Abelian chromomagnetic background field at finite temperature on the lattice

Details Abelian chromomagnetic background field at finite temperature on the lattice Abelian chromomagnetic background field at finite temperature on the lattice

2001-01-30

arxiv.org/abs/hep-lat/0101017v1

Physics

High Energy Physics

High Energy Physics - Lattice

19 pages, 8 figures

Scientific paper

The vacuum dynamics of SU(2) and SU(3) lattice gauge theories is studied by means of a gauge-invariant effective action defined using the lattice Schr\"odinger functional at finite temperature. In the case of the SU(3) gauge theory numerical simulations are performed both at zero and finite temperature. The vacuum is probed using an external constant Abelian chromomagnetic field. At zero temperature, in agreement with our previous studies for the SU(2) theory, the external field is totally screened in the continuum limit. At finite temperature numerical data suggest that confinement is restored by increasing the strength of the applied field.

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