Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-06-10
Nucl.Phys. B538 (1999) 309-320
Physics
High Energy Physics
High Energy Physics - Phenomenology
16 pages, Latex, 1 ps figure, now format
Scientific paper
10.1016/S0550-3213(98)00627-0
It is well known that Yang-Mills theory in vacuum has a perturbative instability to spontaneously form a large scale magnetic field (the Savvidy mechanism) and that a constant field is unstable so that a possible ground state has to be inhomogenous over the non-perturbative scale Lambda (the Copenhagen vacuum). We argue that this spontaneous instability does not occur at high temperature when the induced field strength gB ~ Lambda^2 is much weaker than the magnetic mass squared (g^2T)^2. At high temperature oscillations of gauge fields acquire a thermal mass M ~ gT and we show that this mass stabilizes a magnetic field which is constant over length scales shorter than the magnetic screening length (g^2T)^{-1}. We therefore conclude that there is no indication for any spontaneous generation of weak non-abelian magnetic fields in the early universe.
Elmfors Per
Persson David
No associations
LandOfFree
Stability of large scale chromomagnetic fields in the early universe 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 Stability of large scale chromomagnetic fields in the early universe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stability of large scale chromomagnetic fields in the early universe will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-611594