Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Marunović, Anja"'
Publikováno v:
JHEP 09 (2020) 165
We consider the Abelian Higgs model in the broken phase as a spectator in cosmological spaces of general $D$ space-time dimensions, and allow for the condensate to be time-dependent. We fix the unitary gauge using Dirac's formalism for constrained sy
Externí odkaz:
http://arxiv.org/abs/2005.05435
Autor:
Marunovic, Anja, Prokopec, Tomislav
Publikováno v:
Phys. Rev. D 96, 043512 (2017)
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 include (a) lack of data at the Planck scale (b) nonrenormalizability o
Externí odkaz:
http://arxiv.org/abs/1611.07898
Autor:
Marunovic, Anja
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 ($\mu_{max} = 0.32$). However, no matter how large the self-interaction i
Externí odkaz:
http://arxiv.org/abs/1512.05718
Autor:
Marunović, Anja, Prokopec, Tomislav
We investigate a class of models of topological inflation in which a super-Hubble-sized global monopole seeds inflation. These models are attractive since inflation starts from rather generic initial conditions, but their not so attractive feature is
Externí odkaz:
http://arxiv.org/abs/1508.05010
Publikováno v:
Phys. Rev. D 92, 044008 (2015)
We consider inflation in a universe with a positive cosmological constant and a nonminimally coupled scalar field, in which the field couples both quadratically and quartically to the Ricci scalar. When considered in the Einstein frame and when the n
Externí odkaz:
http://arxiv.org/abs/1504.07782
Autor:
Marunovic, Anja, Prokopec, Tomislav
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 Myers' theorem, we show that, after a transition in which global monopo
Externí odkaz:
http://arxiv.org/abs/1411.7402
Autor:
Marunovic, Anja, Murkovic, Miljenko
Publikováno v:
Class. Quantum Grav. 31 (2014) 045010
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 nonminimally coupled to gravity. According to the strength of the nonlin
Externí odkaz:
http://arxiv.org/abs/1308.6489
Autor:
Horvat, Dubravko, Marunovic, Anja
Publikováno v:
Class. Quantum Grav. 30 145006 2013
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 that resemble more the dark energy stars then the ordinary boson stars.
Externí odkaz:
http://arxiv.org/abs/1212.3781
Autor:
Marunovic, Anja, Prokopec, Tomislav
Publikováno v:
Phys. Rev. D 87, 104027 (2013)
We calculate the quantum corrections to the Newtonian potential induced by a massless, nonminimally coupled scalar field on Minkowski background. We make use of the graviton vacuum polarization calculated in our previous work and solve the equation o
Externí odkaz:
http://arxiv.org/abs/1209.4779
Publikováno v:
Class.Quant.Grav.28:195008,2011
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 and Einstein equations for small perturbations around the equilibrium ar
Externí odkaz:
http://arxiv.org/abs/1104.3537