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<p><font face="arial,helvetica,sans-serif">Speaker:</font></p><p class="title"><font face="arial,helvetica,sans-serif">Alex Kovner</font></p><p class="caption"><font face="arial,helvetica,sans-serif">University Of Connecticut, USA</font></p><p><font face="arial,helvetica,sans-serif"><br />Abstract:</font></p><p>We show that instantons. although usually considered irreevant at high temperature, give the leading contribution to the splitting between the scalar and pseudoscalar correlation lengths. We calculate the splitting due to instanton-antiinstanton chains and show that it vanishes at asymptotically high teperatures as a power of the emperature. </p><br /><p><font face="arial,helvetica,sans-serif">Place and time:</font></p><p><font face="arial,helvetica,sans-serif">Physics Department meeting room, 2nd floor</font></p><p><font face="arial,helvetica,sans-serif">21 July 2010, 14:30 </font></p>