Domain Walls and Vortices in Chiral Symmetry Breaking
Domain Walls and Vortices in Chiral Symmetry Breaking
复制标题
手性对称破缺中的畴壁和涡旋
DOI：
10.1093/ptep/ptu013
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发表时间：
2014
影响因子：
3.5
通讯作者：
Yuji Hirono and Muneto Nitta
中科院分区：
文献类型：
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作者：
Minoru Eto;Yuji Hirono and Muneto Nitta
我们研究类量子色动力学 (QCD) 理论中手性对称性破缺的畴壁和涡旋，其风味处于手性极限。如果不存在轴向异常，则存在缠绕自发破缺对称性的稳定阿贝尔轴向涡旋和同时缠绕非阿贝尔手性对称性的非阿贝尔轴向涡旋。在存在轴向异常项的情况下，存在亚稳态畴壁，并且阿贝尔轴向涡流必须附着在畴壁上，形成畴壁连接。我们表明，磁畴壁结衰变成磁畴壁附着的非阿贝尔涡旋，这意味着它的亚稳定性。我们还表明，畴壁通过量子隧道衰减，产生一个由封闭的非阿贝尔涡旋包围的空穴。
We study domain walls and vortices in chiral symmetry breaking in a quantum chromodynamic (QCD)-like theory withflavors in the chiral limit. If the axial anomaly is absent, there exist stable Abelian axial vortices winding around the spontaneously brokensymmetry and non-Abelian axial vortices winding around both theand non-Abelianchiral symmetries. In the presence of the axial anomaly term, metastable domain walls are present and Abelian axial vortices must be attached bydomain walls, forming domain wall junctions. We show that a domain wall junction decays intonon-Abelian vortices attached by domain walls, implying its metastability. We also show that domain walls decay through quantum tunneling by creating a hole bounded by a closed non-Abelian vortex.