Some Properties of Planar Galilean Conformal Algebras

Some Properties of Planar Galilean Conformal Algebras
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DOI:
10.1007/978-4-431-54270-4_21
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发表时间:
2013
期刊:
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通讯作者:
N. Aizawa
N. Aizawa
中科院分区:
其他
文献类型:
--
作者:
N. Aizawa

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研究了自旋为1的伽利略共形代数在平面上的无限维扩张。我们给出了余伴表示和所有可能的中心扩张的分类。此外,我们还研究了具有中心扩张的代数的表示。给出了最高权Verma模的Kac行列式,证明了Verma模对于不为零的最高权是不可约的。还给出了对应于单位中心电荷的玻色子实现。
An infinite dimensional extension of the spin 1 Galilean conformal algebra in the plane is investigated. We present the coadjoint representation and a classification of all possible central extensions. Furthermore, we study representations of the algebra with central extensions. Kac determinant for the highest weight Verma modules is given explicitly which shows that the Verma modules are irreducible for nonvanishing highest weights. A boson realization corresponding to unit central charge is also presented.