We study disorder-induced ergodicity breaking transition in high-energy eigenstates of
interacting spin-1/2 chains. Using exact diagonalization, we introduce a cost function …

Despite enormous efforts devoted to the study of the many-body localization (MBL)
phenomenon, the nature of the high-energy behavior of the Heisenberg spin chain in a …

We numerically investigate one-dimensional Bose-Hubbard chains with on-site disorder by
means of exact diagonalization. A primary focus of our work is on characterizing Fock-space …

We numerically explore Z 2-symmetric random interacting Ising-Majorana chains at high
energy. A very rich phase diagram emerges with two topologically distinct many-body …

Characterizing the delocalization transition in closed quantum systems with a many-body
localized phase is a key open question in the field of nonequilibrium physics. We exploit the …

We show that short-range interactions are irrelevant around gapless ground-state
delocalization-localization transitions driven by quasiperiodicity in interacting fermionic …

Many-body localization (MBL) is well characterized in Fock space. To quantify the degree of
this Fock-space localization, the multifractal dimension D q is employed; it has been claimed …

Strong disorder in interacting quantum systems can give rise to the phenomenon of many-
body localization (MBL), which defies thermalization due to the formation of an extensive …

Despite a very good understanding of single-particle Anderson localization in one-
dimensional (1D) disordered systems, many-body effects are still full of surprises; a famous …

Particle entanglement provides information on quantum correlations in systems of
indistinguishable particles. Here, we study the one-particle entanglement entropy for an …