44 citations · 202 across the 14 of their papers we have counts for
14 papers
Reduction of Order and Transseries Structure of Radiation Reaction
Robin Ekman
The Landau-Lifshitz equation is obtained from the Lorentz-Abraham-Dirac equation through `reduction of order'. It is the first in a divergent series of approximations that, after r…
Reduction of order, resummation and radiation reaction
Robin Ekman, Tom Heinzl, Anton Ilderton
The Landau-Lifshitz equation is the first in an infinite series of approximations to the Lorentz-Abraham-Dirac equation obtained from `reduction of order'. We show that this series…
Exact solutions in radiation reaction and the radiation-free direction
Robin Ekman, Tom Heinzl, Anton Ilderton
We present new exact solutions of the Landau-Lifshitz and higher-order Landau-Lifshitz equations describing particle motion, with radiation reaction, in intense electromagnetic fie…
High-intensity scaling in UV-modified QED
Robin Ekman, Tom Heinzl, Anton Ilderton
QED perturbation theory in a background field has been conjectured to break down for sufficiently high field intensity. The high-intensity behavior of a field theory is however int…
Kinetic theory for spin-1/2 particles in ultra-strong magnetic fields
Haidar Al-Naseri, Jens Zamanian, Robin Ekman +1
When the Zeeman energy approaches the characteristic kinetic energy of electrons, Landau quantization becomes important. In the vicinity of magnetars, the Zeeman energy can even be…
Back-reaction in strong field QED: a toy model
Robin Ekman, Anton Ilderton
As a toy model for QED in strong background fields, we consider the impact of back-reaction and loop effects on scattering processes in quantum optics. We show that neglecting back…
Short-scale quantum kinetic theory including spin-orbit interactions
Robin Ekman, Haidar Al-Naseri, Jens Zamanian +1
We present a quantum kinetic theory for spin- particles, including the spin-orbit interaction, retaining particle dispersive effects to all orders in , based on a gauge…
Two toy models for the motion of a leaky tank car
Robin Ekman
I present two toy models for the motion of a tank car as fluid drains out of an off-center opening, based on replacing the fluid with particles. No knowledge beyond simple Lagrangi…
Relativistic kinetic theory for spin-1/2 particles: Conservation laws, thermodynamics, and linear waves
R. Ekman, H. Al-Naseri, J. Zamanian +1
We study a recently derived fully relativistic kinetic model for spin-1/2 particles. Firstly, the full set of conservation laws for energy, momentum and angular momentum are given,…
Do hydrodynamic models misestimate exchange effects? Comparison with kinetic theory for electrostatic waves
Gert Brodin, Robin Ekman, Jens Zamanian
We have extended previous kinetic results to compute the exchange correction to the electrostatic electron susceptibility for arbitrary frequencies and wavenumbers in the low tempe…
Quantum kinetic theories in degenerate plasmas
Gert Brodin, Robin Ekman, Jens Zamanian
In this review we give an overview of recent work on quantum kinetic theories of plasmas. We focus, in particular, on the case where the electrons are fully degenerate. For such sy…
Fully relativistic kinetic equation for spin-1/2 particles in the long scale-length approximation
Robin Ekman, Felipe A. Asenjo, Jens Zamanian
In this paper we derive a fully relativistic kinetic theory for spin-1/2 particles and its coupling to Maxwell's equations, valid in the long scale-length limit, where the fields v…
Nonlinear wave damping due to multi-plasmon resonances
Gert Brodin, Robin Ekman, Jens Zamanian
For short wavelengths, it is well known that the linearized Wigner-Moyal equation predicts wave damping due to wave-particle interaction, where the resonant velocity shifted from t…
Exchange effects in a cold plasma
Robin Ekman, Jens Zamanian, Gert Brodin
We have studied the exchange corrections to linear electrostatic wave propagation in a plasma using a quantum kinetic formalism. Specifically we have considered the zero temperatur…