Hannover 2013 – scientific programme

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A: Fachverband Atomphysik

A 33: Interaction with strong or short laser pulses III

A 33.1: Talk

Thursday, March 21, 2013, 11:00–11:15, B 302

Minicharged particles in a strong laser field — •Villalba-Chavez Selym and Müller Carsten — Institut für Theoretische Physik I, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany

Absorption of photons due to the production of pairs of minicharged particles are investigated in the presence of a high intensity laser. This hypothetical process would induce a tiny rotation of the polarization plane in a linearly polarized probe beam after travelling through the external wave (vacuum dichroism).

The optical theorem is applied to determine the rate and the corresponding rotation angle in terms of the imaginary part of the vacuum polarization tensor. A similar method has been recently applied in the calculation of the photo-production rate of scalar particles in a circularly polarized wave [S. Villalba-Chavez and C. Müller, Phys. Lett. B, in press; arXiv:1208.3595]

High-precision optical experiments would allow to impose bounds on the charge and mass of these hypothetical particles.