A general track reconstruction scheme and its application to the OPERA drift tubes

A general reconstruction and calibration procedure for tracking and wire position determination of the OPERA drift tubes is presented. The mathematics of the pattern recognition and the track fit are explained.Comment: 19 page

Quantum discord and quantum phase transition in spin chains

Quantum phase transitions of the transverse Ising and antiferromagnetic XXZ spin S=1/2 chains are studied using quantum discord. Quantum discord allows the measure of quantum correlations present in many-body quantum systems. It is shown that the amount of quantum correlations increases close to the critical points. The observations are in agreement with the information provided by the concurrence which measures the entanglement of the many-body system.Comment: 8 pages, 9 figure

Mind-Body Interpretation of Quantum Mechanics

The wave-particle duality is a mind-body one. In the real 3D-space there exists only the particle, the wave exists in its consciousness. If there are many particles, their distribution in accordance with the wave function represents a real wave in real space. Many worlds, Schroedinger cat, etc., exist only as mental constructions. The "waves of matter" are non-material. Feynman et al. taught quantum world "is like neither". Alas, they forgot living matter.Comment: 7 pages including 5 figures and 6 references. The shortened version of a report in IV Edition Workshop on Mysteries, Puzzles, and Paradoxes in Quantum Mechanics, 31.08.2001, Gargnano, Ital