indico  First event Previous event KTH/Nordita/SU seminar in Theoretical Physics [before December 2013] Next event Last event   | view:  |  manage export to personal scheduler  | 
user login 

 

Ensemble of dyons
  KTH/Nordita/SU seminar in Theoretical Physics [before December 2013]

Wednesday 16 May 2007
from 11:00 to 12:00
at FA31
Speaker : Dmitri Diakonov (St Petersburg)
Abstract : We construct the integration measure over the moduli space of an arbitrary number of N kinds of dyons of the pure SU(N) gauge theory at finite temperatures. The ensemble of dyons governed by the measure is mathematically described by a 3-dimensional quantum field theory that is exactly solvable and is remarkable for a number of striking features:

1) The free energy has the minimum corresponding to the zero average Polyakov line, as expected in the confining phase;

2) The correlation function of two Polyakov lines exhibits a linear potential between static quarks in any N-ality non-zero representation, with a calculable string tension roughly independent of temperature;

3) The average spatial Wilson loop falls off exponentially with its area and the same string tension;

4) At a critical temperature the ensemble of dyons rearranges and de-confines.

5) The calculated ratio of the critical temperature to the square root of the string tension is in excellent agreement with the lattice data for any N.

Nordita  | Last modified 07 March 2015 09:14  |  HELP