The effective mass of two--dimensional 3He

Details The effective mass of two--dimensional 3He The effective mass of two--dimensional 3He

2003-07-21

arxiv.org/abs/cond-mat/0307493v1

Physics

Condensed Matter

Statistical Mechanics

4 pages, accepted in PRL

Scientific paper

10.1103/PhysRevLett.91.085302

We use structural information from diffusion Monte Carlo calculations for two--dimensional 3He to calculate the effective mass. Static effective interactions are constructed from the density-- and spin structure functions using sumrules. We find that both spin-- and density-- fluctuations contribute about equally to the effective mass. Our results show, in agreement with recent experiments, a flattening of the single--particle self--energy with increasing density, which eventually leads to a divergent effective mass.

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