible, nont…
AEDGE: Atomic Experiment for Dark Matter and Gravity Exploration in Space
Yousef Abou El-Neaj, Cristiano Alpigiani, Sana Amairi-Pyka +129
We propose in this White Paper a concept for a space experiment using cold atoms to search for ultra-light dark matter, and to detect gravitational waves in the frequency range bet…
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…
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…
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…
Tachyon inflation in the holographic braneworld
Neven Bilic, Dragoljub D. Dimitrijevic, Goran S. Djordjevic +2
A model of tachyon inflation is proposed in the framework of holographic cosmology. The model is based on a holographic braneworld scenario with a D3-brane located at the holograph…
Tachyon with an inverse power-law potential in a braneworld cosmology
Neven Bilić, Silvije Domazet, Goran S. Djordjevic
We study a tachyon cosmological model based on the dynamics of a 3-brane in the bulk of the second Randall-Sundrum model extended to more general warp functions. A well known proto…
Tachyon inflation in an AdS braneworld with back-reaction
Neven Bilic, Dragoljub Dimitrijevic, Goran Djordjevic +1
We analyze the inflationary scenario based on the tachyon field coupled with the radion of the second Randall-Sundrum model (RSII). The tachyon Lagrangian is derived from the dynam…
Classicalization and Quantization of Tachyon-like Matter on (non)Archimedean Spaces
Dragoljub D. Dimitrijevic, Goran S. Djordjevic, Milan Milosevic
We consider a class of tachyon-like potentials, inspired by string theory, D-brane dynamics and cosmology in the context of classical and quantum mechanics. Motivated by the trans-…
Two-oscillator Kantowski-Sachs model of the Schwarzschild black hole interior
Goran S. Djordjevic, Ljubisa Nesic, Darko Radovancevic
In this paper the interior of the Schwarzschild black hole, which is presented as a vacuum homogeneous and anisotropic Kantowski-Sachs minisuperspace cosmological model, is conside…
Quantum Cosmology and Tachyons
D. D. Dimitrijevic, G. S. Djordjevic, Lj. Nesic
We discuss the relevance of the classical and quantum rolling tachyons inflation in the frame of the standard, p-adic and adelic minisuperspace quantum cosmology. The field theory…
On Some Accelerating Cosmological Kaluza-Klein Models
Goran S. Djordjevic, Ljubisa Nesic
We consider (4+D)-dimensional Kaluza-Klein cosmological model with two scaling factors, as real, p-adic and adelic quantum mechanical one. One of the scaling factors corresponds to…
p-Adic and Adelic Minisuperspace Quantum Cosmology
G. S. Djordjevic, B. Dragovich, Lj. D. Nesic +1
We consider the formulation and some elaboration of p-adic and adelic quantum cosmology. The adelic generalization of the Hartle-Hawking proposal does not work in models with matte…