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Rodríguez K, Argüelles A, Kolezhuk AK, et al. Field-induced phase transitions of repulsive spin-1 bosons in optical lattices. Phys Rev Lett. 2011;106(10):105302doi: 10.1103/PhysRevLett.106.105302.
Rodríguez, K., Argüelles, A., Kolezhuk, A. K., Santos, L., & Vekua, T. (2011). Field-induced phase transitions of repulsive spin-1 bosons in optical lattices. Physical review letters, 106(10), 105302. https://doi.org/10.1103/PhysRevLett.106.105302
Rodríguez, K, et al. "Field-induced phase transitions of repulsive spin-1 bosons in optical lattices." Physical review letters vol. 106,10 (2011): 105302. doi: https://doi.org/10.1103/PhysRevLett.106.105302
Rodríguez K, Argüelles A, Kolezhuk AK, Santos L, Vekua T. Field-induced phase transitions of repulsive spin-1 bosons in optical lattices. Phys Rev Lett. 2011 Mar 11;106(10):105302. doi: 10.1103/PhysRevLett.106.105302. Epub 2011 Mar 09. PMID: 21469799.
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Phys Rev Lett. 2011 Mar 11;106(10):105302. doi: 10.1103/PhysRevLett.106.105302. Epub 2011 Mar 09.

Field-induced phase transitions of repulsive spin-1 bosons in optical lattices.

Physical review letters

K Rodríguez, A Argüelles, A K Kolezhuk, L Santos, T Vekua

Affiliations

  1. Institut für Theoretische Physik, Leibniz Universität Hannover, Appelstrasse 2 D-30167, Hannover, Germany.

PMID: 21469799 DOI: 10.1103/PhysRevLett.106.105302

Abstract

We study the phase diagram of repulsively interacting spin-1 bosons in optical lattices at unit filling, showing that an externally induced quadratic Zeeman effect may lead to a rich physics characterized by various phases and phase transitions. We find that the main properties of the system may be described by an effective field model, which provides the precise location of the phase boundaries for any dimension, in excellent agreement with our numerical calculations for one-dimensional (1D) systems. Thus, our work provides a quantitative guide for the experimental analysis of various types of field-induced quantum phase transitions in spin-1 lattice bosons. These transitions, which are precluded in spin-1/2 systems, may be realized by using an externally modified quadratic Zeeman coupling, similar to recent experiments with spinor condensates in the continuum.

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