Correlation-induced metal insulator transition in a two-channel fermion-boson model

Abstract

We investigate charge transport within some background medium by means of an effective lattice model with a novel form of fermion-boson coupling. The bosons describe fluctuations of a correlated background. By analyzing groundstate and spectral properties of this transport model, we show how a metal-insulator quantum phase transition can occur for the half-filled band case. We discuss the evolution of a mass-asymmetric band structure in the insulating phase and establish connections to the Mott and Peierls transition scenarios.

4 pages, 4 figures, 1 table, revised version accepted for publication in Phys. Rev. Lett

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Cited by in corpus (14)

• Fractons from polarons
• Quantum phase transition in a 1D transport model with boson affected hopping: Luttinger liquid versus charge-density-wave behavior
• Density waves in strongly correlated quantum chains
• One-Dimensional Quantum Transport Affected by a Background Medium: Fluctuations versus Correlations
• Phase separation in the Edwards model
• Edwards polaron formation : From one to three dimension
• Analytical calculation of the Green's function and Drude weight for a correlated fermion-boson system
• Charge-density-wave formation in a half-filled fermion-boson transport model: A projective renormalization approach
• Anderson localization versus charge-density-wave formation in disordered electron systems
• A Green's function decoupling scheme for the Edwards fermion-boson model
• Charge-density-wave formation in the Edwards fermion-boson model at one-third band filling
• Metal-insulator transition in the Edwards model
• Charge-order melting in the one-dimensional Edwards model
• Metal-insulator transition of spinless fermions coupled to dispersive optical bosons