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16 papers · 1 filter
Dynamics of a string coupled to gravitational waves II - Perturbations propagate along an infinite Nambu-Goto string
Kouji Nakamura, Hideki Ishihara
The perturbative modes propagating along an infinite string are investigated within the framework of the gauge invariant perturbation formalism on a spacetime containing a self-gra…
Observation of the antiferroquadrupolar order in DyB2C2 by resonant x-ray scattering
T. Matsumura, N. Oumi, K. Hirota +6
We have investigated the antiferroquadrupolar(AFQ) order in DyBC by resonant x-ray scattering. X-rays with energies near the absorption edge of Dy were employed. Supe…
Thurston's Geometrization Conjecture and cosmological models
Katsuhito Yasuno, Tatsuhiko Koike, Masaru Siino
We investigate a class of spatially compact inhomogeneous spacetimes. Motivated by Thurston's Geometrization Conjecture, we give a formulation for constructing spatially compact co…
Short-range polaron correlations in the ferromagnetic La(1-x)Ca(x)MnO(3)
Pengcheng Dai, J. A. Fernandez-Baca, N. Wakabayashi +3
We use neutron scattering to demonstrate the presence of lattice polarons and their short-range correlations for several samples of LaCaMnO in the Ca doping range $…
Metal-Insulator Transition in Homogeneously Doped Germanium
Michio Watanabe
We have measured the electrical conductivity of Ge:Ga samples prepared by neutron-transmutation doping of isotopically enriched 70Ge single crystals in order to study the metal-ins…
Magetoresistance of RuO_2-based resistance thermometers below 0.3 K
Michio Watanabe, Masashi Morishita, Youiti Ootuka
We have determined the magnetoresistance of RuO_2-based resistors (Scientific Instruments RO-600) between 0.05 K and 0.3 K in magnetic fields up to 8 T. The magnetoresistance is ne…