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Charge and Spin Quantum Fluids Generated by Many-Electron Interactions

J. M. P. Carmelo·J. M. Roman·K. Penc
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Abstract

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 $η$-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 $2ν$-holon (and $2ν$-spinon) composite pseudoparticles such that $ν=1,2,...$.

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J. M. P. Carmelo, J. M. Roman, K. Penc. 2004-03-19. Charge and Spin Quantum Fluids Generated by Many-Electron Interactions. https://doi.org/10.1016/j.nuclphysb.2004.01.036

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