Diffusion quantum Monte Carlo calculation of the quasiparticle effective mass of the twodimensional homogeneous electron gas
Abstract
The quasiparticle effective mass is a key quantity in the physics of electron gases, describing the renormalization of the electron mass due to electronelectron interactions. Twodimensional electron gases are of fundamental importance in semiconductor physics, and there have been numerous experimental and theoretical attempts to determine the quasiparticle effective mass in these systems. In this work we report quantum Monte Carlo results for the quasiparticle effective mass of a twodimensional homogeneous electron gas. Our calculations differ from previous quantum Monte Carlo work in that much smaller statistical error bars have been achieved, allowing for an improved treatment of finitesize effects. In some cases we have also been able to use larger system sizes than previous calculations.
 Publication:

Physical Review B
 Pub Date:
 January 2013
 DOI:
 10.1103/PhysRevB.87.045131
 arXiv:
 arXiv:1208.6317
 Bibcode:
 2013PhRvB..87d5131D
 Keywords:

 73.20.r;
 71.10.Ay;
 02.70.Ss;
 Electron states at surfaces and interfaces;
 Fermiliquid theory and other phenomenological models;
 Quantum Monte Carlo methods;
 Condensed Matter  Quantum Gases
 EPrint:
 Phys. Rev. B 87, 045131 (2013)