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6 papers · 1 filter
Relation between - hybridization and magnetic ordering in CeRuAl: An optical conductivity study of Ce(RuRh)Al ()
Shin-ichi Kimura, Hiroshi Tanida, Masafumi Sera +5
A Kondo semiconductor CeRuAl with an orthorhombic crystal structure shows an unusual antiferromagnetic ordering at rather high temperature of 27.3 K, which is lowe…
Sullivan minimal models of classifying spaces for non-formal spaces of small rank
Hirokazu Nishinobu, Toshihiro Yamaguchi
We consider certain rational homotopical conditions of simly connected CW complex such that the rational cohomology of the classifying space for fibrations with two-s…
A possibility of quark spin polarized phase in high density quark matter
Y. Tsue, J. da Providencia, C. Providencia +2
It is shown that the quark spin polarization may occur for each quark flavor by the use of the Nambu-Jona-Lasinio model with a tensor-type four-point interaction between quarks, wh…
Pressure-Induced Valence Crossover and Novel Metamagnetic Behavior near the Antiferromagnetic Quantum Phase Transition of YbNiGa
K. Matsubayashi, T. Hirayama, T. Yamashita +7
We report electrical resistivity, ac magnetic susceptibility and X-ray absorption spectroscopy measurements of intermediate valence YbNiGa under pressure and magnetic f…
Constraining the density dependence of the nuclear symmetry energy from an X-ray bursting neutron star
Hajime Sotani, Kei Iida, Kazuhiro Oyamatsu
Neutrons stars lighter than the Sun are basically composed of nuclear matter of density up to around twice normal nuclear density. In our recent analyses, we showed that possible s…
New boson realization of the Lipkin model obeying the su(2)-algebra
Y. Tsue, C. Providencia, J. da Providencia +1
New boson representation of the su(2)-algebra proposed by the present authors for describing the damped and amplified oscillator is examined in the Lipkin model as one of simple ma…