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SUMMARY:On cold and hot chiral symmetry breaking\n
DTSTART;VALUE=DATE-TIME:19990924T090000Z
DTEND;VALUE=DATE-TIME:19990924T091500Z
DTSTAMP;VALUE=DATE-TIME:20130522T070747Z
UID:indico-event-a032851@cern.ch
DESCRIPTION:This talk focuses on two aspects of chiral symmetry\, taken fr
 om both cold and hot chiral symmetry breaking. \n\n(a) At zero temperature
 \, we focus on the charged pion polarizability\, ap\, for which there is a
  large spread in both the theoretical and experimental values. We are able
  to give a unified and comparative approach for the various theoretical mo
 dels via the Das-Mathur-Okubo sum rule. From the experimental point of vie
 w\, more experiments are required for clarification.\n\n(b) For hot system
 s\, we present a non-equilibrium evolution equation for quarks and mesons 
 based on a chirally invariant LaGrange density. Several general features o
 f phase transitions\, such as critical scattering at the phase transition\
 , can be observed in quark-anti-quark cross sections. First toy simulation
 s of collisions are shown.\n\nhttp://indico.cern.ch/conferenceDisplay.py?c
 onfId=a032851
LOCATION:CERN
URL:http://indico.cern.ch/conferenceDisplay.py?confId=a032851
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