18 citations · 36 across the 7 of their papers we have counts for
3 papers · 1 filter
Ising and XY paramagnons in two-dimensional 2H-NbSe
A. T. Costa, M. Costa, J. Fernández-Rossier
Paramagnons are the collective modes that govern the spin response of nearly magnetic conductors. In some cases they mediate electron pairing leading to superconductivity. This sce…
Gauge-invariant Renormalization of the Gluino-Glue operator
Marios Costa, George Panagopoulos, Haralambos Panagopoulos +1
We study the Gluino-Glue operator in the context of Supersymmetric Yang-Mills (SYM) theory. This composite operator is gauge invariant, and it is directly connected…
Gauge-invariant Renormalization Scheme in QCD: Application to fermion bilinears and the energy-momentum tensor
M. Costa, I. Karpasitis, G. Panagopoulos +4
We consider a gauge-invariant, mass-independent prescription for renormalizing composite operators, regularized on the lattice, in the spirit of the coordinate space (X-space) reno…