Polarized Gravitational Waves from Cosmological Phase Transitions
Leonard Kisslinger, Tina Kahniashvili
TL;DR
This paper estimates the circular polarization of gravitational waves produced during electroweak and QCD phase transitions, focusing on the effects of kinetic and magnetic helicity from bubble collisions.
Contribution
It provides the first estimation of gravitational wave polarization levels resulting from cosmological phase transitions considering helicity effects.
Findings
Circular polarization levels depend on helicity generated during phase transitions.
Magnetic and kinetic helicity significantly influence gravitational wave polarization.
Results suggest potential observability of polarized gravitational waves from early universe events.
Abstract
We estimate the degree of circular polarization for the gravitational waves generated during the electroweak and QCD phase transitions from the kinetic and magnetic helicity generated by bubble collisions during those cosmological phase transitions.
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