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8 papers · 1 filter
Search for solar axions in XMASS, a large liquid-xenon detector
K. Abe, K. Hieda, K. Hiraide +43
XMASS, a low-background, large liquid-xenon detector, was used to search for solar axions that would be produced by bremsstrahlung and Compton effects in the Sun. With an exposure…
Quantum graph walks I: mapping to quantum walks
Yusuke Higuchi, Norio Konno, Iwao Sato +1
We clarify that coined quantum walk is determined by only the choice of local quantum coins. To do so, we characterize coined quantum walks on graph by disjoint Euler circles with…
Light WIMP search in XMASS
K. Abe, K. Hieda, K. Hiraide +43
A search for light dark matter using low-threshold data from the single phase liquid xenon scintillation detector XMASS, has been conducted. Using the entire 835 kg inner volume as…
Limit theorems for open quantum random walks
Norio Konno, Hyun Jae Yoo
We consider the limit distributions of open quantum random walks on one-dimensional lattice space. We introduce a dual process to the original quantum walk process, which is quite…
Current-induced cooling phenomenon in a two-dimensional electron gas under a magnetic field
Naomi Hirayama, Akira Endo, Kazuhiro Fujita +5
We investigate the spatial distribution of temperature induced by a dc current in a two-dimensional electron gas (2DEG) subjected to a perpendicular magnetic field. We numerically…
Localization of the Grover walks on spidernets and free Meixner laws
Norio Konno, Nobuaki Obata, Etsuo Segawa
A spidernet is a graph obtained by adding large cycles to an almost regular tree and considered as an example having intermediate properties of lattices and trees in the study of d…