In the last decade, there has been an increasing interest in the analysis of energy level
spectra and wave functions of nuclei, particles, atoms and other quantum many-body …

Quantum chaos is generally referred to as the study of quantum manifestations or
fingerprints of nonlinear dynamical and chaotic behaviors in the corresponding classical …

In a classically chaotic system that is ergodic, any trajectory will be arbitrarily close to any
point of the available phase space after a long time, filling it uniformly. Using Born's rules to …

The concentrations of wave functions about classical periodic orbits, or quantum scars, are a
fundamental phenomenon in physics. An open question is whether scarring can occur in …

Quantum scars correspond to enhanced probability densities along unstable classical
periodic orbits. In recent years, research on quantum scars has extended to various systems …

Chaos plays a crucial role in numerous natural phenomena, but its quantum nature has
remained large elusive. One intriguing quantum-chaotic phenomenon is the scarring of a …

As the name indicates, a periodic orbit is a solution for a dynamical system that repeats itself
in time. In the regular regime, periodic orbits are stable, while in the chaotic regime, they …

Quantum scars constitute one of the fundamental pillars in the traditional field of
nonrelativistic quantum chaos. In relativistic quantum systems, chiral scars have been …

Excited-state quantum phase transitions (ESQPTs) are critical phenomena that generate
singularities in the spectrum of quantum systems. For systems with a classical counterpart …

Scar theory is one of the fundamental pillars in the field of quantum chaos, and scarred
functions are a superb tool to carry out studies in it. Several methods, usually semiclassical …