Dynamics of a single exciton in strongly correlated bilayers

@article{Rademaker2012DynamicsOA,
  title={Dynamics of a single exciton in strongly correlated bilayers},
  author={Louk Rademaker and Kai-Hsin Wu and Jan Zaanen},
  journal={New Journal of Physics},
  year={2012},
  volume={14}
}
We formulated an effective theory for a single interlayer exciton in a bilayer quantum antiferromagnet, in the limit when the holon and doublon are strongly bound onto one interlayer rung by the Coulomb force. Upon using a rung linear spin-wave approximation of the bilayer Heisenberg model, we calculated the spectral function of the exciton for a wide range of the interlayer Heisenberg coupling α = J⊥/Jz. In the disordered phase at large α, a coherent quasi-particle peak appears, representing… 
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5 Citations

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