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Logarithmic potential beta-ensembles and Feynman graphs
Logarithmic potential beta-ensembles Feynman graphs
2010/12/14
We present the diagrammatic technique for calculating the free energy of the matrix eigenvalue
model (the model with arbitrary power β by the Vandermonde) to all orders of 1/N expansion in
the case ...
Thermal Operator Representation of Feynman Graphs
Quantum field theory Finite temperature and thermal operator
2010/9/29
In this talk I describe an interesting relation between Feynman graphs at finite temperature and chemical potential and the corresponding ones at zero temperature. The operator relating the two which ...