266 citations · 1.5k across the 48 of their papers we have counts for
Showing 2016 · quant-phShow all
2 papers · 2 filters
quant-ph2016★ 32 cited
Quantum phases and entanglement properties of an extended Dicke model
Michal Kloc, Pavel Stransky, Pavel Cejnar
We study a simple model describing superradiance in a system of two-level atoms interacting with a single-mode bosonic field. The model permits a continuous crossover between integ…
quant-ph2016★ 46 cited
Classification of excited-state quantum phase transitions for arbitrary number of degrees of freedom
Pavel Stránský, Pavel Cejnar
Classical stationary points of an analytic Hamiltonian induce singularities of the density of quantum energy levels and their flow with a control parameter in the system's infinite…