[Soft-matter] Soft Matter and Stat Phys Seminar on 8 Apr 2022

[Maciej Lisicki]

Dear Soft Matter Colleagues and Friends,

On Friday 8 April 2022 at 9:30 AM at the UW Faculty of Physics (Pasteura 5, Warsaw; room 1.40) we are hosting a seminar during which

Paweł Zin (NCBJ – National Centre for Nuclear Research)

will give a talk

Non-existence of causal classical electrodynamics of point scalar charged particles

Abstract
Usually at last pages of classical electrodynamics books it is shown, that due to radiation emitted by accelerating point charged particles, Lorentz force is not enough to provide energy and momentum conservation in the system. The need of additional force appears. The most popular form of this force (known as self-force or radiation reaction force) is the Lorentz-Abraham-Dirac (LAD) force proportional to time derivative of acceleration. However LAD force is known to provide non-causal particle trajectories (the particle starts to move before the arrival of the external electromagnetic field). To cure this behavior few causal theories were proposed. However they all lead to unphysical phenomena. The long search for correct theory suggests that such does not exist. In my talk I will present a proof of non-existence of causal classical electrodynamics of point scalar charged particles.

We warmly welcome everyone to attend the talk and the Soft Matter Coffee Break after the seminar, held in room 4.51 (4th floor).

Maria Ekiel-Jeżewska
Maciej Lisicki
Piotr Szymczak
Panagiotis Theodorakis 




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