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New nonperturbative approach to the Debye mass in hot QCD

N. O. Agasian·Yu. A. Simonov
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Abstract

The Debye mass m_D is computed nonperturbatively in the deconfined phase of QCD, where chromomagnetic confinement is known to be present. The latter defines m_D to be m_D=c_D\sqrt{σ_s}, where c_D \cong 2.06 and σ_s=σ_s(T) is the spatial string tension. The resulting magnitude of m_D(T) and temperature dependence are in good agreement with lattice calculations. Background perturbation theory expansion for m_D(T) is discussed in comparison to standard perturbative results and recent gauge-invariant definitions.

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N. O. Agasian, Yu. A. Simonov. 2006-06-13. New nonperturbative approach to the Debye mass in hot QCD. https://doi.org/10.1016/j.physletb.2006.06.019

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