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RESTORATION OF CHIRAL AND U(1)_(A) SYMMETRIES IN EXCITED HADRONS IN THE SEMICLASSICAL REGIME

机译:在半思法制度中恢复手性和U(1)_(a)对称的兴奋性的对称

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Restoration of chiral and U(1)_(A) symmetries in excited hadrons is reviewed.Implications of the OPE as well as of the semiclassical expansion for this phenomenon are discussed. A solvable model of the 't Hooft type in 3+1 dimensions is presented, which demonstrates a fast restoration of both chiral and U(1)_(A) symmetries at larger spins and radial excitations.
机译:讨论了兴奋强度中的手性和U(1)_(a)对称性的恢复。讨论了OPE的实现以及这种现象的半思法扩展。提出了“T Hooft型的可溶性模型,其中3 + 1尺寸”,这表明了在较大的旋转和径向激发下的手性和U(1)_(A)对称的快速恢复。

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