Bulletin of the American Physical Society
APS April Meeting 2019
Volume 64, Number 3
Saturday–Tuesday, April 13–16, 2019; Denver, Colorado
Session B11: Early Universe and Dark Energy
10:45 AM–12:33 PM,
Saturday, April 13, 2019
Sheraton
Room: Governor's Square 17
Sponsoring
Unit:
DAP
Abstract: B11.00004 : Quantum Kinetics in the Early Universe*
11:21 AM–11:33 AM
View Presentation Abstract
Presenter:
Chad Kishimoto
(University of San Diego, University of California, San Diego)
Author:
Chad Kishimoto
(University of San Diego, University of California, San Diego)
In the early universe, the evolution of neutrino states are complicated by both their coherent quantum evolution and their de-coherent kinetic evolution. The results of this quantum kinetic evolution are manifest in precision cosmological measurements, and may be important in the production of dark matter or other beyond standard model processes. This talk will focus on the quantum kinetic evolution of neutrino states in the early universe, where the quantum mechanical oscillation rate and scattering rate are both fast compared to the dynamical expansion rate. In this regime, we notice that the states quickly evolve to a point where the coherent and de-coherent effects balance, attaining a local quantum kinetic equilibrium that slowly evolves with the expanding universe.
*NSF grant PHY-1812383
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