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- The University of TokyoJP226 papers
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16 papers · 1 filter
An explanatory model for food-web structure and evolution
A. G. Rossberg, H. Matsuda, T. Amemiya +1
Food webs are networks describing who is eating whom in an ecological community. By now it is clear that many aspects of food-web structure are reproducible across diverse habitats…
Magnetization Losses in Multifilament Coated Superconductors
G. A. Levin, P. N. Barnes, N. Amemiya +3
We report the results of a study of the magnetization losses in experimental multifilament, as well as control (uniform), coated superconductors exposed to time-varying magnetic fi…
Geographical threshold graphs with small-world and scale-free properties
Naoki Masuda, Hiroyoshi Miwa, Norio Konno
Many real networks are equipped with short diameters, high clustering, and power-law degree distributions. With preferential attachment and network growth, the model by Barabasi an…
Observation by an Air-Shower Array in Tibet of the Multi-TeV Cosmic-Ray Anisotropy due to Terrestrial Orbital Motion Around the Sun
M. Amenomori
We report on the solar diurnal variation of the galactic cosmic-ray intensity observed by the Tibet III air shower array during the period from 1999 to 2003. In the higher-energy e…
Limit Theorem for Continuous-Time Quantum Walk on the Line
Norio Konno
Concerning a discrete-time quantum walk X^{(d)}_t with a symmetric distribution on the line, whose evolution is described by the Hadamard transformation, it was proved by the autho…
Breakdown of an Electric-Field Driven System: a Mapping to a Quantum Walk
Takashi Oka, Norio Konno, Ryotaro Arita +1
Quantum transport properties of electron systems driven by strong electric fields are studied by mapping the Landau-Zener transition dynamics to a quantum walk on a semi-infinite o…