Abstract The Bose–Einstein condensate (BEC) is a fascinating state of matter predicted to
occur for particles obeying Bose statistics. Although the BEC has been observed with …

This article reviews experimental and theoretical work on Bose-Einstein condensation in
quantum magnets. These magnets are natural realizations of gases of interacting bosons …

A theoretical overview of the phenomenon of spontaneous magnon decays in quantum
antiferromagnets is presented. The intrinsic zero-temperature dam** of magnons in …

We measure by inelastic neutron scattering the spin excitation spectra as a function of
applied magnetic field in the quantum spin-ladder material (C 5 H 12 N) 2 CuBr 4. Discrete …

We study the magnetic-field-induced quantum phase transition from a gapped quantum
phase that<? format?> has no magnetic long-range order into a gapless phase in the spin …

We report the single-crystal study of the bulk magnetization and neutron-scattering
measurements on a quantum S= 1/2 spin ladders system IPA-Cu (Cl 0.95 Br 0.05) 3 with …

We review recent theoretical and experimental efforts aimed at the investigation of the
physics of interacting disordered bosons (so-called dirty bosons) in the context of quantum …

Frustrated spin systems have traditionally proven challenging to understand, owing to a
scarcity of controlled methods for their analyses. By contrast, under strong magnetic fields …

One-dimensional free fermions and hard-core bosons are often considered to be equivalent.
Indeed, when restricted to nearest-neighbor hop** on a chain, the particles cannot …

The literature of low‐dimensional CuII molecular magnetic systems in which superexchange
pathways involve halide ions and/or cyclic 1, 4‐diazines is reviewed. Compounds are …