The T-dependence of the quark-condensate was taken from LQCD [62, 63].
Further support for this relation is provided by LQCD results [91, 92].
The results for bottonium were in qualitative agreement with LQCD simulations [8, 9].
The thermal behaviour of the gluon condensate, needed as an input, was obtained from LQCD results available at the time [97, 98].
In the limit [[mu].sub.B] = 0, the result for the quark- condensate using (81) is shown in Figure 23, together with LQCD data [62, 63].
In addition, being restricted to very low temperatures, it provides no useful thermal information on, for example, QCD condensates, which is currently provided by LQCD. Alternatively, another complete set is the quark-gluon of QCD, as first advocated in .This choice allows for a smooth extension of the QCDSR method to finite T.
It also differs from that used by LQCD, that is, the so-called Polyakov-loop.
Instead, for the heavy-heavy-quark systems, the coupling actually increases, and the width while initially growing reverses behaviour decreasing close to [T.sub.c], indicating the survival of these hadrons at and above [T.sub.c].This prediction was later confirmed for bottonium by LQCD [8, 9].
Caption: Figure 4: The normalized thermal behaviour of the gluon condensate (solid curve), together with LQCD results (dots)  for [T.sub.c] = 197 MeV.