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- Max Planck Institute for Mathematics in the SciencesDE139 papers
- Deutsches Elektronen-Synchrotron DESYDE122 papers
- University of RegensburgDE105 papers
- University of EdinburghGB81 papers
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- Centre National de la Recherche ScientifiqueFR76 papers
- Humboldt-Universität zu BerlinDE72 papers
- Joint Institute for Nuclear ResearchRU56 papers
- Forschungszentrum JülichDE54 papers
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- University of CopenhagenDK44 papers
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47 papers · 1 filter
Magnetic properties of the 2D t-t'-Hubbard model
U. Trapper, H. Fehske, D. Ihle
The two-dimensional (2D) t-t'-Hubbard model is studied within the slave-boson (SB) theory. At half-filling, a paramagnetic to antiferromagnetic phase transition of first order at a…
Curvature-induced phase transition in three-dimensional Thirring model
B. Geyer, Y. I. Shil'nov
The effective potential of composite fermion fields in three-dimensional Thirring model in curved spacetime is calculated in linear curvature approximation. The phase transition ac…
Hadronic photon interactions at high energies
F. W. Bopp, R. Engel, A. Rostovtsev
A simple phenomenological introduction to the physics of multi-pomeron exchange amplitudes in connection with the Abramovski-Gribov-Kancheli (AGK) cutting rules is given. The AGK c…
Interaction dependence of composite fermion effective masses
Uwe Girlich, Meik Hellmund
We estimate the composite fermion effective mass for a general two particle potential r^{-α} using exact diagonalization for polarized electrons in the lowest Landau level on a sph…
Gauge Dependence of the Effective Average Action in Einstein Gravity
S. Falkenberg, S. D. Odintsov
We study the gauge dependence of the effective average action Gamma_k and Newtonian gravitational constant using the RG equation for Gamma_k. Then we truncate the space of action f…
How to measure diffraction in two-photon collisions at LEP
R. Engel, A. Rostovtsev
The possibility to measure diffraction dissociation in collisions of real and virtual photons at LEP2 is pointed out.