Strong field effects in laser pulses: the Wigner formalism
2011 (English)In: Physical Review D, ISSN 1550-7998, Vol. 83, 065007- p.Article in journal (Refereed) Published
We investigate strong field vacuum effects using a phase space approach based on the Wigner formalism. We calculate the Wigner function in a strong null-field background exactly, using lightfront field theory. The Wigner function exhibits the distinct features of strong field QED: in particular we identify the effective mass in a laser pulse, compare it to the well-known mass shift in a periodic plane wave and identify signals of multi-photon absorption and emission. Finally, we show how to extend our results to descibe vacuum pair production in colliding laser pulses.
Place, publisher, year, edition, pages
2011. Vol. 83, 065007- p.
IdentifiersURN: urn:nbn:se:umu:diva-39229OAI: oai:DiVA.org:umu-39229DiVA: diva2:388590