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20 papers · 1 filter
Laser absorption via QED cascades in counter propagating laser pulses
Thomas Grismayer, Marija Vranic, Joana L. Martins +2
A model for laser light absorption in electron-positron plasmas self-consistently created via QED cascades is described. The laser energy is mainly absorbed due to hard photon emis…
The generation of magnetic fields by the Biermann battery and the interplay with the Weibel instability
K. M. Schoeffler, N. F. Loureiro, R. A. Fonseca +1
An investigation of magnetic fields generated in an expanding bubble of plasma with misaligned temperature and density gradients (driving the Biermann battery mechanism) is perform…
Seeded QED cascades in counter propagating laser pulses
Thomas Grismayer, Marija Vranic, Joana L Martins +2
The growth rates of seeded QED cascades in counter propagating lasers are calculated with first principles 2D/3D QED-PIC simulations. The dependence of the growth rate on laser pol…
A Comparison of Higher-Order Weak Numerical Schemes for Stopped Stochastic Differential Equations
Francisco Bernal, Juan A. Acebrón
We review, implement, and compare numerical integration schemes for spatially bounded diffusions stopped at the boundary which possess a convergence rate of the discretization erro…
Quantum radiation reaction in head-on laser-electron beam interaction
Marija Vranic, Thomas Grismayer, Ricardo A. Fonseca +1
In this paper, we investigate the evolution of the energy spread and the divergence of electron beams while they interact with different laser pulses at intensities where quantum e…
Software Agents with Concerns of their Own
Luis Botelho, Luis Nunes, Ricardo Ribeiro +1
We claim that it is possible to have artificial software agents for which their actions and the world they inhabit have first-person or intrinsic meanings. The first-person or intr…