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Probing the Aoki phase with N_f=2 Wilson fermions at finite temperature

E. -M. Ilgenfritz·W. Kerler·M. Müller-Preussker·A. Sternbeck·H. Stüben
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Abstract

In this letter we report on a numerical investigation of the Aoki phase in the case of finite temperature which continues our former study at zero temperature. We have performed simulations with Wilson fermions at $β=4.6$ using lattices with temporal extension $N_τ=4$. In contrast to the zero temperature case, the existence of an Aoki phase can be confirmed for a small range in $κ$ at $β=4.6$, however, shifted slightly to lower $κ$. Despite fine-tuning $κ$ we could not separate the thermal transition line from the Aoki phase.

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E. -M. Ilgenfritz, W. Kerler, M. Müller-Preussker, A. Sternbeck, H. Stüben. 2005-11-28. Probing the Aoki phase with N_f=2 Wilson fermions at finite temperature. https://arxiv.org/abs/hep-lat/0511059

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