Eeective Lagrangians and Low Energy Photon-photon Scattering Typeset Using Revt E X 1
نویسنده
چکیده
We investigate the behavior of the photon-photon scattering near the threshold ! = m e , by comparing the exact result with the approximation obtained using the Euler-Heisenberg eeective Lagrangian supplemented with higher-order derivative corrections. We also examine the ! 2 =m 2 e behavior predicted by including one-loop corrections to the Euler-Heisenberg eeective Lagrangian together with the necessary counterterms. At the one-loop level, it is not possible to reproduce the ! 2 =m 2 e dependence of QED by simply using the Euler-Heisenberg expansion.
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تاریخ انتشار 2007