Abstract
The partition function ofd dimensional systems is estimated with the help of a variational Ansatz in terms of quasi-(d-1)-dimensional systems. The internal energy and the string tension derived in this framework agree reasonably with the Monte Carlo data.
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Patkós, A., Deák, F. Variational calculations in the gluon sector of the lattice QCD. Z. Phys. C - Particles and Fields 9, 359–364 (1981). https://doi.org/10.1007/BF01548773
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DOI: https://doi.org/10.1007/BF01548773