Correlated ground states with (spontaneously) broken time-reversal symmetry

Details Correlated ground states with (spontaneously) broken time-reversal symmetry Correlated ground states with (spontaneously) broken time-reversal symmetry

1996-04-22

arxiv.org/abs/cond-mat/9604138v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures; fig. 2 corrected & 2 references added

Scientific paper

10.1016/S0038-1098(97)00312-8

We propose a self-consistent scheme for the determination of the ground-state (GS) properties of interacting electrons in a magnetic field, and of systems whose GS's time-reversal-symmetry (TRS) is spontaneously broken. It is based on a newly-developed many-body perturbation theory that is valid, irrespective of the strength of correlation, provided the GS number densities $n_{\uparrow}({\bf r})$, $n_{\downarrow}({\bf r})$, and the {\sl total} paramagnetic particle flux density are pure-state non-interacting $v$-representable. Our approach can in particular be applied to (modulated) two-dimensional electron systems in the fractional quantum-Hall regime.

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