Browsing by Author Yamamura, Masatoshi

Results 1 to 13 of 13
Issue DateTitleAuthor(s)TypeAccess
12-Sep-2014Beyond 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 applicationTsue, Yasuhiko ; Providência, Constança ; Providência, João da ; Yamamura, Masatoshi articleopenAccess
1989Equation of collective submanifold with mixed statesYamamura, Masatoshi ; Providência, João da ; Kuriyama, Atsushi ; Fiolhais, Carlos articleopenAccess
6-Jan-2015New boson realization of the Lipkin model obeying the su(2)-algebraTsue, Yasuhiko ; Providência, Constança ; Providencia, João da ; Yamamura, Masatoshi articleopenAccess
2017A note on the Lipkin model in arbitrary fermion numberTsue, Yasuhiko ; Providência, Constança ; Providência, João da ; Yamamura, Masatoshi articleopenAccess
1990On the random phase approximation based on the thermo field dynamics formalismYamamura, Masatoshi ; Providência, João da ; Kuriyama, Atsushi ; Fiolhais, Carlos articleopenAccess
2016A possible framework of the Lipkin model obeying the SU(n) algebra in arbitrary fermion number. I: The SU(2) algebras extended from the conventional fermion pair and determination of the minimum weight statesTsue, Yasuhiko ; Providência, Constança ; Providência, João da ; Yamamura, Masatoshi articleopenAccess
2016A possible framework of the Lipkin model obeying the SU(n) algebra in arbitrary fermion number. II: Two subalgebras in the SU(n) Lipkin model and an approach to the construction of a linearly independent basisTsue, Yasuhiko ; Providência, Constança ; Providência, João da ; Yamamura, Masatoshi articleopenAccess
2017A practical scheme for constructing the minimum-weight states of the su(n)-Lipkin model in arbitrary fermion numberTsue, Yasuhiko ; Providência, Constança ; Providência, João da ; Yamamura, Masatoshi articleopenAccess
14-Jun-2013A Pseudo su(1,1)-Algebraic Deformation of the Cooper-Pair in the su(2)-Algebraic Many-Fermion ModelTsue, Yasuhiko ; Providência, Constança ; Providencia, João da ; Yamamura, Masatoshi articleopenAccess
2014Quark spin polarization in high density quark matterTsue, Yasuhiko ; Providência, João da ; Providência, Constança ; Yamamura, Masatoshi articleopenAccess
6-Jul-2012Quark-Hadron Phase-Transition in an Extended NJL Model with Scalar-Vector InteractionLee, Tong-Gyu; Tsue, Yasuhiko ; Providencia, João da ; Providência, Constança ; Yamamura, Masatoshi articleopenAccess
3-Jul-2015Spontaneous magnetization in high-density quark matterTsue, Yasuhiko ; Providencia, João da ; Providência, Constança ; Yamamura, Masatoshi ; Bohr, HenrikarticleopenAccess
27-Mar-2018Spontaneous magnetization under a pseudovector interaction between quarks in high density quark matterMorimoto, Masatoshi ; Tsue, Yasuhiko ; Providência, João ; Providência, Constança ; Yamamura, Masatoshi articleopenAccess