122 citations · 173 across the 3 of their papers we have counts for
9 papers
Continuum analogues of excited-state quantum phase transitions
Pavel Stránský, Milan Šindelka, Pavel Cejnar
Following our work [Phys. Rev. Lett. 125, 020401 (2020)], we discuss a semiclassical description of one-dimensional quantum tunneling through multibarrier potentials in terms of co…
Excited-state quantum phase transitions
Pavel Cejnar, Pavel Stránský, Michal Macek +1
We review the effects of excited-state quantum phase transitions (ESQPTs) in interacting many-body systems with finite numbers of collective degrees of freedom. We classify typical…
Quasiclassical approach to quantum quench dynamics in the presence of an excited-state quantum phase transition
Michal Kloc, Daniel Šimsa, Filip Hanák +3
The dynamics of a quantum system following a sudden, highly non-adiabatic change of its control parameter (quantum quench) is studied with quasiclassical techniques. Recent works h…
Superradiance in finite quantum systems randomly coupled to continuum
Pavel Stránský, Pavel Cejnar
We study the effect of superradiance in open quantum systems, i.e., the separation of short- and long-living eigenstates when a certain subspace of states in the Hilbert space acqu…
Excited-state quantum phase transitions in systems with two degrees of freedom: III. Interacting boson systems
Michal Macek, Pavel Stránský, Amiram Leviatan +1
The series of articles [Ann. Phys. 345, 73 (2014) and 356, 57 (2015)] devoted to excited-state quantum phase transitions (ESQPTs) in systems with degrees of freedom is contin…
Order, Chaos and (Quasi-) Dynamical Symmetries across 1st-order Quantum Phase Transitions in Nuclei
Michal Macek, Pavel Cejnar, Pavel Stránský +2
First order quantum phase transition (QPT) between spherical and axially deformed nuclei shows coexisting, but well-separated regions of regular and chaotic dynamics. We employ a H…