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arXiv 2005.02069hep-thmath-phmath.MP
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不含和含WZ项的主手征模型:对称性和Poisson-Lie T-对偶

Principal Chiral Model without and with WZ term: Symmetries and Poisson-Lie T-Duality

Francesco Bascone, Franco Pezzella

摘要:

从余切空间$T^*SU(2) \simeq SU(2) \ltimes \mathbb{R}^3$的非阿贝尔变形所产生的等价哈密顿描述的单参数族出发,研究了$SU(2)$主手征模型的对偶性质.通过$O(3,3)$对偶变换得到相应的对偶模型,并将结果定义在群$SB(2,\mathbb{C})$上,该群是$SU(2)$在Drinfel'd对偶$SL(2,\mathbb{C})=SU(2) \bowtie SB(2,\mathbb{C})$的Iwasawa分解中的Poisson-Lie对偶,这些对偶模型提供了Poisson-Lie T-对偶的显式实现.然后在切空间$TSL(2,\mathbb{C})$上建立一个双重广义父动作。此外,概括的$SU(2)$ PCM与WZ项进行了简短的讨论。

英文摘要:

Duality properties of the $SU(2)$ Principal Chiral Model are investigated starting from a one-parameter family of its equivalent Hamiltonian descriptions generated by a non-Abelian deformation of the cotangent space $T^*SU(2) \simeq SU(2) \ltimes \mathbb{R}^3$. The corresponding dual models are obtained through $O(3,3)$ duality transformations and result to be defined on the group $SB(2,\mathbb{C})$, which is the Poisson-Lie dual of $SU(2)$ in the Iwasawa decomposition of the Drinfel'd double $SL(2,\mathbb{C})=SU(2) \bowtie SB(2,\mathbb{C})$.These dual models provide an explicit realization of Poisson-Lie T-duality. A doubled generalized parent action is then built on the tangent space $TSL(2,\mathbb{C})$. Furthermore, a generalization of the $SU(2)$ PCM with a WZ term is shortly discussed.

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