Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.
DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.
The correlators of currents {Mathematical expression}Q, γvγ5Q, q and Q being correspondingly light and heavy quark fields, in hot hadronic matter are investigated by means of finite temperature QCD sum rules. At T≳ 100 MeV the modification of the effective spectrum parameters takes place, similar to that found earlier in the correlators of light quark currents. At T≳150 MeV the form of the spectrum is obtained, which indicates an appearance in hadronic matter of quasifree quarks with nonzero mass being fixed by the value of the quark condensate 〈 {Mathematical expression}q〉 (T). © 1987 Springer-Verlag.