Callan-Symanzik equation

From Wikipedia, the free encyclopedia

In physics, the Callan-Symanzik equation is the renormalization relation that tells how the coupling constant changes with momentum in a quantum field theory.

It was discovered independently by Curtis Callan^[1] and Kurt Symanzik^[2] in 1970. Later it is used to understand asymptotic freedom.

It is a special case of a renormalization group equation.

[edit] Reference

1. ^ C. G. Callan, Phys. Rev. D 2, 1541 (1970)
2. ^ K. Symanzik, Commun. Math. Phys. 18, 227 (1970)

[edit] Literature

• Jean Zinn-Justin, Quantum Field Theory and Critical Phenomena , Oxford University Press 2003, ISBN 0198509235
• John Clements Collins, Renormalization, Cambridge University 1986, ISBN 0521311772

[edit] See also

• exact renormalization group equation
• beta-function