2 papers
cond-mat.supr-con2005
Finite-Temperature Renormalization Group Analysis of Interaction Effects in 2D Lattices of Bose-Einstein Condensates
A. Smerzi, P. Sodano, A. Trombettoni
By using a renormalization group analysis, we study the effect of interparticle interactions on the critical temperature at which the Berezinskii-Kosterlitz-Thouless (BKT) transiti…
cond-mat2003
Nonlinear Tight-Binding Approximation for Bose-Einstein Condensates in a Lattice
Augusto Smerzi, Andrea Trombettoni
The dynamics of Bose-Einstein condensates trapped in a deep optical lattice is governed by a discrete nonlinear equation (DNL). Its degree of nonlinearity and the intersite hopping…