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Precise spectral asymptotics, exponential localization, and spectral gap estimates for the three-boson lattice Schrödinger operator
We present a corrected strong-coupling Birman-Schwinger analysis of the three-boson lattice Schroedinger operator on Z^2 at the exceptional quasimomentum K=pi. First, we give an exact closed-form benchmark for the fiber Fredholm determinant at a flat momentum, valid for every K, obtained via a unifo
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