Macroscopic Interferences of Neutrino Waves

Interference phenomena of neutrinos are studied. High energy neutrino in T2K near detector and low energy neutrino in KamLAND are possible experiments that could show macroscopic interferences of neutrino waves. In both experiments interference patterns may give new insights on the absolute value of the neutrino mass.Comment: 12 pages, 2 figure

Pressure, Resistance, and Current Activation of Anisotropic Compressible Hall States

Thermodynamic and electric properties of anisotropic compressible Hall states at higher Landau levels are studied using a mean field theory on the von Neumann lattice basis. It is shown that resistances agree with the recent experiments of anisotropic compressible states and the states have negative pressure. As implications, the collapse phenomena of the integer quantum Hall effect are discussed.Comment: 4 pages, 5 figures, to be published in Physica

Berry Curvature on the Fermi Surface: Anomalous Hall Effect as a Topological Fermi-Liquid Property

The intrinsic anomalous Hall effect in metallic ferromagnets is shown to be controlled by Berry phases accumulated by adiabatic motion of quasiparticles on the Fermi surface, and is purely a Fermi-liquid property, not a ``bulk'' Fermi sea property like Landau diamagnetism, as has been previously supposed. Berry phases are a new topological ingredient that must be added to Landau Fermi-liquid theory in the presence of broken inversion or time-reversal symmetry.Comment: 4 pages, 0 figures; to appear in Physical Review Letters; cleaner form of main formula+note added confirming continued validity of result in interacting Fermi liquids: + improved summary paragraph stating result; final published version (minor changes