Topological term, QCD anomaly, and the η′ chiral soliton lattice in rotating baryonic matter
Topological term, QCD anomaly, and the η′ chiral soliton lattice in rotating baryonic matter
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DOI：
10.1007/jhep07(2020)196
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发表时间：
2020-03
影响因子：
5.4
通讯作者：
K. Nishimura;N. Yamamoto
中科院分区：
文献类型：
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作者：
K. Nishimura;N. Yamamoto
在有限重子转动化学势下，研究了三味QCD中低密度强子物质和高密度色味锁定色超导相的基态。我们发现，在这两种情况下，在足够快的旋转下，η′介子的旋转诱导拓扑项和QCD反常的结合导致了η′介子的非均匀凝聚，称为手征孤子晶格（CSL）.我们发现，当重子化学势远大于同位旋化学势时，实现η′ CSL的临界角速度远小于π 0 CSL的临界角速度.我们还论证了在低密度和高密度下味对称QCD中的η′ CSL态应该是连续连接的，从而推广了在转动存在下夸克-强子连续性猜想.
We study the ground states of low-density hadronic matter and high-density color-flavor locked color superconducting phase in three-flavor QCD at finite baryon chemical potential under rotation. We find that, in both cases under sufficiently fast rotation, the combination of the rotation-induced topological term for the η′ meson and the QCD anomaly leads to an inhomogeneous condensate of the η′ meson, known as the chiral soliton lattice (CSL). We find that, when baryon chemical potential is much larger than isospin chemical potential, the critical angular velocity for the realization of the η′ CSL is much smaller than that for the π 0 CSL found previously. We also argue that the η′ CSL states in flavor-symmetric QCD at low density and high density should be continuously connected, extending the quark-hadron continuity conjecture in the presence of the rotation.