Topological materials have become the focus of intense research in recent years, since they
exhibit fundamentally new physical phenomena with potential applications for novel devices …

The discovery of the quantum spin Hall effect and topological insulators more than a decade
ago has revolutionized modern condensed matter physics. Today, the field of topological …

Electron correlation and topology are two central threads of modern condensed matter
physics. Semiconductor moiré materials provide a highly tuneable platform for studies of …

A large repulsion between particles in a quantum system can lead to their localization, an
effect responsible for the Mott insulator phases in strongly correlated materials. In a system …

In non-interacting systems, bands from non-trivial topology emerge strictly at half-filling and
exhibit either the quantum anomalous Hall or spin Hall effects. Here we show using …

Discontinuous (first-order) quantum phase transitions and the associated metastability play
central roles in diverse areas of physics, ranging from ferromagnetism to the false-vacuum …

We review many-body effects, their microscopic origin, as well as their impact on
thermoelectricity in correlated narrow-gap semiconductors. Members of this class—such as …

Abstract The Jaynes–Cummings Model (JCM) is a fundamental model and building block for
light‐matter interactions, quantum information and quantum computation. The present work …

The quantum Rabi model (QRM) is a fundamental model for light-matter interactions. A
fascinating feature of the QRM is that it manifests a quantum phase transition which is …

We show here two models where changing topology does not necessarily close the bulk
insulating charge gap as demanded in the standard noninteracting picture. From extensive …