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4 papers
One-Dimensional Quantum Spin Liquids
P. Lecheminant
This chapter is intended as a brief overview of some of the quantum spin liquid phases with unbroken SU(2) spin symmetry available in one dimension. The main characteristics of the…
Chiral order in spin-S XY chains
Th. Jolicoeur, Ph. Lecheminant
We consider the issue of chiral ordering in spin chains for an arbitrary value of the spins S. By use of bosonization according to a scheme developped by H.-J. Schulz, we obtain th…
Theory Of The One Dimensional SU(4) Spin-Orbital Model
P. Azaria, A. O. Gogolin, P. Lecheminant +1
The one-dimensional spin-orbital model is studied by means of Abelian bosonization. We derive the low-energy effective theory which enables us to study small deviations from the SU…
Restoration of Symmetry by Interactions and Nonreliability of the Perturbative Renormalization Group Approach
P. Azaria, P. Lecheminant, A. M. Tsvelik
We discuss examples of (1+1)-dimensional models where the perturbative renormalization group (RG) indicates a tendency to restore the symmetry in the strong coupling limit. We show…