| We study the entanglement spectra of bilayer quantum Hall systems at total filling factor ν=1. In the interlayer-coherent phase at layer separations smaller than a critical value, the entanglement spectra show a striking similarity to the energy spectra of the corresponding monolayer systems around half filling. The transition to the incoherent phase can be followed in terms of low-lying entanglement levels, constituting a link between the entanglement spectrum and a quantum phase transition. Finally, we describe the relation between those two types of spectra in terms of effective thermodynamic quantities. |
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