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      Laser intensity effects in noncommutative QED

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          Abstract

          We discuss a two-fold extension of QED assuming the presence of strong external fields provided by an ultra-intense laser and noncommutativity of spacetime. While noncommutative effects leave the electron's intensity induced mass shift unchanged, the photons change significantly in character: they acquire a quasi-momentum that is no longer light-like. We study the consequences of this combined noncommutative strong-field effect for basic lepton-photon interactions.

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          Optics in the relativistic regime

          Gerard A. Mourou, Toshiki Tajima, Sergei V. Bulanov (2006)
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            Noncommutative Field Theory

            Michael Douglas, Nikita Nekrasov (2001)
            We review the generalization of field theory to space-time with noncommuting coordinates, starting with the basics and covering most of the active directions of research. Such theories are now known to emerge from limits of M theory and string theory, and to describe quantum Hall states. In the last few years they have been studied intensively, and many qualitatively new phenomena have been discovered, both on the classical and quantum level. To appear in Reviews of Modern Physics.
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              Nonlinear collective effects in photon-photon and photon-plasma interactions

              M Marklund, P K Shukla (2006)
              We consider strong-field effects in laboratory and astrophysical plasmas and high intensity laser and cavity systems. Current state-of-the-art laser facilities are close to reaching energy scales at which quantum electrodynamics will play a crucial role in the dynamics of plasmas and indeed the vacuum itself. Developments such as the free electron laser may also give a means for exploring remote violent events such as supernovae in a laboratory environment. Here we describe the implications of collective interactions between photons and photon-plasma systems. We give an overview of strong field vacuum effects and a set of equations describing the nonlinear propagation of an electromagnetic pulse on a radiation-plasma is derived. Effects introduced by QED in pair plasmas is described. Applications to laser-plasma systems and astrophysical environments are discussed.
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                Author and article information

                Journal
                Publication date Created: 03 September 2009
                Publication date Updated: 2010-02-17
                Article
                DOI: 10.1103/PhysRevD.81.051902
                ArXiV ID: 0909.0656
                SO-VID: 986c0f46-5080-4fdd-8cb3-8e33e564b6b1
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                http://arxiv.org/licenses/nonexclusive-distrib/1.0/

                History
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                Journal reference Phys.Rev.D81:051902,2010
                Comments 5 pages, 1 figure. References added, typos corrected, bounds on noncommutativity scale added. Version to appear in PRD Rapid Communications
                Categories hep-ph

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