%AMallik, S [Saha Institute of Nuclear Physics, Calcutta (India)]
%D1998
%I;
%JIndian Journal of Physics, Part B
%K66 PHYSICS, CORRELATION FUNCTIONS, DIRAC OPERATORS, LAGRANGIAN FUNCTION, MATRIX ELEMENTS, OPERATOR PRODUCT EXPANSION, PAULI SPIN OPERATORS, QUANTUM CHROMODYNAMICS, SUM RULES, VECTOR CURRENTS, WICK THEOREM, WILSON LOOP
%PMedium: X; Size: pp. 407-426
%TStudy of QCD medium by sum rules
%XThough it has no analogue in condensed matter physics, the thermal QCD sum rules can, nevertheless, answer questions of condensed matter type about the QCD medium. The ingredients needed to write such sum rules, viz. the operator product expansion and the spectral representation at finite temperature, are reviewed in detail. The sum rules are then actually written for the case of correlation function of two vector currents. Collecting information on the thermal average of the higher dimension operators from other sources, we evaluate these sum rules for the temperature dependent {rho}-meson parameters. Possibility of extracting more information from the combined set of all sum rules from different correlation functions is also discussed. (author) 30 refs., 2 figs.
%0Journal Article
India Journal ID: IJPBDU; ISSN 0252-9254; TRN: IN9900019000070 INIS English