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29 papers · 1 filter
Trigonometric Degeneration and Orbifold Wess-Zumino-Witten Model. II
Takashi Takebe
The sheaves of conformal blocks and conformal coinvariants of the twisted WZW model have a factorisation property and are locally free even at the boundary of the moduli space, whe…
Supersymmetry, homology with twisted coefficients and n-dimensional knots
Eiji Ogasa
Let be any natural number. Let be any -dimensional knot in . We define a supersymmetric quantum system for with the following properties. We firstly constru…
Simple description of neutrinos in SU(5)
Noriyuki Oshimo
We show that experimental results for the masses and mixing of the neutrinos can be understood naturally by a simple grand unification model of SU(5) coupled to N=1 supergravity. N…
D-braneworld cosmology II: Higher order corrections
Tomoko Uesugi, Tetsuya Shiromizu, Takashi Torii +1
We investigate braneworld cosmology based on the D-brane initiated in our previous paper. The brane is described by a Born-Infeld action and the gauge field is contained. The highe…
Impossibility of distant indirect measurement of the quantum Zeno effect
M. Hotta, M. Morikawa
We critically study the possibility of quantum Zeno effect for indirect measurements. If the detector is prepared to detect the emitted signal from the core system, and the detecto…
Level statistics of XXZ spin chains with a random magnetic field
Kazue Kudo, Tetsuo Deguchi
The level-spacing distribution of a spin 1/2 XXZ chain is numerically studied under random magnetic field. We show explicitly how the level statistics depends on the lattice size L…