We study the long wavelength limit of a spin- 2 Heisenberg antiferromagnetic two-leg ladder, treating the interchain coupling in a nonperturbative way. We perform a mean field analysis and then include the fluctuations in ...

We investigate the ground-state magnetization plateaus appearing in spin-(Formula presented) two-leg ladders built up from dimerized antiferromagnetic Heisenberg chains and dimerized zig-zag interchain couplings. Using ...

Lattice models (tight-binding) for many-body systems give a good theoretical and experimental framework to study quantum phase transitions presented in several strongly correlated materials at low temperature. In general, ...