Abstract
We calculate the contributions of electric and magnetic modes to some thermodynamic functions in SU(2)-gauge theory on the lattice 4×12 3. It is shown that the behaviour of the chromoelectric part of the energy E E can be interpreted within the Ising-type model in agreement with the universality hypothesis. At the same time the behaviour of the magnetic parts of the internal energy and pressure (i.e. E M and P M) differs drastically from that of E E and P M. The character of the temperature dependence of E M and P M exhibited here testifies to the presence of highly nonidentical properties of electric and magnetic excitation modes of chromoplasma and may shed light on the role of unstable modes in gauge theories.
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