Beyond Miransky Scaling

Details Beyond Miransky Scaling Beyond Miransky Scaling

2010-12-20

arxiv.org/abs/1012.4279v1

Phys.Rev.D84:034045,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, 8 figures

Scientific paper

10.1103/PhysRevD.84.034045

We study the scaling behavior of physical observables in strongly-flavored asymptotically free gauge theories, such as many-flavor QCD. Such theories approach a quantum critical point when the number of fermion flavors is increased. It is well-known that physical observables at this quantum critical point exhibit an exponential scaling behavior (Miransky scaling), provided the gauge coupling is considered as a constant external parameter. This scaling behavior is modified when the scale dependence of the gauge coupling is taken into account. Provided that the gauge coupling approaches an IR fixed point, we derive the resulting universal power-law corrections to the exponential scaling behavior and show that they are uniquely determined by the IR critical exponent of the gauge coupling. To illustrate our findings, we compute the universal corrections in many-flavor QCD with the aid of nonperturbative functional renormalization group methods. In this case, we expect the power-law scaling to be quantitatively more relevant if the theories are probed, for instance, at integer Nf as done in lattice simulations.

Affiliated with

Also associated with

No associations

Rating

Beyond Miransky Scaling does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Beyond Miransky Scaling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Beyond Miransky Scaling will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-453103