This is an introductory review of the physics of quantum spin liquid states. Quantum
magnetism is a rapidly evolving field, and recent developments reveal that the ground states …

The Monte Carlo evaluation of path integrals is one of a few general purpose methods to
approach strongly coupled systems. It is used in all branches of physics, from QCD and …

Quantum computers, though not yet available on the market, will revolutionize the future of
information processing. Quantum computers for special purposes like quantum simulators …

We review recent developments in the physics of ultracold atomic and molecular gases in
optical lattices. Such systems are nearly perfect realisations of various kinds of Hubbard …

Muon spin relaxation (μ SR) experiments on single crystals of the structurally perfect
triangular antiferromagnet YbMgGaO 4 indicate the absence of both static long-range …

We study the S= 1/2 Heisenberg model on the triangular lattice with nearest-and next-
nearest-neighbor interactions J 1 and J 2 with the density matrix renormalization group, on …

We have studied the Heisenberg model on the triangular lattice using quantum Monte Carlo
techniques (up to 144 sites) and exact diagonalization (up to 36 sites). By studying the spin …

Exact spectra of periodic samples are computed up to N= 36. Evidence of an extensive set of
low-lying levels, lower than the softest magnons, is exhibited. These low-lying quantum …

We review the interplay of frustration and strong electronic correlations in quasi-two-
dimensional organic charge transfer salts, such as (BEDT-TTF) 2 X and Et n Me 4− n Pn [Pd …

We propose a scheme to restore spatial symmetry of Hamiltonian in the variational-quantum-
eigensolver (VQE) algorithm for which the quantum circuit structures used usually break the …