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Hamiltonian Renormalisation: Klein-Gordon Test

Jan 23
2:00 pm o'clock to 4:00 pm o'clock
SR 02.729

Elements of the Hamiltonian Renormalisation Scheme as introduced in the group seminar by Thorsten Lang two weeks ago are briefly reviewed. We then apply it to the Klein-Gordon
Field in any dimension on Minkowski space.
In this simple test theory it is possible to carry
out the renomalison programme explicitly and to compute the flow and its fixed points, and to analyse various of its aspects such as universality properties, perfectness of
lattice Laplacians and recovery of rotational