A forest formula to subtract infrared singularities in amplitudes for wide-angle scattering
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep05(2020)012
Abstract: For any hard QCD amplitude with massless partons, infrared (IR) singularities arise from pinches in the complex planes of loop momenta, called pinch surfaces. To organize and study their leading behaviors in the neighborhoods of… read more here.
Keywords: infrared singularities; forest formula; subtract infrared; formula subtract ... See more keywords
Non-Fermi liquids at finite temperature: Normal-state and infrared singularities
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.96.144508
Abstract: We analyze quantum criticality at finite temperature for a class of non-Fermi liquids with massless bosons. Finite temperature gives rise to new infrared singularities that invalidate standard perturbative treatments. We show how such divergences are… read more here.
Keywords: finite temperature; temperature; fermi liquids; infrared singularities ... See more keywords