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Luttinger-liquid behavior of one-dimensional He-3
Astrakharchik, Grigori; Boronat Medico, Jordi
Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear; Universitat Politècnica de Catalunya. SIMCON - Grup de Recerca de Simulació per Ordinador en Matèria Condensada
The ground-state properties of one-dimensional He-3 are studied using quantum Monte Carlo methods. The equation of state is calculated in a wide range of physically relevant densities and is well interpolated by a power-series fit. The Luttinger liquid theory is found to describe the long-range properties of the correlation functions. The density dependence of the Luttinger parameter is explicitly found, and interestingly it shows a nonmonotonic behavior. Depending on the density, the static structure factor can be a smooth function of the momentum or might contain a peak of a finite or infinite height. Although no phase transitions are present in the system, we identify a number of physically different regimes, including an ideal Fermi gas, a
Àrees temàtiques de la UPC::Física
Electron gas
Monte Carlo method
Bose-Einstein gas
Luttinger liquids
Ground-state
Electron-gas
Anderson localization
Single-barrier
Quantum fluids
Monte-Carlo
Bose-gas
Transport
Crystal
Systems
Montecarlo, Mètode de
Condensació de Bose-Einstein
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
info:eu-repo/semantics/publishedVersion
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