13 citations · 35 across the 4 of their papers we have counts for
4 papers
Momentum expansions in finite-density perturbative calculations
Mika Nurmela, Juuso Österman
Complex-valued Feynman integrals in the imaginary time formalism and zero-temperature limit suffer from particular types of infrared divergences that can not be regulated by integr…
Integrating by parts at finite density
Juuso Österman, Philipp Schicho, Aleksi Vuorinen
Both nonzero temperature and chemical potentials break the Lorentz symmetry present in vacuum quantum field theory by singling out the rest frame of the heat bath. This leads to co…
Augmenting the residue theorem with boundary terms in finite-density calculations
Tyler Gorda, Juuso Österman, Saga Säppi
At zero temperature and finite chemical potential, -dimensional loop integrals with complex-valued integrands in the imaginary-time formalism yield results dependent on the inte…
Soft photon propagation in a hot and dense medium to next-to-leading order
Tyler Gorda, Aleksi Kurkela, Juuso Österman +5
We present the first complete calculation of the soft photon self-energy to the next-to-leading order in a hot and/or dense ultrarelativistic plasma in Quantum Electrodynamics (QED…