99 citations · 214 across the 11 of their papers we have counts for
11 papers
The role of dissipation in biasing the vacuum selection in quantum field theory at finite temperature
F. Freire, N. D. Antunes, P. Salmi +1
We study the symmetry breaking pattern of an O(4) symmetric model of scalar fields, with both charged and neutral fields, interacting with a photon bath. Nagasawa and Brandenberger…
On the renormalisability of gauge invariant extensions of the squared gauge potential
Mboyo Esole, Filipe Freire
We show that gauge invariant extensions of the local functional $\cO = \frac12\int d^4x A^2$ have long range non localities which can only be ``renormalised'' with reference to a s…
The unphysical nature of the SL(2,R) symmetry and its associated condensates in Yang-Mills theories
Mboyo Esole, Filipe Freire
BRST cohomology methods are used to explain the origin of the SL(2,R) symmetry in Yang-Mills theories. Clear evidence is provided for the unphysical nature of this symmetry. This i…
SU(2) Abelian projected action for renormalisation group flows
Filipe Freire
The dual Meissner effect scenario of confinement is analysed using exact renormalisation group (ERG) equations. In particular, the low energy regime of SU(2) Yang-Mills is studied…
Abelian projected SU(2) Yang-Mills action for renormalisation group flows
Filipe Freire
The dual Meissner effect scenario of confinement is discussed by studying the low energy regime of SU(2) Yang-Mills in a maximal Abelian gauge. The Abelian projected effective acti…
Gauge invariance, background fields and modified Ward identities
F. Freire, D. F. Litim, J. M. Pawlowski
In this talk the gauge symmetry for Wilsonian flows in pure Yang-Mills theories is discussed. The background field formalism is used for the construction of a gauge invariant effec…