48 citations · 263 across the 21 of their papers we have counts for
11 papers · 1 filter
Regular Cosmologies: Three Distinct Routes
Sergio Bravo Medina, Marek Nowakowski
Regular black holes avoid the central singularity by replacing it with a de Sitter core. We ask what cosmology follows if the same idea is brought to the early universe. Regular me…
The Universe according to DESI results
Davide Batic, Sergio Bravo Medina, Marek Nowakowski
The recent fit of cosmological parameters by the Dark Energy Spectroscopic Instrument (DESI) collaboration will have a significant impact on our understanding of the universe. Give…
Gravitational Collapse via Wheeler-DeWitt Equation
Davide Batic, Marek Nowakowski
We analyze the Wheeler-DeWitt (WDW) equation in the context of a gravitational collapse. The physics of an expanding/collapsing universe and many details of a collapsing star can c…
Relevant scales for the -metric with positive cosmological constant
Davide Batic, Hadeel Ali Kittaneh, Marek Nowakowski
In this work, we study the weak and strong gravitational lensing in the presence of an accelerating black hole in a universe with positive cosmological constant . First of all,…
Light on curved backgrounds
D. Batic, S. Nelson, M. Nowakowski
We consider the motion of light on different spacetime manifolds by calculating the deflection angle, lensing properties and by probing into the possibility of bound states. The me…
On the existence of certain axisymmetric interior metrics
C. Angulo Santacruz, D. Batic, M. Nowakowski
One of the effects of noncommutative coordinate operators is that the delta-function connected to the quantum mechanical amplitude between states sharp to the position operator get…