title: Renormalization group in quantum mechanics at zero and finite temperature.
abstract: We apply the renormalization group formalism, to integrate quantum fluctuations of quantum mechanical systems at zero and finite temperature. At zero temperature a nonperturbative renormalization group equation allows to compute the ground state energy whereas at finite temperature a variational renormalization group equation is proposed to compute the free energy.
authors.affiliation: Université Grenoble I, Institut Fourier, UMR 5582 CNRS-UJF, UFR de Mathématiques, Boîte Postale 74, 38402 Saint Martin d'Hères Cedex, France.
authors.forename: P
authors.initials: P
authors.lastname: Gosselin
authors.forename: H
authors.initials: H
authors.lastname: Mohrbach
authors.forename: A
authors.initials: A
authors.lastname: Bérard