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arXiv · 2004.09562

Fermi-liquid behaviors in three-dimensional polaron system with tunable dispersion

Chen-Huan Wu
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Abstract

We investigate the electronic properties and electron correlations in a three-dimensional (3D) polaron system with tunable dispersion parameter in Fermi-liquid picture. The polaronic coupling is considered as a weakly attractive bare coupling. Both the single and many-polaron, zero and finite-temperature cases are considered in this paper. The physical quantities, including the self-energy, spectral function, optical conductivity (both the planar and 3D one), free energy, and momentum distribution function, are studied and are been verified exhibit Fermi-liquid features. Both the analytic derivation and numerical calculation are done in this paper to make our results reliable.

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Chen-Huan Wu. 2020-04-20. Fermi-liquid behaviors in three-dimensional polaron system with tunable dispersion. https://arxiv.org/abs/2004.09562

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