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

Please always quote using this URN: urn:nbn:de:0297-zib-8812

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 $\beta=4.6$ using lattices with temporal extension $N_{\tau}=4$. In contrast to the zero temperature case, the existence of an Aoki phase can be confirmed for a small range in $\kappa$ at $\beta=4.6$, however, shifted slightly to lower $\kappa$. Despite fine-tuning $\kappa$ we could not separate the thermal transition line from the Aoki phase.

Metadaten
Author:	Ernst-Michael Ilgenfritz, Werner Kerler, Michael Müller-Preussker, Andre Sternbeck, Hinnerk Stüben
Document Type:	ZIB-Report
Tag:	Aoki phase; Wilson fermions; finite temperature; parity-flavor symmetry; phase diagram
PACS-Classification:	10.00.00 THE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS (for experimental methods and instrumentation for elementary-particle physics, see section 29) / 11.00.00 General theory of fields and particles (see also 03.65.-w Quantum mechanics and 03.70.+k Theory of quantized fields) / 11.15.-q Gauge field theories / 11.15.Ha Lattice gauge theory (see also 12.38.Gc Lattice QCD calculations)
	10.00.00 THE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS (for experimental methods and instrumentation for elementary-particle physics, see section 29) / 12.00.00 Specific theories and interaction models; particle systematics / 12.38.-t Quantum chromodynamics; Quarks, gluons, and QCD in nuclear reactions, see 24.85.+p / 12.38.Gc Lattice QCD calculations (see also 11.15.Ha Lattice gauge theory)
Date of first Publication:	2005/11/24
Series (Serial Number):	ZIB-Report (05-48)
ZIB-Reportnumber:	05-48

Open Access