3,523,207 research outputs found
Lie algebras of triangular polynomial derivations and an isomorphism criterion for their Lie factor algebras
The ideals of the Lie algebras of unitriangular polynomial derivations are
classified. An isomorphism criterion is given for the Lie factor algebras of
the Lie algebras of unitriangular polynomial derivations.Comment: 33 page
Colour effective particles and confinement
Here I present a brief review of papers where the idea is pushed forward that
colour confinement is realized by singular interaction at large distances
between colour effective particles (constituent quarks, diquarks, massive
effective gluons).Comment: Talk at Workshop ''Hadron Structure and QCD'' Gatchina, Russia, July
5 - July 9, 201
Radiative decays of quarkonium states, momentum operator expansion and nilpotent operators
We present the method of calculation of radiative decays of composite
quark-antiquark systems with different J^{PC}: (Q\bar Q)_{in} -> gamma (Q\bar
Q)_{out}. The method is relativistic invariant, it is based on the double
dispersion relation integrals over the masses of composite mesons, it can be
used for the high spin particles and provides us with the gauge invariant
transition amplitudes. We apply this method to the case when the photon is
emitted by a constituent in the intermediate state (additive quark model). We
perform the momentum operator expansion of the spin amplitudes for the decay
processes. The problem of nilpotent spin operators is discussed.Comment: 21 pages, 1 figur
Two-dimensional model of intrinsic magnetic flux losses in helical flux compression generators
Helical Flux Compression Generators (HFCG) are used for generation of
mega-amper current and high magnetic fields. We propose the two dimensional
HFCG filament model based on the new description of the stator and armature
contact point. The model developed enables one to quantitatively describe the
intrinsic magnetic flux losses and predict the results of experiments with
various types of HFCGs. We present the effective resistance calculations based
on the non-linear magnetic diffusion effect describing HFCG performance under
the strong conductor heating by currents.Comment: 29 pages,18 figure
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