The Effective Potential in Non-Conformal Gauge Theories

Understand

By using the renormalization group (RG) equation it has proved possible to sum logarithmic corrections to quantities that arise due to quantum effects in field theories.

• In particular, the effective potential V in the Standard Model in the limit that there are no massive parameters in the classical action (the "conformal limit") has been subject to this analysis, as has the effective potential in a scalar theory with a quartic self coupling and in massless scalar electrodynamics.
• Having multiple coupling constants and/or mass parameters in the initial action complicates this analysis, as then several mass scales arise.
• We show how to address this problem by considering the effective potential in scalar electrodynamics when the scalar field has a tree level mass term.