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arXiv 0712.0609hep-phhep-lat
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类QCD共形窗口的格点研究

Lattice Study of the Conformal Window in QCD-like Theories

Thomas Appelquist, George T. Fleming, Ethan T. Neil

摘要:

利用格点模拟,我们研究了$N_f$狄拉克费米子在基本表象下的$\text{SU}(3)$规范理论的共形窗口的范围。我们提出的证据表明,红外行为是共形的$12 \leq N_f \leq 16$,受红外固定点,而限制和手征对称性破缺是目前$N_f \leq 8$。

英文摘要:

Using lattice simulations, we study the extent of the conformal window for an $\text{SU}(3)$ gauge theory with $N_f$ Dirac fermions in the fundamental representation. We present evidence that the infrared behavior is conformal for $12 \leq N_f \leq 16$, governed by an infrared fixed point, while confinement and chiral symmetry breaking are present for $N_f \leq 8$.

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