Multi-photon emission in QED with strong background fields
Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
In recent and upcoming years new lasers are being constructed withever higher intensity. These lasers open up the possibility of probingthe high intensity regime of particle physics, which will lead to etherconrming our current models in this regime or the discovery of beyondstandard model physics. However most previous theoretical results in thisarea are based old assumptions about the intensity and shape of the laserpulse that are no longer valid. In this thesis we calculate the tree-levelprobabilities for multi photon emission from an electron propagating inan arbitrary plane wave electromagnetic eld. We show that the classicallimit of our result agrees with the purely classical description of the sameevent. We calculate the soft emission correction to non-linear Comptonscattering. We conclude that our results are infrared divergent and arguethat this will be solved by including loop contributions to the process. Ourresults provide an important component for the theoretical predictions forthe outcome of scattering experiments in high intensity background eld.This thesis will add to the understanding of high intensity QED.
Place, publisher, year, edition, pages
2012. , 33 p.
QED, laser, electron, photon
IdentifiersURN: urn:nbn:se:umu:diva-56265OAI: oai:DiVA.org:umu-56265DiVA: diva2:532830
Subject / course
Examensarbete i teknisk fysik
Civilingenjörsprogrammet i teknisk fysik
2012-06-04, NA332, Umeå Universitet, Umeå, 14:13 (Swedish)
UppsokPhysics, Chemistry, Mathematics
Ilderton, Antony, Dr.
Marklund, Mattias, Prof.