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26 papers · 1 filter
Two--Loop Anomalous Dimension Matrix for Weak Non-Leptonic Decays II:
Andrzej J. Buras, Matthias Jamin, Markus E. Lautenbacher
We calculate the two--loop anomalous dimension matrix to order $\ord(α_e α_s)$ in the dimensional regularization scheme with anticommuting (NDR) which is necess…
The Two-Loop Anomalous Dimension Matrix for Weak Non-Leptonic Decays I:
Andrzej J. Buras, Matthias Jamin, Markus E. Lautenbacher +1
We calculate the two-loop anomalous dimension matrix involving current-current operators, QCD penguin operators, and electroweak penguin operator…
Jordanian Solutions of Simplex Equations
Holger Ewen, Oleg Ogievetsky
We construct for all a solution of the Frenkel--Moore --simplex equation which generalizes the --matrix for the Jordanian quantum group.
Harmonic potentials for symmetric quaternionic sigma-models
A. Galperin, O. Ogievetsky
A reference has been corrected
Scattering in a Simple 2-d Lattice Model
C. R. Gattringer, I. Hip, C. B. Lang
Lüscher has suggested a method to determine phase shifts from the finite volume dependence of the two-particle energy spectrum. We apply this to two models in d=2: (a) the Ising mo…
Non-Abelian Boltzmann Equation for Mixing and Decoherence
G. Raffelt, G. Sigl, L. Stodolsky
We consider particle oscillations and their damping in second-quantized form. We find that the damping or "decoherence" may be described by a Boltzmann-like collision integral with…