Ground-state properties of the one-dimensional electron liquid

R. M. Lee and N. D. Drummond
Phys. Rev. B 83, 245114 – Published 22 June 2011

Abstract

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 kF, finding good agreement between the exponent of the ferromagnetic infinitely thin wire and the ferromagnetic harmonic wire.

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  • Received 18 February 2011

DOI:https://doi.org/10.1103/PhysRevB.83.245114

©2011 American Physical Society

Authors & Affiliations

R. M. Lee

  • Theory of Condensed Matter Group, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, United Kingdom

N. D. Drummond

  • Department of Physics, Lancaster University, Lancaster LA1 4YB, United Kingdom

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Issue

Vol. 83, Iss. 24 — 15 June 2011

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