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- University of CoimbraPT25 papers
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7 papers · 1 filter
On instability of global path properties of symmetric Dirichlet forms under Mosco-convergence
Kohei Suzuki, Toshihiro Uemura
We give sufficient conditions for Mosco convergences for the following three cases: symmetric locally uniformly elliptic diffusions, symmetric Lévy processes, and symmetric jump pr…
Whack-A-Mole Model: Towards unified description of biological effect caused by radiation-exposure
Yuichiro Manabe, Takahiro Wada, Yuichi Tsunoyama +3
We present a novel model to estimate biological effects caused by artificial radiation exposure, Whack-a-mole (WAM) model. It is important to take account of the recovery effects d…
Properties of Lyubeznik numbers under localization and polarization
Arindam Banerjee, Luis Núñez-Betancourt, Kohji Yanagawa
We exhibit a global bound for the Lyubeznik numbers of a ring of prime characteristic. In addition, we show that for a monomial ideal, the Lyubeznik numbers of the quotient rings o…
Beyond the Schwinger boson representation of the su(2)-algebra. II -- Some theoretical features of new boson representation and connections to the other boson representations
Yasuhiko Tsue, Constanca Providencia, Joao da Providencia +1
Concerning the new boson representation presented in Part I, it is proved that this representation obeys the su(2)-algebra in a certain subspace in the whole boson space constructe…
Beyond the Schwinger boson representation of the su(2)-algebra. I -- New boson representation based on the su(1,1)-algebra and its related problems with application
Yasuhiko Tsue, Constanca Providencia, Joao da Providencia +1
With the use of two kinds of boson operators, a new boson representation of the su(2)-algebra is proposed. The basic idea comes from the pseudo su(1,1)-algebra recently given by th…
Spin Polarization versus Color-Flavor-Locking in High Density Quark Matter
Y. Tsue, J. da Providencia, C. Providencia +2
It is shown that spin polarization with respect to each flavor in three-flavor quark matter occurs instead of the color-flavor locking at high baryon density by using the Nambu-Jon…