COMBINING MCRG AND FOURIER ACCELERATED LANGEVIN ALGORITHM

Details COMBINING MCRG AND FOURIER ACCELERATED LANGEVIN ALGORITHM COMBINING MCRG AND FOURIER ACCELERATED LANGEVIN ALGORITHM

1995-05-24

arxiv.org/abs/hep-lat/9505018v1

Phys.Lett. B356 (1995) 329-336

Physics

High Energy Physics

High Energy Physics - Lattice

11 plain tex pages and 1 figure in a compressed file

Scientific paper

10.1016/0370-2693(95)00839-D

We study the implementation of Monte Carlo renormalization group (MCRG) in momentum space. This technique is most efficient when used in combination with a Fourier accelerated Langevin algorithm. As a benchmark we calculate the critical exponents $\nu$ and $\eta$ in the vicinity of both the gaussian and the Wilson fixed point in $\lambda \phi^4_3$. The results are very competitive with alternative analytical methods and require a moderate computational effort only.

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