Fermion production in gauge theories

Speaker: 
Florian Hebenstreit (University of Heidelberg)
Event Date and Time: 
Mon, 2013-11-18 12:00 - 13:00
Location: 
Hennings 318
Fermion production in gauge theories Abstract: We investigate the production of fermions by strong background fields in Abelian gauge theories ('Schwinger effect'). We compute the non-equilibrium time evolution of gauge-invariant observables and investigate the decay of the field due to the backreaction mechanism. We discuss distinctive features of the momentum spectrum of created particles (3+1 dimensional QED) and establish a two-stage process in the dynamics of string breaking (1+1 dimensional QED). We indicate how to extend the current study to non-Abelian gauge theories to describe, e.g., quark production from gluon fields at the early stages of relativistic heavy-ion collisions.
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