I.F.T.
Almuerzo-Seminario
(Lunch seminar)
May 26th, 1:00 p.m.
A Proof of the Irreversibility of Renormalization
Group Flows in Four Dimensions
José Ignacio Latorre
Universidad de Barcelona
We prove the irreversibility of renormalization group
flows for unitary, renormalizable theories in four dimensions, i.e.,
the four dimensional version of the c-theorem. Using Ward identities
for scale transformations and spectral representation arguments, we
show that the c-function based on the trace of the energy-momentum
tensor (originally suggested by Cardy) decreases monotonically along
renormalization group trajectories. At fixed points this c-function
is stationary and coincides with the coefficient of the Euler density
in the trace anomaly.
The almuerzo-seminario is
intended to be an informal seminar and an open forum for discussion.
You are wellcome to bring your own
bocata (sandwich), or coffee or tea.
Where: Modulo C-XVI, 3rd floor,
Facultad de Ciencias U.A.M., C.U. Cantoblanco, 28049-Madrid
To get more information about this seminar e-mail
Tomás Ortín
or phone +34-1-397-8546
Last modified: Wed Apr 22 10:39:11 WET DST 1998