Index theorem in spontaneously symmetry-broken gauge theories on a fuzzy 2-sphere
Index theorem in spontaneously symmetry-broken gauge theories on a fuzzy 2-sphere
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模糊2-球面上自发对称破缺规范理论中的指数定理
DOI:
10.1103/physrevd.78.025028
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发表时间:
2008
影响因子:
5
通讯作者:
S. Iso
中科院分区:
文献类型:
--
作者:
H. Aoki;Y. Hirayama;S. Iso
We consider a gauge-Higgs system on a fuzzy 2-sphere and study the topological structure of gauge configurations, when the U(2) gauge symmetry is spontaneously broken to U(1)xU(1) by the vev of the Higgs field. The topology is classified by the index of the Dirac operator satisfying the Ginsparg-Wilson relation, which turns out to be a noncommutative analog of the topological charge introduced by 't Hooft. It can be rewritten as a form whose commutative limit becomes the winding number of the Higgs field. We also study conditions which assure the validity of the formulation, and give a generalization of the admissibility condition. Finally we explicitly calculate the topological charge of a one-parameter family of configurations.
DOI:
--
发表时间:
2006
期刊:
Journal of High Energy Physics 0611
影响因子:
--
作者:
G.Ishiki;S.Shimasaki;Y.Takayama;A.Tsuchiya
通讯作者:
A.Tsuchiya
DOI:
--
发表时间:
2006
期刊:
Journal of High Energy Physics 0605:061
影响因子:
--
作者:
Takehiro Azuma;Subrata Bal;Keiichi Nagao and Jun Nishimura
通讯作者:
Keiichi Nagao and Jun Nishimura
DOI:
--
发表时间:
2003
期刊:
Nucl.Phys B665
影响因子:
--
作者:
Takaaki Imai;Yoshihisa Kitazawa;Yastoshi Takayama;Dan Tomino
通讯作者:
Dan Tomino