Renormalization Group Therapy

Details Renormalization Group Therapy Renormalization Group Therapy

2007-02-08

arxiv.org/abs/hep-lat/0702015v1

Phys.Rev.D75:076002,2007

Physics

High Energy Physics

High Energy Physics - Lattice

18 pages, 9 figures, 9 tables

Scientific paper

10.1103/PhysRevD.75.076002

We point out a general problem with the procedures commonly used to obtain improved actions from MCRG decimated configurations. Straightforward measurement of the couplings from the decimated configurations, by one of the known methods, can result into actions that do not correctly reproduce the physics on the undecimated lattice. This is because the decimated configurations are generally not representative of the equilibrium configurations of the assumed form of the effective action at the measured couplings. Curing this involves fine-tuning of the chosen MCRG decimation procedure, which is also dependent on the form assumed for the effective action. We illustrate this in decimation studies of the SU(2) LGT using Swendsen and Double Smeared Blocking decimation procedures. A single-plaquette improved action involving five group representations and free of this pathology is given.

Affiliated with

Also associated with

No associations

Rating

Renormalization Group Therapy does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Renormalization Group Therapy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Renormalization Group Therapy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-8187