MEM study of true flattening of free energy and the $θ$ term

Details MEM study of true flattening of free energy and the $θ$ term MEM study of true flattening of free energy and the $θ$ term

2004-09-25

arxiv.org/abs/hep-lat/0409146v2

Physics

High Energy Physics

High Energy Physics - Lattice

Poster presented at Lattice2004(topology), Fermilab, June 21-26, 2004; 3 pages, 3 figures

Scientific paper

10.1016/j.nuclphysbps.2004.11.25

We study the sign problem in lattice field theory with a $\theta$ term, which reveals as flattening phenomenon of the free energy density $f(\theta)$. We report the result of the MEM analysis, where such mock data are used that `true' flattening of $f(\theta)$ occurs. This is regarded as a simple model for studying whether the MEM could correctly detect non trivial phase structure in $\theta$ space. We discuss how the MEM distinguishes fictitious and true flattening.

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