The Jaynes–Cummings Model (JCM) has recently been receiving increased attention as
one of the simplest, yet intricately nonlinear, models of quantum physics. Emphasising the …

Quantum scars refer to eigenstates with enhanced probability density along unstable
classical periodic orbits. First predicted 40 years ago, scars are special eigenstates that …

It has been shown [K. Pakrouski et al., Phys. Rev. Lett. 125, 230602 (2020) PRLTAO 0031-
9007 10.1103/PhysRevLett. 125.230602] that three families of highly symmetric states are …

Ever since its introduction by Ludwig Boltzmann, the ergodic hypothesis became a
cornerstone analytical concept of equilibrium thermodynamics and complex dynamic …

Atypical eigenstates in the form of quantum scars and fragmentation of Hilbert space due to
conservation laws provide obstructions to thermalization in the absence of disorder. In …

We present an extensive numerical study of spectral statistics and eigenfunctions of
quantized triangular billiards. We compute two million consecutive eigenvalues for six …

We present a detailed analysis of the connection between chaos and the onset of
thermalization in the spin-boson Dicke model. This system has a well-defined classical limit …

Quantum many-body scars consist of a few low-entropy eigenstates in an otherwise chaotic
many-body spectrum, and can weakly break ergodicity resulting in robust oscillatory …

Quantum chaos plays a significant role in understanding several important questions of
recent theoretical and experimental studies. Here, by focusing on the localization properties …

Unstable periodic orbits (UPOs) play a key role in the theory of chaos, constituting the
“skeleton” of classical chaotic systems and “scarring” the eigenstates of the corresponding …