2 papers
hep-ph2026
Consistent Thermal Resummation and Phase Transitions with 2PI Methods
Amitayus Banik, Kimmo Kainulainen
We apply the two-particle irreducible (2PI) formalism as a framework for a consistent thermal resummation in studies of cosmological phase transitions. Considering a model with two…
hep-ph2026
Tachyonic particle production: quantum 2PI formalism with momentum exchanging collisions
Kimmo Kainulainen, Sami Nurmi, Olli Väisänen
Oscillating spacetime curvature can drive particle production during reheating, whose accurate modeling requires the use of non-perturbative out-of-equilibrium methods. Tachyonic i…