59 citations · 471 across the 35 of their papers we have counts for
36 papers
Note on the Margolus-Levitin quantum speed limit for arbitrary fidelity
Krzysztof Andrzejewski, Katarzyna Bolonek-Lasoń, Piotr Kosiński
For vanishing fidelity between initial and final states two important quantum speed limits, the Mandelstam-Tamm limit (involving energy dispersion) and Margolus-Levitin one (involv…
Various disguises of the Pais-Uhlenbeck oscillator
Mahmut Elbistan, Krzysztof Andrzejewski
Beginning with a simple set of planar equations, we discuss novel realizations of the Pais-Uhlenbeck oscillator in various contexts. First, due to the bi-Hamiltonian character of t…
Dynamics of entropy and information of time-dependent quantum systems: exact results
K. Andrzejewski
Dynamical aspects of information-theoretic and entropic measures of quantum systems are studied. First, we show that for the time-dependent harmonic oscillator, as well as for the…
Spinning particles, coadjoint orbits and Hamiltonian formalism
Krzysztof Andrzejewski, Cezary Gonera, Joanna Goner +2
The extensive analysis of the dynamics of relativistic spinning particles is presented. Using the coadjoint orbits method the Hamiltonian dynamics is explicitly described. The main…
Global propagation of massive quantum fields in the plane gravitational waves and electromagnetic backgrounds
K. Andrzejewski, P. Kosinski
The behavior of massive quantum fields in the general plane wave spacetime and external, non-plane, electromagnetic waves is studied. The asymptotic conditions, the "in" ("out") st…
Conformal symmetries and integrals of the motion in pp waves with external electromagnetic fields
K. Andrzejewski, N. Dimakis, M. Elbistan +3
The integrals of the motion associated with conformal Killing vectors of a curved space-time with an additional electromagnetic background are studied for massive particles. They i…