Universality From Very General Nonperturbative Flow Equations in QCD
arXiv:hep-th/0611323 · doi:10.1016/j.physletb.2006.12.057
Abstract
In the context of very general exact renormalization groups, it will be shown that, given a vertex expansion of the Wilsonian effective action, remarkable progress can be made without making any approximations. Working in QCD we will derive, in a manifestly gauge invariant way, an exact diagrammatic expression for the expectation value of an arbitrary gauge invariant operator, in which many of the non-universal details of the setup do not explicitly appear. This provides a new starting point for attacking nonperturbative problems.
4 pages, 1 figure
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- Manifestly diffeomorphism invariant classical Exact Renormalization Group
- Triviality from the Exact Renormalization Group
- Background independent exact renormalisation
- A Resummable beta-Function for Massless QED
- Conformal anomaly from gauge fields without gauge fixing
- An Extension of Pohlmeyer's Theorem
- Sensitivity of Nonrenormalizable Trajectories to the Bare Scale