Spectral Properties and Bandstructure of Correlated Electron Systems

Abstract

We present $\vec{k}$-dependent one-particle spectra and corresponding effective bandstructures for the $2d$ Hubbard model calculated within the dynamical molecular field theory (DMFT). This method has proven to yield highly nontrivial results for a variety of quantities but the question remains open to what extent it is applicable to relevant physical situations. To address this problem we compare our results for spectral functions to those obtained by QMC simulations. The good agreement supports our notion that the DMFT is indeed a sensible ansatz for correlated models even in to $d=2$.

arXiv commentPaper presented at SCES '95, Sept. 27 - 30 1995, Goa. To be published in Physica B. 10 pages, figures included

References in corpus (3)

• Anomalous Normal-State Properties of High-T${}_c$ Superconductors -- Intrinsic Properties of Strongly Correlated Electron Systems?
• Quasiparticle Dispersion of the 2D Hubbard Model: From an Insulator to a Metal
• Magnetic and Dynamic Properties of the Hubbard Model in Infinite Dimensions

Cited by in corpus (5)

• Van Hove singularities in the paramagnetic phase of the Hubbard model: a DMFT study
• Spectral and transport properties of doped Mott-Hubbard systems with incommensurate magnetic order
• Memory function approach to the Hall constant in strongly correlated electron systems
• Slave fermion interpretation of the pseudogap in doped Mott insulators
• Effects of spin fluctuations in the t-J model