Fractionalization via Z(2) gauge fields at a cold-atom quantum Hall transition.

@article{Barlas2011FractionalizationVZ,
  title={Fractionalization via Z(2) gauge fields at a cold-atom quantum Hall transition.},
  author={Yafis Barlas and Kun Yang},
  journal={Physical review letters},
  year={2011},
  volume={106 17},
  pages={
          170403
        }
}
  • Y. Barlas, Kun Yang
  • Published 30 November 2010
  • Physics, Medicine
  • Physical review letters
We study a single species of fermionic atoms in an "effective" magnetic field at total filling factor ν(f)=1, interacting through a p-wave Feshbach resonance, and show that the system undergoes a quantum phase transition from a ν(f)=1 fermionic integer quantum Hall state to ν(b)=1/4 bosonic fractional quantum Hall state as a function of detuning. The transition is in the (2+1)D Ising universality class. We formulate a dual theory in terms of quasiparticles interacting with a Z(2) gauge field… 
1 Citations
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References

SHOWING 1-4 OF 4 REFERENCES
Quantum Field Theory of Many-body Systems: From the Origin of Sound to an Origin of Light and Electrons
1. Introduction 2. Path integral formulation of quantum mechanics 3. Interacting boson systems 4. Free fermion systems 5. Interacting fermion systems 6. Quantum gauge theories 7. Theory of quantum
Quantum phase transitions
Nature abounds with phase transitions. The boiling and freezing of water are everyday examples of phase transitions, as are more exotic processes such as superconductivity and superfluidity. The
M.W.J.Romans, R.A.Duine, S.Sachdev and H.T.C.Stoof
  • Weichman, Phys. Rev. Lett. 92,
  • 2004
Phys
  • Rev. Lett. 86, 1881
  • 2001