Hannover 2013 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 22: Poster: Interaction with strong or short laser pulses

A 22.6: Poster

Dienstag, 19. März 2013, 16:00–18:30, Empore Lichthof

Time evolution of the vacuum – pair production in high intensity laser fields — •Anton Wöllert, Heiko Bauke, and Christoph H. Keitel — Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany

Interaction between the vacuum and high intensity lasers will lead to new possibilities in high-field physics [1–2]. We present numerical ab initio studies for time evolution of the vacuum state into multiple pair states. The high intensity laser field of two counter-propagating beams is treated classically and in the non-perturbative regime (E₀/ω ∼ 1). In this regime, the time needed by an electron to become relativistic in presence of a static field E₀ is of same order as the period of the laser field. Pair state probabilities as well as correlations are investigated in real-time depending on polarization and field strength.