Measuring the Broken Phase Sphaleron Rate Nonperturbatively

Details Measuring the Broken Phase Sphaleron Rate Nonperturbatively Measuring the Broken Phase Sphaleron Rate Nonperturbatively

1998-05-08

arxiv.org/abs/hep-ph/9805264v2

Phys.Rev. D59 (1999) 014503

Physics

High Energy Physics

High Energy Physics - Phenomenology

41 pages, 13 figures included with psfig. Some wordings clarified, nothing substantial changed

Scientific paper

10.1103/PhysRevD.59.014503

We present details for a method to compute the broken phase sphaleron rate (rate of hot baryon number violation below the electroweak phase transition) nonperturbatively, using a combination of multicanonical and real time lattice techniques. The calculation includes the ``dynamical prefactor,'' which accounts for prompt recrossings of the sphaleron barrier. The prefactor depends on the hard thermal loops, getting smaller with increasing Debye mass; but for realistic Debye masses the effect is not large. The baryon number erasure rate in the broken phase is slower than a perturbative estimate by about exp(-3.6). Assuming the electroweak phase transition has enough latent heat to reheat the universe to the equilibrium temperature, baryon number is preserved after the phase transition if the ratio of (``dimensionally reduced'' thermal) scalar to gauge couplings (lambda / g^2) is less than .037.

Affiliated with

Also associated with

No associations

Rating

Measuring the Broken Phase Sphaleron Rate Nonperturbatively 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 Measuring the Broken Phase Sphaleron Rate Nonperturbatively, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measuring the Broken Phase Sphaleron Rate Nonperturbatively will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-202606