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2+1 Flavor QCD simulated in the epsilon-regime in different topological sectors
- Publication Year :
- 2007
- Publisher :
- arXiv, 2007.
-
Abstract
- We generated configurations with the parametrized fixed-point Dirac operator D_{FP} on a (1.6 fm)^4 box at a lattice spacing a=0.13 fm. We compare the distributions of the three lowest k=1,2,3 eigenvalues in the nu= 0,1,2 topological sectors with that of the Random Matrix Theory predictions. The ratios of expectation values of the lowest eigenvalues and the cumulative eigenvalue distributions are studied for all combinations of k and nu. After including the finite size correction from one-loop chiral perturbation theory we obtained for the chiral condensate in the MSbar scheme Sigma(2GeV)^{1/3}=0.239(11) GeV, where the error is statistical only.<br />Comment: 19 pages, 13 figures, added Sigma in MSbar
- Subjects :
- Quantum chromodynamics
Physics
Nuclear and High Energy Physics
Chiral perturbation theory
High Energy Physics - Lattice (hep-lat)
FOS: Physical sciences
Lattice QCD
Dirac operator
Topology
symbols.namesake
High Energy Physics - Lattice
Lattice constant
symbols
Order (group theory)
Random matrix
Eigenvalues and eigenvectors
Subjects
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....d2dd517c44a9babbe56f95db717579e9
- Full Text :
- https://doi.org/10.48550/arxiv.0707.0071