We present a theory of the superfluid weight in multiband attractive Hubbard models within
the Bardeen-Cooper-Schrieffer (BCS) mean-field framework. We show how to separate the …

We use unbiased numerical methods to study the onset of pair superfluidity in a system that
displays flat bands in the noninteracting regime. This is achieved by using a known example …

Due to their driven-dissipative nature, photonic quantum fluids present new challenges in
understanding superfluidity. Some associated effects have been observed, and notably the …

Atoms deposited on atomically thin substrates are a playground for exotic quantum many-
body physics due to the highly tunable, atomic-scale nature of the interaction potentials. The …

We use unbiased computational methods to elucidate the onset and properties of pair
superfluidity in two-species fermionic and bosonic systems with onsite interspecies attraction …

We study the phase diagram of the one-dimensional bosonic Hubbard model with contact
(U) and near neighbor (V) interactions focusing on the gapped Haldane insulating (HI) …

We consider the possibility of superfluid behavior in a coherently driven, dissipative
microcavity polariton system in gapless spectrum regimes. Previous work demonstrated the …

Bosonic atoms deposited on atomically thin substrates represent a playground for exotic
quantum many-body physics due to the highly-tunable, atomic-scale nature of the interaction …

We study the quantum phase diagram of a system of hard-core bosons on the kagome
lattice with nearest-neighbor repulsive interactions, for arbitrary densities, by means of the …

The search for spontaneous pattern formation in equilibrium phases with genuine quantum
properties is a leading direction of current research. In this paper, we investigate the effect of …