Münster 2017 – scientific programme

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T: Fachverband Teilchenphysik

T 42: Astroteilchenphysik/Kosmologie (Theorie) 1

T 42.4: Talk

Tuesday, March 28, 2017, 11:45–12:00, VSH 17

Nonequilibrium dynamics of inhomogenous quantum fields — •Thomas Garratt — Julius-Maximilians-Universitaet Wuerzburg

The dynamics of inhomogeneous quantum fields out of equilibrium are especially relevant for the study of first-order phase transitions. It is our aim to calculate how critical bubbles of the new phase, that form in such a process, propagate for different models. The Electroweak phase transition in the early universe is of particular interest, since Baryogenesis can potentially explain the matter-antimatter asymmetry in the Universe for fitting dynamical properties of the phase transition and the bubble collisions result in gravitational waves. To calculate the dynamics of quantum bubbles we have developed a computer program that solves the non-equilibrium equations of motion in the so called 2PI-Formalism. As a starting point we have simulated the dynamics of bubbles in a scalar λ₄ φ⁴ + λ₆ φ⁶ toy model in (1+1)-dimensions.