One-Dimensional Quantum Transport Affected by a Background Medium: Fluctuations versus Correlations

Abstract

We analyze the spectral properties of a very general two-channel fermion-boson transport model in the insulating and metallic regimes, and the signatures of the metal-insulator quantum phase transition in between. To this end we determine the single particle spectral function related to angle-resolved photoemission spectroscopy, the momentum distribution function, the Drude weight and the optical response by means of a dynamical (pseudo-site) density-matrix renormalization group technique for the one-dimensional half-filled band case. We show how the interplay of correlations and fluctuations in the background medium controls the charge dynamics of the system, which is a fundamental problem in a great variety of advanced materials.

6 pages, 5 figures, final version

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Cited by in corpus (9)

• Density waves in strongly correlated quantum chains
• Phase separation in the Edwards model
• 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
• 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
• Quantum transport in an environment parametrized by dispersive bosons
• Metal-insulator transition in the Edwards model
• Charge-order melting in the one-dimensional Edwards model