378 citations · 1.6k across the 30 of their papers we have counts for
28 papers
Relativity of superluminal observers in spacetime
Andrzej Dragan, Kacper Dębski, Szymon Charzyński +2
We develop an extension of special relativity in dimensional spacetime to account for superluminal inertial observers and show that such an extension rules out the convention…
Model-independent approach to effective sound speed in multi-field inflation
Antonio Enea Romano, Sergio Andrés Vallejo-Peña, Krzysztof Turzyński
For any physical system satisfying the Einstein's equations, the comoving curvature perturbations satisfy an equation involving the momentum-dependent effective sound speed, valid…
Can a charged decaying particle serve as an ideal clock in the presence of the magnetic field?
Roberto Pierini, Krzysztof Turzynski, Andrzej Dragan
We investigate a model of a supposedly ideal clock based on the decay rate of a charged particle in circular motion in a constant magnetic field. We show that the time measured by…
Towards understanding thermal history of the Universe through direct and indirect detection of dark matter
Leszek Roszkowski, Sebastian Trojanowski, Krzysztof Turzynski
We examine the question to what extent prospective detection of dark matter by direct and indirect- detection experiments could shed light on what fraction of dark matter was gener…
Geometrical Destabilization of Inflation
Sébastien Renaux-Petel, Krzysztof Turzyński
We show the existence of a general mechanism by which heavy scalar fields can be destabilized during inflation, relying on the fact that the curvature of the field space manifold c…
Axino dark matter with low reheating temperature
Leszek Roszkowski, Sebastian Trojanowski, Krzysztof Turzynski
We examine axino dark matter in the regime of a low reheating temperature T_R after inflation and taking into account that reheating is a non-instantaneous process. This can have a…