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Monday, January 24, 2011
1:00 PM - 2:30 PM
CNLS Conference Room (TA-3, Bldg 1690)

Seminar

Effective field theory: from pions to gravitons

John F. Donoghue
UMass, Amherst

Effective field theory has become a very useful technique. It entails some ideas – such a renormalizing a non-renormalizable theory – that rarely make it into the classic texts, but yet are pretty intuitive. I will review the basic ideas, and illustrate them using the effective theory of pions in QCD. Given this development, it will be easy to see that general relativity fits the paradigm of an effective field theory. I will then give an example of a reliable calculation of quantum gravity – the quantum correction to the Newtonian potential.

Host: T-2, Vincenzo Cirigliano, 5-2829