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Asymptotic series for low-energy excitations of the Fröhlich Polaron at strong coupling (2306.16373v2)
Published 28 Jun 2023 in math-ph, cond-mat.other, and math.MP
Abstract: We consider the confined Fr\"ohlich polaron and establish an asymptotic series for the low-energy eigenvalues in negative powers of the coupling constant. The coefficients of the series are derived through a two-fold perturbation approach, involving expansions around the electron Pekar minimizer and the excitations of the quantum field.
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