抄録
Abstract: We derive some exact results concerning the anomalous U(1)A symmetry in the chirally symmetric phase of QCD at high temperature. We discuss the importance of topology and finite-volume effects on the U(1)A symmetry violation characterized by the difference of chiral susceptibilities. In particular, we present a reliable method to measure the anomaly strength in lattice simulations with fixed topology. We also derive new spectral sum rules and a novel Banks-Casher-type relation. Through our spectral analysis we arrive at a simple alternative proof of the Aoki-Fukaya-Taniguchi “theorem” on the effective restoration of the U(1)A symmetry at high temperature.
本文言語 | English |
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論文番号 | 141 |
ページ(範囲) | 1-28 |
ページ数 | 28 |
ジャーナル | Journal of High Energy Physics |
巻 | 2016 |
号 | 1 |
DOI | |
出版ステータス | Published - 2016 1月 1 |
ASJC Scopus subject areas
- 核物理学および高エネルギー物理学