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19 papers · 1 filter
Metal-Insulator transition in the Generalized Hubbard model
Anatoly A. Ovchinnikov
We present the exact ground-state wave function and energy of the generalized Hubbard model, subjected to the condition that the number of double occupied sites is conserved, for a…
BRST formalism for systems with higher order derivatives of gauge parameters
Khazret S. Nirov
For a wide class of mechanical systems, invariant under gauge transformations with higher (arbitrary) order time derivatives of gauge parameters, the equivalence of Lagrangian and…
Which Higgs-Yukawa systems can possess non-trivial fixed points
Sergei V. Zenkin
We argue that non-trivial fixed points bordering on the paramagnetic and ferromagnetic phases are most likely to exist in the Higgs-Yukawa systems that have a connected domain with…
at the -factory
K. G. Chetyrkin, J. H. Kühn
A systematic theoretical evaluation of the cross section for hadron production in electron-positron collisions in the energy range just below the meson threshold is presented w…
Mass singularities in light quark correlators: the strange quark case
K. G. Chetyrkin, C. A. Dominguez, D. Pirjol +1
The correlators of light-quark currents contain mass-singularities of the form log(m^2/Q^2). It has been known for quite some time that these mass- logarithms can be absorbed into…
Estimates of the higher-order QCD corrections: Theory and Applications
A. L. Kataev, V. V. Starshenko
We consider the further development of the formalism of the estimates of higher-order perturbative corrections in the Euclidean region, which is based on the application of the sch…