15 papers
Large N and the renormalization group
Marco D'Attanasio, Tim R. Morris
In the large N limit, we show that the Local Potential Approximation to the flow equation for the Legendre effective action, is in effect no longer an approximation, but exact - in…
Transversality of the Gluon Self-Energy at Finite Temperature in General Covariant Gauges
Marco D'Attanasio, Massimo Pietroni
The paper ``Transversality of the Gluon Self-Energy at Finite Temperature in General Covariant Gauges'' has been withdrawn.
Gauge-Invariant Renormalization Group at Finite Temperature
Marco D'Attanasio, Massimo Pietroni
We propose a gauge-invariant version of Wilson Renormalization Group for thermal field theories in real time. The application to the computation of the thermal masses of the gauge…
Gauge Invariance, the Quantum Action Principle, and the Renormalization Group
Marco D'Attanasio, Tim R. Morris
If the Wilsonian renormalization group (RG) is formulated with a cutoff that breaks gauge invariance, then gauge invariance may be recovered only once the cutoff is removed and onl…
Wilson Renormalization Group formulation of Real Time thermal field theories
Marco D'Attanasio, Massimo Pietroni
We apply Renormalization Group techniques to the Real Time formulation of thermal field theory. Due to the separation between the and the parts of the propagator in…
New Aspects of Reheating
D. Boyanovsky, M. D'attanasio, H. J. de Vega +2
The reheating stage in post-inflationary cosmologies is reanalyzed. New techniques from non-equilibrium quantum field theory allow a consistent derivation of the equation of motion…