492 research outputs found
SU(2) and SU(3) Yang-Mills thermodynamics and some implications
We sketch the development of effective theories for SU(2) and SU(3)
Yang-Mills thermodynamics. The most important results are quoted and some
implications for particle physics and cosmology are discussed.Comment: 18 pages, 5 figures, v3: consequences of a change in the evolution
equations for the effective couplings implemented, practically no change in
the physics, erratum to appear in the journal-published versio
Fundamental and effective SU(2) Yang-Mills vertices
Calorons and plane waves within and in between them {\sl collectively} give
rise to a thermal ground state. The latter provides a homgeneous energy density
and a negative pressure, and it induces quasiparticle masses to part of the
propagating spectrum of deconfining SU(2) Yang-Mills thermodynamics (dynamical
gauge-symmetry breaking). In the present talk we discuss the role of a {\sl
single} caloron in inducing effective local vertices, characterized by powers
of , mediating the interaction of plane waves which propagate over large
distances. The constraints on momentum transfers through effective 4-vertices
are revisited.Comment: 4 pages, no figur
SU(2,CMB), the nature of light and acceleratedcosmological expansion
We present quantitative and qualitative arguments in favor of the claim that, within the present cosmological epoch, the U(1)gamma factor in the Standard Model is an effective manifestation of SU(2) pure gauge dynamics of Yang-Mills scale Lambda ~ 10^-4 eV. Results for the pressure and the energy density in the deconfining phase of this theory, obtained in a nonperturbative and analytical way, support this connection in view of large-angle features inherent in the map of the CMB temperature fluctuations and temperature-polarization cross correlations
The isolated electron: De Broglie's "hidden" thermodynamics, SU(2) Quantum Yang-Mills theory, and a strongly perturbed BPS monopole
Based on a recent numerical simulation of the temporal evolution of a
spherically perturbed BPS monopole, SU(2) Yang-Mills thermodynamics, Louis de
Broglie's deliberations on the disparate Lorentz transformations of the
frequency of an internal "clock" on one hand and the associated quantum energy
on the other hand, and postulating that the electron is represented by a
figure-eight shaped, self-intersecting center vortex loop in SU(2) Quantum
Yang-Mills theory we estimate the spatial radius of this
self-intersection region in terms of the electron's Compton wave length
. This region, which is immersed into the confining phase,
constitutes a blob of deconfining phase of temperature mildly above the
critical temperature carrying a frequently perturbed BPS monopole (with a
magnetic-electric dual interpretation of its charge w.r.t. U(1)SU(2)).
We also establish a quantitative relation between rest mass of the
electron and SU(2) Yang-Mills scale , which in turn is defined via
. Surprisingly, turns out to be comparable to the Bohr radius while
the core size of the monopole matches , and the correction to the
mass of the electron due to Coulomb energy is about 2\,\%.Comment: 15 pp, 3 figs, v2: mistake in estimating the core-size of monopole
rectified and typos eliminate
Deconfining by Winding
A model for the quantum effective description of the vacuum structure of
thermalized SU(3) Yang-Mills theory is proposed. The model is based on Abelian
projection leading to a Ginzburg-Landau theory for the magnetic sector. The
possibility of topologically non-trivial, effective monopole fields in the
deconfining phase is explored. These fields are assumed to be
Bogomol'nyi-Prasad-Sommerfield saturated solutions along the compact, euclidean
time dimension. Accordingly, a gauge invariant interaction for the monopole
fields is constructed.
Motivated by the corresponding lattice results the vacuum dynamics is assumed
to be dominated by the monopole fields. A reasonable value for the critical
temperature is obtained, and the partial persistence of non-perturbative
features in the deconfining phase of SU(3) Yang-Mills theory, as it is measured
on the lattice, follows naturally.Comment: 10 pages, 5 figures, Talk at conference "Lepton Scattering, Hadrons
and QCD, 26.3.-5.4 2001, Adelaide, Australi
- …