3 papers
quant-ph2026
The use of Peres lattices in periodically driven systems
Lukáš Honsa, Jan StÅeleÄek, Jakub Novotný +1
We demonstrate the strength of the method of Peres lattices in periodically driven quantum systems. The method, which has previously been used mostly in stationary systems, enables…
quant-ph2026
Quantum geometry of connected state manifolds: When diabolic points act as bridges between eigenstate manifolds
Jan StÅeleÄek, Jakub Novotný, Pavel Cejnar
Parametric Hamiltonians often exhibit point-like spectral degeneracies (diabolic points, or conical intersections), which can lead to singularities in the Provost-Vallee metric of…
quant-ph2026
Tracing complex zeros of the quantum survival amplitude: How the energy distribution controls dynamical phase transitions
Jakub Novotný, Jan StÅeleÄek, Pavel Stránský +1
Motivated by the advance of dynamical quantum phase transitions (DQPTs), we analyze the zeros of the complex-time survival (Loschmidt) amplitude in finite quantum systems and devel…