QCD phase transition in the early universe - Theory Center
QCD phase transition in the early universe - Theory Center
QCD phase transition in the early universe - Theory Center
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Overview – <strong>QCD</strong> – F<strong>in</strong>ite Temperature <strong>QCD</strong> – Unsettled Issues: Failure of perturbation <strong>the</strong>ory – Early Universe - Summary<br />
Non-trivial High-Temperature Phase<br />
● Perturbation <strong>the</strong>ory fails<br />
● Infrared divergences<br />
– Similar to <strong>the</strong> vacuum<br />
● Most problems for<br />
chromomagnetic sector<br />
● Also spatial str<strong>in</strong>g tension<br />
cannot be expla<strong>in</strong>ed by<br />
perturbation <strong>the</strong>ory<br />
● High temperature <strong>phase</strong> cannot be perturbative<br />
● Likely not even at <strong>in</strong>f<strong>in</strong>ite temperature<br />
<strong>QCD</strong> Phase Transition(s) & The Early Universe/Axel Maas<br />
[Figure from Rischke, Prog.Part.Nucl. 2004]
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