Comments on: Gluon and ghost propagators on the lattice

By: Gluon propagator « The Gauge Connection

Gluon propagator « The Gauge Connection — Sun, 07 Sep 2008 18:00:06 +0000

[...] and the propagators in this way. The propagators have been obtained on very large lattice (see here). We have often commented about them and we can give a summary [...]

By: QCD and lattice computations « The Gauge Connection

QCD and lattice computations « The Gauge Connection — Tue, 02 Sep 2008 20:07:06 +0000

[...] aware of them. This is the situation seen on the computations of gluon and ghost propagators (see here). The situation in this case if far more simpler as there are no quarks. This is pure Yang-Mills [...]

By: Should we laugh? « The Gauge Connection

Should we laugh? « The Gauge Connection — Tue, 02 Sep 2008 09:11:57 +0000

[...] computations on huge lattices. We would like to remember here that huge lattices arrived at (see here) and now there is no more interest to increase volumes. So, we have here two researchers, just two, [...]

By: mfrasca

mfrasca — Wed, 27 Aug 2008 07:24:49 +0000

Yes, these results apply just when no quark is present, just gluons. It is pure Yang-Mills. Anyhow, recent computations by MILC Collaboration show that presence of quarks does not change this picture dramatically and this means that quark contribution is there but the behavior of gluon propagator in the infrared is preserved. In order to have an idea of what is going on just read my post

http://marcofrasca.wordpress.com/2008/06/27/meaning-of-lattice-results-for-the-gluon-propagator/

The beautiful thing is that, once the gluon propagator is known one also knows interquark potential.

Marco

By: Alejandro Rivero

Alejandro Rivero — Wed, 27 Aug 2008 00:03:01 +0000

Figures 1 and 2 of _340 are impressive. What is going on?

Also, I assume the results are for pure QCD, is it? No fermions there? It is even more fantastic, because it stresses a beyond-standard-model fact: that the mass values of the quarks conspire to live near the peak of the gluon dress. So what will be happen if/when we allow quark loops to contribute to the dressing?

By: Meaning of lattice results for the gluon propagator « The Gauge Connection

Meaning of lattice results for the gluon propagator « The Gauge Connection — Fri, 27 Jun 2008 13:50:16 +0000

[...] We have shown the results of the lattice computations of the gluon propagator here. It would be important to get an understanding of what is going on in the low momentum limit. [...]