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Forschungsbericht 2000
 
 
Institut für Theoretische Physik
Institute of Theoretical Physics

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Research Projects

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Veröffentlichungen / Publications

Computerorientierte Quantenfeldtheorie

Berg, B. A.; Billoire, A.; Janke, W.
Spin Glass Overlap Barriers in Three and Four Dimensions.
Phys. Rev. B 61 (2000) 12143-12150

Bittner, E.; Janke, W.; Markum, H.; Riedler, J.
Quantum Gravity with Matter Fields in Two Dimensions. In: Gausterer, H.; Grosse, H.; Pittner, L. (Eds.): Geometry and Quantum Physics. Proc. 38. Int. Universitätswochen für Kern- und Teilchenphysik, Schladming, Austria; 383
Berlin: Springer-Verlag, 2000

Bittner, E.; Janke, W.; Markum, H.; Riedler, J.
Two-Dimensional Quantum Gravity with Matter Fields.
Nucl. Phys. B (Proc. Suppl.) 83-84 (2000) 739-741

Bittner, E.; Janke, W.; Markum, H.; Riedler, J.
Ising Spins on Discrete Regge Lattices.
Physica A 277 (2000) 204-214

Dillmann, O.; Müller, M.; Janke, W.; Binder, K.
Monte Carlo Study of Critical Point Shifts in Thin Films.In: Landau, D. P.; Lewis, S. P.; Schüttler, H.-B. (Eds.): Computer Simulation Studies in Condensed-Matter Phy- sics XII, 124-128
Berlin: Springer-Verlag, 2000

Janke, W.; Johnston, D. A.
Ising and Potts Models on Quenched Random Gravity Graphs.
Nucl. Phys. B 578 (2000) 681-698

Janke, W.; Johnston, D. A.
Non-Self Averaging in Autocorrelations for Potts Models on Quenched Random Gravity Graphs.
J. Phys. A 33 (2000) 2653-2662

Janke, W.; Johnston, D. A.; Villanova, R.
Spin Models on Random Lattices.
Physica A 281 (2000) 207-220

Janke, W.; Villanova, R.
Critical Behavior of Ising Spins on Three-Dimensional Random Lattices.
Nucl. Phys. B (Proc. Suppl.) 83-84 (2000) 697-699

Weigel, M.; Janke, W.
Universal Amplitude Ratios in Finite-Size Scaling: Three-Dimensional Ising Model.
Nucl. Phys. B (Proc. Suppl.) 83-84 (2000) 721-723

Weigel, M.; Janke, W.
Numerical Extension of CFT Amplitude Universality to Three-Dimensional Systems.
Physica A 281 (2000) 287-294

Weigel, M.; Janke, W.
High-Precision Monte Carlo Study of Universal Correlation Lengths Scaling in Three-Dimensional O(n) Spin Models.
Phys. Rev. B 62 (2000) 6343-6359

Weigel, M.; Janke, W.
Universal Amplitude-Exponent Relation for the Ising Model on Sphere-Like Lattices.
Europhys. Lett. 51 (2000) 578-583


Moleküldynamik / Computersimulation

Fritzsche, S.; Haberlandt, R.; Jost, S.; Schüring, A.
Modelling Diffusion in Zeolites by Molecular Dynamics Simulations .
Molec. Simul. 25 (2000) 27-40

Fritzsche, S.; Wolfsberg, M.; Haberlandt, R.
The Termalization Effect of Lattice Vibrations and Mutual Interaction for the Diffusion of the Methane in a Cation-Free LTA Zeolite.
Chem. Phys. 253 (2000) 283-294


Quantenfeldtheorie

Bluemlein, J.; Geyer, B.; Lazar, M.; Robaschik, D.
Quantum field theoretic treatment of the non-forward Compton amplitude in the ge-neralized Bjorken region.
Nucl. Phys. B (Proc. Suppl.) 89 (2000) 155 - 161

Bordag, M.; Geyer, B.; Mostepanenko, V. M.; Klimchitskaja, G. L.
New measurement of the Casimir force as a test for non-gravitational long-range in-teractions. In: Gnedin, Yu. N. et al. (Eds.): Proc. IV. Alexander Friedman Int. Seminar on Gravitation and Cosmology, St. Petersburg/ Russia, 317-333
Universidad Estadual de Campinas, 2000

Geyer, B.; Gitman, D. M.; Lavrov, P. M.
Covariant quantization with extended BRST symmetry. In: A Khvedelidze, A. et al. (Eds.): Proc. Int. Seminar on Physical variables in Gauge Theories, 118-128
Dubna / Russland, 2000

Geyer, B.; Lazar, M.
Twist decomposition of nonlocal light-ray operators and harmonic tensor functions. In: Doebner, H.-D. et al. (Eds.): Proc. Int. Symp. Quantum Theory and Symmetries, Goslar, July 1999, 362-366
Singapore: World Scientific, 2000

Klein, C.; Richter, O.
Boundary value problems for the stationary axisymmetric Einstein equations - the counterrotating dust disk.
Proc. Eighth Int. Conf. on Hyperbolic Problems, Magdeburg 2000

Klein, C.; Richter, O.
Physically realistic solutions to the Ernst equation on hyperelliptic Riemann surfaces. Proc. Ninth Marcel Grossmann Meeting, Rom 2000

Rudolph, G.; Schmidt, M.; Volobuev, I. P.
Howe dual pairs and the structure of orbit space. In: Levtchenko, B. B. (Ed.): Proc. XIV. Workshop on High Energy Physics and Quantum Field Theory, 467-472
Moscow University, 2000


Theorie der Elementarteilchen

Chernodub, M. N.; Ilgenfritz, E.-M.; Schiller, A.
Vortex Profiles and vortex interactions at the weak crossover.
Nucl. Phys. (Proc.Suppl.) 83-84 (2000) 571-573

Chernodub, M. N.; Ilgenfritz, E.-M. ; Schiller, A.
Embedded vortices and their interactions at electroweak crossover.
Proc. Dubna Workshop Oct 5-9,1999
Dubna / Russland, 2000

Ciuchini, M.; Derkachov, S. E.; Gracey, J. A.; Manashov, A. N.
Computation of quark mass anomalous dimension at O(1/N(f)**2) in quantum-chro-modynamics.
Nucl. Phys. B 579 (2000) 56

Denner; A.; Dittmaier; S.; Roth, M.; Wackeroth, D.
Electroweak radiative corrections to off-shell W-pair production.
Proc. DPF 2000 meeting
Columbus (OH) / USA, 2000

Denner; A.; Dittmaier, S.; Roth, M.; Wackeroth, D.
Electroweak precision physics at e+ e- colliders with Racoon WW.
Proc. 22nd annual MRST Conference on Theoretical High Energy
Rochester, New York / USA, 2000

Denner, A.; Dittmaier, S.; Roth, M.; Wackeroth, D.
Radiative corrections to e+ e- -> WW -> 4f with Racoon WW.
Nucl.Phys. B (Proc.Suppl.) 89 (2000) 100

Denner, A.; Dittmaier, S.; Roth, M.; Wackeroth, D.
Electroweak radiative corrections to e+e- -> WW -> 4 fermions in double-pole appro-ximation - the Racoon WW approach.
Nucl.Phys. B 587 (2000) 67

Denner, A.; Dittmaier, S.; Roth, M.; Wackeroth, D.
Precise predictions for W-pair production at LEP2 with Racoon WW.
Proc. 35th Rencontres de Moriond: Electroweak Interactions and Unified Theories, Les Arcs / France, 2000

Denner, A.; Dittmaier, S.; Roth, M.; Wackeroth, D.
W-pair production at future e+e- colliders: precise predictions from Racoon WW.
EPJ direct 2 C 4 (2000) 1

Denner, A.; Dittmaier, S.; Roth, M.; Wackeroth, D.
Four-fermion production with Racoon WW.
J. Phys. G 26 (2000) 593

Denner, A.; Dittmaier, S.; Roth, M.; Wackeroth, D.
O(alpha) corrections to e+e- -> WW -> 4 fermions (+gamma): first numerical results from Racoon WW.
Phys.Lett. B 475 (2000) 127

Derkachov, S.; Karakhanian, D.; Kirschner, R.
Heisenberg spin chains based on sl(2|1) symmetry.
Nucl. Phys. B 583 (2000) 691

Derkachov. S. E.; Korchemsky, G. P.; Manashov, A. N.
Evolution equations for quark gluon distributions in multi-color QCD and open spin chains.
Nucl. Phys. B 566 (2000) 203

Hagler, P.; Kirschner, R.; Schafer, A.; Szymanowski, L.; Teryaev, O.
Heavy quark hadroproduction as a test of the effective BFKL q anti-q vertex.
Phys. Rev. D 62 (2000) 071502

Ivanov, D. Y.; Kirschner, R.; Schafer, A.; Szymanowski, L.
The light vector meson photoproduction at large t.
Phys. Lett. B 478 (2000) 101

Karakhanian, D. R.; Kirschner, R.
High-energy scattering in gauge theories and integrable spin chains.
Fortsch. Phys. 48 (2000) 139

Kuraev, E. A.; Schiller, A.; Serbo, V. G.; Shaikhatdenov, B. G.
Helicity amplitudes for the small angle process e+e- ---> e- gamma gamma + e+-with both photons along one direction and its cross channel.
Nucl. Phys. B 570 (2000) 359-378

Rupp, Ch.; Scharf, R.; Sibold, K.
Susy Ward identity and its use in SQED.
Nucl.Phys B (Proc. Suppl.) 89 (2000) 272


Savvidy, G. K.
Loop transfer matrix and loop quantum mechanics.
J. High Energy Physics (Trieste) 9 (2000) 44


Physik der kondensierten Materie

Behn, U.
On-off intermittency and stochastic stability in nematics driven by multiplicative noise. In: Freund, J. A.; Pöschel, T. (Eds.): Stochastic Processes in Physics, Chemistry and Biology, Lecture Notes in Physics 557, 304-315
Berlin / Heidelberg: Springer-Verlag, 2000

Fehske, H.; Schindelin, C.; Weiße, A.; Büttner, H.; Ihle, D.
Quantum to classical crossover in the 2D easy-plane XXZ model.
Braz. J. Phys. 30 (2000) 720-724

Schindelin, C.; Fehske, H.; Büttner, H.; Ihle, D.
Spin-correlation functions and susceptibilities in the easy-plane XXZ chain.
Phys. Rev. B 62 (2000) 12141-12145

Schindelin, C.; Ihle, D.; Drechsler, S.-L.; Fehske, H.
Spin correlation functions and Néel order in the 2D Heisenberg model: effects of spatial anisotropy.
Physica B 281-282 (2000) 819-820

Siurakshina, L.; Ihle, D.; Hayn, R.
Theory of magnetic order in the three-dimensional spatially anisotropic Heisenberg model.
Phys. Rev. B 61 (2000) 14601-14606

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