299 citations · 724 across the 35 of their papers we have counts for
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White dwarfs in minimal dilatonic gravity
Denitsa Staicova
We study static, spherically symmetric white dwarfs in minimal dilatonic gravity (MDG) -- a Brans-Dicke theory with fixed coupling and free Compton length . Solving…
Electromagnetic Waves in Cosmological Space-Time II. Luminosity Distance
Denitsa Staicova, Michail Stoilov
In this article, we continue our investigation on how the electromagnetic waves propagate in the Friedman-Lemaitre-Robertson-Walker spacetime. Unlike the standard approach, which r…
Probing for Lorentz Invariance Violation in Pantheon Plus Dominated Cosmology
Denitsa Staicova
The Hubble tension in cosmology is not showing signs of alleviation and thus, it is important to look for alternative approaches to it. One such example would be the eventual detec…
Impact of Cosmology on Lorentz Invariance Violation Constraints from GRB Time-Delays
Denitsa Staicova
Putting constraints on a possible Lorentz Invariance Violation (LIV) from astrophysical sources such as gamma-ray bursts (GRBs) is essential for finding evidences of new theories o…
Special cases of the Multi-Measure Model -- understanding the prolonged inflation
Denitsa Staicova
The multi-measure model (MMM), in which one modifies the action to include both the Riemannian measure and a non-Riemannian one, has proven to be able to produce viable Universe ev…
The role of the slope in the the multi-measure cosmological model
Denitsa Staicova
In this work, we report some results on the numerical exploration of the model of Guendelman-Nissimov-Pacheva. This model has been previously applied to cosmology, but there were o…
Cosmology from multimeasure multifield model
Denitsa Staicova, Michail Stoilov
We consider the cosmological application of a (variant of) relatively newly proposed model \cite{1609.06915} unifying inflation, dark energy, dark matter, and the Higgs mechanism.…
The multi-measure cosmological model and its peculiar effective potential
Denitsa Staicova
The multi-measures model applied to cosmology has been recently shown to reproduce qualitatively the expected stages of the Universe evolution, along with some unexpected features.…
Cosmological Solutions from a Multi-Measure Model with Inflaton Field
Denitsa Staicova, Michail Stoilov
In a recent work, we demonstrated that a modified gravity model in which a scalar "darkon" field is coupled to both the standard Riemannian metric and to another non-Riemannian vol…
Cosmological solutions from models with unified dark energy and dark matter and with inflaton field
Denitsa Staicova, Michail Stoilov
Recently, few cosmological models with additional non-Riemannian volume form(s) have been proposed. In this article we use Supernovae type Ia experimental data to test one of these…
Cosmological aspects of a unified dark energy and dust dark matter model
Denitsa Staicova, Michail Stoilov
Recently, a model of modified gravity plus single scalar field model was proposed, in which the scalar couples both to the standard Riemannian volume form given by the square root…
Application of the confluent Heun functions for finding the quasinormal modes of nonrotating black holes
Plamen Fiziev, Denitsa Staicova
Although finding numerically the quasinormal modes of a nonrotating black hole is a well-studied question, the physics of the problem is often hidden behind complicated numerical p…