31 citations · 198 across the 19 of their papers we have counts for
18 papers
Null energy condition of dynamical black holes in spatially flat FLRW space-times
Ion I. Cotaescu
A new identity reported here for the first time is used for studying how the null energy condition can be applied to the models of dynamical black holes proposed recently [I. I. Co…
Evaporating black holes in de Sitter expanding universe
Ion I. Cotaescu
Models of evaporating black holes are constructed using the new solutions of Einstein's equations with perfect fluid in space-times with FLRW asymptotic behaviour derived recently…
Remarks on the Abraham-Minkowski problem, from the formal and from the experimental side
Iver Brevik, Masud Chaichian, Ion I. Cotăescu
We analyze the Abraham-Minkowski problem known from classical electrodynamics from two different perspectives. First, we follow a formal approach, implying use of manifolds with cu…
New Dirac quantum modes in moving frames of the de Sitter spacetime
Ion I. Cotăescu
Recently a new time-evolution picture of the Dirac quantum mechanics was defined in charts with spatially flat Robertson-Walker metrics, under the name of Schrödinger picture [I. I…
Dirac fermions in de Sitter and anti-de Sitter backgrounds
Ion I Cotăescu
Starting with a new theory of symmetries generated by isometries in field theories with spin, one finds the generators of the spinor representation in backgrounds with a given symm…
Approximative analytical solutions of the Dirac equation in Schwarzschild spacetime
Ion I Cotăescu
Approximative analytic solutions of the Dirac equation in the geometry of Schwarzschild black holes are derived obtaining information about the discrete energy levels and the asymp…