Charge and Spin Quantum Fluids Generated by Many-Electron Interactions

Details Charge and Spin Quantum Fluids Generated by Many-Electron Interactions Charge and Spin Quantum Fluids Generated by Many-Electron Interactions

2003-02-03

arxiv.org/abs/cond-mat/0302044v4

Published in Nuclear Physics B 683 [FS], 387-422 (2004)

Physics

Condensed Matter

Strongly Correlated Electrons

25 pages, no figures

Scientific paper

10.1016/j.nuclphysb.2004.01.036

In this paper we describe the electrons of the 1D Hubbard model by a fluid of unpaired rotated electrons and a fluid of zero-spin rotated-electron pairs. The rotated electrons are related to the original electrons by a mere unitary transformation. For all finite values of energy and for the whole parameter space of the model this two-fluid picture leads to a description of the energy eigenstates in terms of occupancy configurations of $\eta$-spin 1/2 holons, spin 1/2 spinons, and $c$ pseudoparticles only. The electronic degrees of freedom couple to external charge (and spin) probes through the holons and $c$ pseudoparticles (and spinons). Our results refer to very large values of the number of lattice sites $N_a$. The holon (and spinon) charge (and spin transport is made by $2\nu$-holon (and $2\nu$-spinon) composite pseudoparticles such that $\nu=1,2,...$.

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