Abstract
We compare the spectrum for the three band (Emery) Model, the Kondo Heisenberg model and the t-J model within the lowest order self consistent approximation. The band minima for the three band model is at (π/2,π/2) and its bandwidth is proportional to J, as in the case with the other two models. The quasiparticle wavefunction is calculated to the same level of approximation, and used to demonstrate that the quasiparticle in the three band model cannot be described as a moving singlet.
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