The sphaleron rate in SU(N) gauge theory
نویسندگان
چکیده
منابع مشابه
3 The sphaleron transition rate
An exactly solvable sphaleron model in 3 + 1 spacetime dimensions is described1
متن کاملComputing the Strong Sphaleron Rate
We measure the diffusion constant for Chern-Simons number for classical, lattice SU(3) Yang-Mills theory, using a generalization of the topological definition of Chern-Simons number developed recently by Moore and Turok. The diffusion constant is much larger than that for SU(2), even before the ratio of coupling constants has been accounted for, which implies that chiral quark number is efficie...
متن کاملSphaleron rate in the symmetric electroweak phase
Recently Bödeker has presented an effective infrared theory for the dynamics of Yang-Mills theory, suitable for studying the rate of baryon number violation in the early universe. We extend his theory to include Higgs fields, and study how much the Higgs affects the baryon number violation rate in the symmetric phase, at the phase coexistence temperature of a first order electroweak phase trans...
متن کاملThe Sphaleron Rate: Bödeker’s Leading Log
Bödeker has recently shown that the high temperature sphaleron rate, which measures baryon number violation in the hot standard model, receives logarithmic corrections to its leading parametric behavior; Γ = κ[log(mD/g 2T )+O(1)](g2T /mD)α 5 WT 4. After discussing the physical origin of these corrections, I compute the leading log coefficient numerically; κ′ = 10.8 ± 0.7. The log is fairly smal...
متن کاملDo We Understand the Sphaleron Rate?
I begin by answering a different question, “Do we know the sphaleron rate?” and conclude that we do. Then I discuss a crude but purely analytic picture which provides an estimate of the sphaleron rate within the context of Bödeker’s effective theory. The estimate, which comes surprisingly close to the numerically determined sphaleron rate, gives a physical picture of baryon number violation in ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2011
ISSN: 1029-8479
DOI: 10.1007/jhep02(2011)105