2 papers
cond-mat.other2005
Fractional-Period Excitations in Continuum Periodic Systems
H. E. Nistazakis, Mason A. Porter, P. G. Kevrekidis +3
We investigate the generation of fractional-period states in continuum periodic systems. As an example, we consider a Bose-Einstein condensate confined in an optical-lattice potent…
cond-mat.soft2003
Spatial period-doubling in Bose-Einstein condensates in an optical lattice
M. Machholm, A. Nicolin, C. J. Pethick +1
We demonstrate that there exist stationary states of Bose-Einstein condensates in an optical lattice that do not satisfy the usual Bloch periodicity condition. Using the discrete m…