Now showing items 1-10 of 44
High-Intensity QED beyond the Locally Constant Field Approximation
The locally constant field approximation (LCFA) underlies the numerical simulation of QED processes in plasma physics, astrophysics, and intense laser physics. The validity of the LCFA has been questioned in the parameter ...
Toward the observation of interference effects in nonlinear Compton scattering
(Elsevier BV, 2020-05-10)
Superintegrable relativistic systems in scalar background fields
(IOP Publishing, 2018-11-09)
We consider a relativistic charged particle in a background scalar field depending on both space and time. Poincar\'e, dilation and special conformal symmetries of the field generate conserved quantities in the charge ...
Detecting radiation reaction at moderate laser intensities.
We propose a new method of detecting radiation reaction effects in the motion of particles subjected to laser pulses of moderate intensity and long duration. The effect becomes sizable for particles that gain almost no ...
Ice-limit of Coulomb gauge Yang-Mills theory
In this paper we describe gauge invariant multi-quark states generalising the path integral framework developed by Parrinello, Jona-Lasinio and Zwanziger to amend the Faddeev-Popov approach. This allows us to produce states ...
Stability, creation and annihilation of charges in gauge theories
We show how to construct physical, minimal energy states for systems of static and moving charges. These states are manifestly gauge invariant. For charge–anticharge systems we also construct states in which the gauge ...
Colour, copies and confinement
Symmetry breaking, conformal geometry and gauge invariance
When the electroweak action is rewritten in terms of SU(2) gauge-invariant variables, the Higgs can be interpreted as a conformal metric factor. We show that asymptotic flatness of the metric is required to avoid a Gribov ...
Solution of the Gribov problem from gauge invariance
A new approach to gauge fixed Yang-Mills theory is derived using the Polyakov-Susskind projection techniques to build gauge invariant states. In our approach, in contrast to the Faddeev-Popov method, the Gribov problem ...