Using the Wehrl entropy, we study the delocalization in phase space of energy eigenstates
in the vicinity of avoided crossings in the Lipkin-Meshkov-Glick model. These avoided …

Using the Husimi quasiprobability distribution, we investigate the phase space signatures of
excited-state quantum phase transitions (ESQPTs) in the Lipkin-Meshkov-Glick and coupled …

We present an extension of the Hamiltonian of the two dimensional limit of the vibron model
to encompass all possible interactions up to four-body operators. We apply this Hamiltonian …

We study phase space properties of critical, parity symmetric, N-qudit systems undergoing a
quantum phase transition (QPT) in the thermodynamic N→∞ limit. The D= 3 level (qutrit) …

We introduce the notion of mixed symmetry quantum phase transition (MSQPT) as
singularities in the transformation of the lowest-energy state properties of a system of …

In most cases, excited-state quantum phase transitions can be associated with the existence
of critical points (local extrema or saddle points) in a system's classical limit energy …

The quench dynamics of many-body quantum systems may exhibit nonanalyticities in the
Loschmidt echo, a phenomenon known as dynamical phase transition (DPT). Despite …

We analyze the structure of low energy Hamiltonian eigenstates in zincblende
heterostructures (like HgTe/CdTe quantum wells) near the gamma point, under magnetic …

We characterize excited state quantum phase transitions in the two dimensional limit of the
vibron model with the quantum fidelity susceptibility, comparing the obtained results with the …

We propose localization measures in phase space of the ground state of bilayer quantum
Hall systems at fractional filling factors, to characterize the three quantum phases (shortly …