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41 papers · 1 filter
Interpreting virtual photon interactions in terms of parton distribution functions
Jiri Chyla, Marek Tasevsky
Interactions of virtual photons are analyzed in terms of photon structure. It is argued that the concept of parton distribution functions is phenomenologically very useful even for…
Hard Single Diffraction in pbarp Collisions at root-s = 630 and 1800 GeV
The D0 Collaboration, B. Abbott
Using the D0 detector, we have studied events produced in proton-antiproton collisions that contain large forward regions with very little energy deposition (``rapidity gaps'') and…
Nonlocal kinetic theory
Klaus Morawetz, Václav Špička, Pavel Lipavský
The short time behavior of a disturbed system is influenced by off-shell motion and best characterized by the reduced density matrix possessing high energetic tails. We present ana…
Lattice polaron formation: Effects of non-screened electron-phonon interaction
H. Fehske, J. Loos, G. Wellein
We explore the quasiparticle properties of lattice polarons on the basis of a quite general electron-phonon Hamiltonian with a long-range displacement-type of interaction. To treat…
Weak axial exchange currents for the Bethe-Salpeter equation
F. C. Khanna, E. Truhlik
We construct weak axial one-boson exchange currents for the Bethe-Salpeter equation, starting from chiral Lagrangians of the N-Δ(1236)-pi-rho-a_1-omega system. The currents fulfil…
Quantum Zeno effect in a probed downconversion process
J. Rehacek, J. Perina, P. Facchi +2
The distorsion of a spontaneous downconvertion process caused by an auxiliary mode coupled to the idler wave is analyzed. In general, a strong coupling with the auxiliary mode tend…