Title:
Fractional effective action at strong electromagnetic fields
Author(s):
Kleinert, Hagen; Strobel, Eckhard; Xue, She-Sheng
Year of publication:
2013
Available Date:
2014-03-10
Abstract:
In 1936, Weisskopf [K. Dan. Vidensk. Selsk. Mat. Fys. Medd. XIV (1936)] showed
that for vanishing electric or magnetic fields the strong-field behavior of
the one-loop Euler-Heisenberg effective Lagrangian of quantum electro dynamics
(QED) is logarithmic. Here we generalize this result for different limits of
the Lorentz invariants E⃗ 2−B⃗ 2 and B⃗ ·E⃗ . The logarithmic dependence can
be interpreted as a lowest-order manifestation of an anomalous power behavior
of the effective Lagrangian of QED, with critical exponents δ=e2/(12π) for
spinor QED, and δS=δ/4 for scalar QED.
Part of Identifier:
ISSN (print): 1550-7998
DDC-Classification:
530 Physik
Publication Type:
Wissenschaftlicher Artikel
Also published in:
Physical Review D. - 88 (2013), 2, Artikel Nr. 025049/1-15
URL of the Original Publication:
DOI of the Original Publication:
Department/institution:
Physik
Institut für Theoretische Physik
Comments:
Der Artikel wurde in einer Open-Access-Zeitschrift publiziert.
