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Phys. Rev. Lett. 91, 085302 (2003) [4 pages]

Effective Mass of Two-Dimensional 3He

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J. Boronat1, J. Casulleras1, V. Grau1, E. Krotscheck2, and J. Springer2
1Departament de Fisica i Enginyera Nuclear, Campus Nord B4-B5, Universitat Politécnia de Catalunya, E-08034 Barcelona, Spain
2Institut für Theoretische Physik, Johannes Kepler Universität, A 4040 Linz, Austria

Received 12 June 2003; published 21 August 2003

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 sum rules. 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.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.91.085302
DOI:
10.1103/PhysRevLett.91.085302
PACS:
67.57.Pq