88 citations · 134 across the 5 of their papers we have counts for
5 papers
Thermal spin fluctuations in spinor Bose-Einstein condensates
Marina Melé-Messeguer, Bruno Juliá-Díaz, Artur Polls +1
We study the thermal activation of spin fluctuations in dynamically-stable spinor Bose-Einstein condensates. We analyze the specific cases of a non-dipolar spin-1 condensate in m =…
Spin-driven spatial symmetry breaking of spinor condensates in a double-well
Marina Melé-Messeguer, Simone Paganelli, Bruno Juliá-Díaz +2
The properties of an F=1 spinor Bose-Einstein condensate trapped in a double-well potential are discussed using both a mean-field two-mode approach and a simplified two-site Bose-H…
Dynamic generation of spin-squeezed states in bosonic Josephson junctions
B. Juliá-Díaz, T. Zibold, M. K. Oberthaler +3
We analyze the formation of squeezed states in a condensate of ultracold bosonic atoms confined by a double-well potential. The emphasis is set on the dynamical formation of such s…
Improved variational approach to the two-site Bose-Hubbard model
Marina Melé-Messeguer, Bruno Juliá-Díaz, Artur Polls
An improved variational ansatz is proposed to capture the most striking properties of the ground state of a slightly biased attractive two-site Bose-Hubbard Hamiltonian. Our ansatz…
Beyond standard two-mode dynamics in Bosonic Josephson junctions
B. Juliá-Díaz, J. Martorell, M. Melé-Messeguer +1
We examine the dynamics of a Bose-Einstein condensate in a symmetric double-well potential for a broad range of non-linear couplings. We demonstrate the existence of a region, beyo…