171 citations · 401 across the 10 of their papers we have counts for
9 papers · 1 filter
Planck scale operators, inflation and fine tuning
Anja Marunovic, Tomislav Prokopec
Ultraviolet completion of the standard model plus gravity at and beyond the Planck scale is a daunting problem to which no generally accepted solution exists. Principal obstacles i…
Boson stars with nonminimal coupling
Anja Marunovic
Boson stars coupled to Einstein's general relativity possess some features similar to gravastars, such as the anisotropy in principal pressures and relatively large compactness ($μ…
Global monopoles can change Universe's topology
Anja Marunovic, Tomislav Prokopec
If the Universe undergoes a phase transition, at which global monopoles are created or destroyed, topology of its spatial sections can change. More specifically, by making use of M…
A novel black hole mimicker: a boson star and a global monopole nonminimally coupled to gravity
Anja Marunovic, Miljenko Murkovic
A field-theoretic model for a highly compact object that mimicks a black hole is found for the gravitationally interacting system of a boson star and a global monopole which are no…
Dark energy-like stars from nonminimally coupled scalar field
Dubravko Horvat, Anja Marunovic
We show that even a rather minimal extension of the Einstein - Hilbert action by a nonminimal coupling of the scalar field to the Ricci curvature scalar results in configurations t…
Radial stability analysis of the continuous pressure gravastar
Dubravko Horvat, Sasa Ilijic, Anja Marunovic
Radial stability of the continuous pressure gravastar is studied using the conventional Chandrasekhar method. The equation of state for the static gravastar solutions is derived an…
Time transients in the quantum corrected Newtonian potential induced by a massless nonminimally coupled scalar field
Anja Marunovic, Tomislav Prokopec
We calculate the one loop graviton vacuum polarization induced by a massless, nonminimally coupled scalar field on Minkowski background. We make use of the Schwinger-Keldysh formal…
Radial pulsations and stability of anisotropic stars with quasi-local equation of state
Dubravko Horvat, Sasa Ilijic, Anja Marunovic
Quasi-local variables, i.e. quantities whose values can be derived from physics accessible within an arbitrarily small neighborhood of a spacetime point, are used to construct the…
Electrically charged gravastar configurations
Dubravko Horvat, Sasa Ilijic, Anja Marunovic
The notion of a compact object immune to the horizon problem and comprising an anisotropic inhomogeneous fluid with a specific radial pressure behavior, i.e. the gravastar, is exte…