57 citations · 223 across the 13 of their papers we have counts for
13 papers
Exactly solvable model for isospin S=3/2 fermionic atoms on an optical lattice
D. Controzzi, A. M. Tsvelik
We propose an exact solution of a model describing a low energy behavior of cold isospin S=3/2 fermionic atoms on a one-dimensional optical lattice. Depending on the band filling t…
On the relationship between sigma models and spin chains
D. Controzzi, E. Hawkins
We consider the two-dimensional non-linear sigma model with topological term using a lattice regularization introduced by Shankar and Read [Nucl.Phys. B336 (1990), 457],…
Excitation spectrum of doped two-leg ladders: A field theory analysis
D. Controzzi, A. M. Tsvelik
We apply quantum field theory to study the excitation spectrum of doped two-leg ladders. It follows from our analysis that throughout most of the phase diagram the spectrum consist…
Mass Generation in Perturbed Massless Integrable Models
D. Controzzi, G. Mussardo
We extend form-factor perturbation theory to non--integrable deformations of massless integrable models, in order to address the problem of mass generation in such systems. With re…
Scaling of excitations in dimerized and frustrated spin-1/2 chains
D. Controzzi, C. Degli Esposti Boschi, F. Ortolani +1
We study the finite-size behavior of the low-lying excitations of spin-1/2 Heisenberg chains with dimerization and next-to-nearest neighbors interaction, J_2. The numerical analysi…
On the quasiparticle description of c=1 CFTs
D. Controzzi, K. Schoutens
We show that the description of Conformal Field Theory in terms of quasiparticles satisfying fractional statistics can be obtained from the sine-Gordon model with a chemical…