Dual quark condensate and dressed Polyakov loops
- Institut fuer Physik, FB Theoretische Physik, Universitaet Graz, A-8010 Graz (Austria)
- Institut fuer Theoretische Physik, Universitaet Regensburg, D-93040 Regensburg (Germany)
We construct a new order parameter for finite temperature QCD by considering the quark condensate for U(1)-valued temporal boundary conditions for the fermions. Fourier transformation with respect to the boundary condition defines the dual condensate. This quantity corresponds to an equivalence class of Polyakov loops, thereby being an order parameter for the center symmetry. We explore the duality relation between the quark condensate and these dressed Polyakov loops numerically, using quenched lattice QCD configurations below and above the QCD phase transition. It is demonstrated that the Dirac spectrum responds differently to changing the boundary condition, in a manner that reproduces the expected Polyakov loop pattern. We find the dressed Polyakov loops to be dominated by the lowest Dirac modes, in contrast to thin Polyakov loops investigated earlier.
- OSTI ID:
- 21250113
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 77, Issue 9; Other Information: DOI: 10.1103/PhysRevD.77.094007; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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