Abstract
We present a new variant of a Monte Carlo procedure for euclidean quantum field theories with fermions. On a lattice every term contributing to the expansion of the fermion determinant is interpreted as a configuration of self-avoiding oriented closed loops which represent the fermionic vacuum fluctuations. These loops are related to Symanzik's polymer description of euclidean quantum field theory. The method is extended to the determination of fermionic Green's functions. We test our method on the Scalapino-Sugar model in one, two, three, and four dimensions. Good agreement with exactly known results is found.
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Communicated by G. Mack
On leave of absence from Freie Universität Berlin
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Karowski, M., Schrader, R. & Thun, H.J. Monte Carlo simulations for quantum field theories involving fermions. Commun.Math. Phys. 97, 5–29 (1985). https://doi.org/10.1007/BF01206176
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DOI: https://doi.org/10.1007/BF01206176