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arXiv 1005.0576hep-lathep-th
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三维YM中的二维费米子

Two dimensional fermions in three dimensional YM

R. Narayanan, H. Neuberger

摘要:

SU(N)基本表象中的狄拉克费米子存在于嵌入$R^3$中的圆柱表面上,并与三维SU(N)杨米尔斯矢量势相互作用,在有限的$N$上保持整体手征对称性。当圆柱体的周长从小到大变化时,手征对称性在典型的体积尺度下在无限$N$极限下自发地被破坏。用四维YM取代三维YM会引入非平凡的重整化效应。

英文摘要:

Dirac fermions in the fundamental representation of SU(N) live on the surface of a cylinder embedded in $R^3$ and interact with a three dimensional SU(N) Yang Mills vector potential preserving a global chiral symmetry at finite $N$. As the circumference of the cylinder is varied from small to large, the chiral symmetry gets spontaneously broken in the infinite $N$ limit at a typical bulk scale. Replacing three dimensional YM by four dimensional YM introduces non-trivial renormalization effects.

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