Catherine Pépin - IPhT

Séminaire de physique statistique
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Lundi 30 janvier 14h00
Orme des Merisiers Salle Claude Itzykson, Bât. 774
The Fermi liquid re-visited
Catherine Pépin
IPhT, CEA Saclay
We introduce a new bosonization technique devised to work in any dimension
of space, which makes extensive use of the BRST symmetry. We apply it (successfully) to the problem of re-summing all the non analytic contributions to the
thermodynamics of the Landau Fermi liquid theory of metals. This problem, dating from the seminal work of Landau, had been addressed so far only through
perturbative expansion in the interactions. We give here its first controlled evaluation through one loop RG.