AT2  
Speaker 
Hoang, Vu 
Coauthors 

Talk Title 
SelfForce In HigherOrder Electrodynamics 
Abstract 
In classical electrodynamics, the selfforce of a charged particle on itself is undefined, leading to a major inconsistency. One suggested way out is to consider the field equations of higherorder electrodynamics as proposed by Bopp, Lande, Thomas and Podolsky. This theory modifies the Maxwell Lagrangian by adding terms containing higherorder derivatives of the field tensor. A recent result by M. Kiessling and A. S. TahvildarZadeh shows indeed that the Cauchy problem with fields and charged particles is locally wellposed in BLTP electrodynamics. The key realization is to define the selfforces via overall momentum conservation of the system consisting of charged particles and fields. Inspired by this result, I look at the selfforce problem for a single particle interacting with the BLTP field in flat spacetime. Starting from the postulate of momentum conservation, I show rigorously that a covariant expression for selfforce can be derived from the postulate of momentum conservation. The selfforce coincides with an expression previously given by J. Gratus, V. Perlick and R. Tucker who used an additional averaging procedure. 
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