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Quantum Quivers and Hall/Hole Halos
(Institute of Physics, 2002)
Two pictures of BPS bound states in Calabi-Yau compactifications of type II string theory exist, one as a set of particles at equilibrium separations from each other, the other as a fusion of D-branes at a single point of ...
Magnetic Field Tuning of Charge and Spin Order in the Cuprate Superconductors
(World Scientific Pub Co Pte Lt, 2002)
Recent neutron scattering, nuclear magnetic resonance, and scanning tunneling microscopy experiments have yielded valuable new information on the interplay between charge and spin density wave order and superconductivity ...
How to beat the Rayleigh resolution limit: A lecture demonstration
(American Association of Physics Teachers (AAPT), 2002)
An experiment is described in which the effect of instrument aperture size on resolution is easily demonstrated. Using diffraction as a tool rather than a limit to resolution, one can further demonstrate the possibility ...
Josephson effects between multigap and single-gap superconductors
(American Physical Society (APS), 2002)
Multigap superconductors can exhibit qualitatively different phenomena due to the existence of multiple order parameters. Repulsive electronic interactions may give rise to a phase difference of between the phases of the ...
Competing orders in a magnetic field: Spin and charge order in the cuprate superconductors
(American Physical Society (APS), 2002)
We describe two-dimensional quantum spin fluctuations in a superconducting Abrikosov flux lattice induced by a magnetic field applied to a doped Mott insulator. Complete numerical solutions of a self-consistent large- N ...
Spinor Bosonic Atoms in Optical Lattices: Symmetry Breaking and Fractionalization
(American Physical Society (APS), 2002)
We study superfluid and Mott insulator phases of cold spin-1 Bose atoms with antiferromagnetic in- teractions in an optical lattice, including a usual polar condensate phase, a condensate of singlet pairs, a crystal spin ...
Quantum phase transitions in the Bose-Fermi Kondo model
(American Physical Society (APS), 2002)
We study quantum phase transitions in the Bose-Fermi Kondo problem, where a local spin is coupled to independent bosonic and fermionic degrees of freedom. Applying a second-order expansion in the anomalous dimension of the ...
A Search for H 2 O Maser Emission in Southern Active Galactic Nuclei and Star‐forming Galaxies: Discovery of a Maser in the Edge‐on Galaxy IRAS F01063?8034
(IOP Publishing, 2002)
We report the cumulative results of five surveys for H2O maser emission at 1.35 cm wavelength in 131 active galactic nuclei (AGNs) and star-forming galaxies, conducted at the Parkes Observatory between 1993 and 1998. We ...
The Discovery of H2O Maser Emission in Seven AGN and at High Velocities in the Circinus Galaxy
(IOP Publishing, 2002)
We report the discovery of H2O maser emission at 1.35 cm wavelength in seven active galactic nuclei (at distances up to < 80 Mpc) during a survey conducted at the 70-m diameter antenna of the NASA Deep Space Network near ...
Rotational and Vibrational Excitation of CO Molecules by Collisions with 4 He Atoms
(IOP Publishing, 2002)
Full close-coupled calculations are carried out of the cross sections for energy transfer between rotational levels of carbon monoxide in collision with 4He atoms with energies between 5 and 600 cm-1. At low energies, the ...