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Non-Fermi Liquids in the Extended Hubbard Model

Qimiao Si
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Abstract

I summarize recent work on non-Fermi liquids within certain generalized Anderson impurity model as well as in the large dimensionality ($D$) limit of the two-band extended Hubbard model. The competition between local charge and spin fluctuations leads either to a Fermi liquid with renormalized quasiparticle excitations, or to non-Fermi liquids with spin-charge separation. These results provide new insights into the phenomenological similarities and differences between different correlated metals. While presenting these results, I outline a general strategy of local approach to non-Fermi liquids in correlated electron systems.

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Qimiao Si. 1996-09-20. Non-Fermi Liquids in the Extended Hubbard Model. https://doi.org/10.1088/0953-8984%2F8%2F48%2F019

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