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11 papers · 1 filter
ASCA Observations of GRO J1744-28
M. Nishiuchi, K. Koyama, Y. Maeda +7
We report the ASCA results of the bursting X-ray pulsar \gro, which was observed in February 1996 and March 1997. The source flux in the 2--10 keV band was erg/s…
An Oscillator Neural Network Retrieving Sparsely Coded Phase Patterns
Toshio Aoyagi, Masaki Nomura
Little is known theoretically about the associative memory capabilities of neural networks in which information is encoded not only in the mean firing rate but also in the timing o…
Time evolution of condensed state of interacting bosons with reduced number fluctuation in a leaky box
Akira Shimizu, Jun-ichi Inoue
We study the time evolution of the Bose-Einstein condensate of interacting bosons confined in a leaky box, when its number fluctuation is initially (t=0) suppressed. We take accoun…
Effective Hamiltonian for Excitons with Spin Degrees of Freedom
Jun-ichi Inoue, Tobias Brandes, Akira Shimizu
Starting from the conventional electron-hole Hamiltonian , we derive an effective Hamiltonian for excitons with spin degrees of freedom. T…
Number-phase-squeezed few-photon state generated from squeezed atoms
Hiroki Saito, Masahito Ueda
This paper develops a method of manipulating the squeezed atom state to generate a few-photon state whose phase or photon-number fluctuations are prescribed at our disposal. The sq…
Scaling relations in charge and spin excitations for (La,Sr)MnO3
Nobuo Furukawa, Yutaka Moritomo, K. Hirota +1
Scaling relations in the charge and spin excitations of (La,Sr)MnO3 are studied from both theoretical and experimental points of view. In the ferromagnetic metal phase, we investig…