Renormalization group study of the 1d polaron problem

Details Renormalization group study of the 1d polaron problem Renormalization group study of the 1d polaron problem

2000-03-10

arxiv.org/abs/cond-mat/0003176v1

Physics

Condensed Matter

Statistical Mechanics

4 pages, 6 figures

Scientific paper

10.1103/PhysRevB.62.2990

We investigate the one-dimensional polaron problem and calculate the ground
state energy and the effective mass. We use a real-time renormalization group
method and compare our results with first and second order perturbation theory,
with Feynman's variational principle and with the method of Lee, Low and Pines.

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