Ground state properties of the one-dimensional electron liquid

Details Ground state properties of the one-dimensional electron liquid Ground state properties of the one-dimensional electron liquid

2011-02-18

arxiv.org/abs/1102.3854v2

Phys. Rev. B 83, 245114 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

13 pages, 16 figures, 5 tables

Scientific paper

10.1103/PhysRevB.83.245114

We present calculations of the energy, pair correlation function (PCF), static structure factor (SSF), and momentum density (MD) for the one-dimensional electron gas using the quantum Monte Carlo method. We are able to resolve peaks in the SSF at even-integer-multiples of the Fermi wave vector, which grow as the coupling is increased. Our MD results show an increase in the effective Fermi wave vector as the interaction strength is raised in the paramagnetic harmonic wire; this appears to be a result of the vanishing difference between the wave functions of the paramagnetic and ferromagnetic systems. We have extracted the Luttinger liquid exponent from our MDs by fitting to data around the Fermi wave vector, finding good agreement between the exponent of the ferromagnetic infinitely-thin wire and the ferromagnetic harmonic wire.

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