Extracting $F_π$ from small lattices: unquenched results

Details Extracting $F_π$ from small lattices: unquenched results Extracting $F_π$ from small lattices: unquenched results

2006-02-27

arxiv.org/abs/hep-lat/0602030v1

Phys.Rev. D73 (2006) 074023

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 5 figures

Scientific paper

10.1103/PhysRevD.73.074023

We calculate the response of the microscopic Dirac spectrum to an imaginary isospin chemical potential for QCD with two dynamical flavors in the chiral limit. This extends our previous calculation from the quenched to the unquenched theory. The resulting spectral correlation function in the $\epsilon$-regime provides here, too, a new and efficient way to measure $F_\pi$ on the lattice. We test the method in a hybrid Monte Carlo simulation of the theory with two staggered quarks.

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