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Quantum phase transitions across p-wave Feshbach resonance | | V. Gurarie
; L. Radzihovsky
; A. V. Andreev
; | | Date: |
25 Oct 2004 | | Journal: | Phys. Rev. Lett. 94, 230403 (2005) | | Subject: | Superconductivity; Statistical Mechanics | cond-mat.supr-con cond-mat.stat-mech | | Affiliation: | University of Colorado, Boulder | | Abstract: | We study a single-species polarized Fermi gas tuned across a narrow p-wave Feshbach resonance. We show that in the course of a BEC-BCS crossover the system can undergo a magnetic field-tuned quantum phase transition from a p_x-wave to a p_x+i p_y-wave superfluid. The latter state, that spontaneously breaks time-reversal symmetry, furthermore undergoes a topological p_x+ i p_y to p_x+ i p_y transition at zero chemical potential mu. In two-dimensions, for mu>0 it is characterized by a Pfaffian ground state exhibiting topological order and non-Abelian excitations familiar from fractional quantum Hall systems. | | Source: | arXiv, cond-mat/0410620 | | Services: | Forum | Review | PDF | Favorites | |
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