A charged particle in constant gravitational field

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SUMMARY

The discussion centers on the paradox in classical electrodynamics regarding a charged particle falling under gravity. The Larmor formula indicates that the power radiated by the charge is proportional to the square of the acceleration (g²), while the Abraham-Lorentz formula, which accounts for radiation reaction, yields zero due to its dependence on the time derivative of acceleration. This discrepancy highlights the limitations of the Abraham-Lorentz formula in scenarios involving constant acceleration, such as a gravitational field.

PREREQUISITES
  • Understanding of classical electrodynamics principles
  • Familiarity with the Larmor formula
  • Knowledge of the Abraham-Lorentz formula
  • Concept of radiation reaction in accelerating charges
NEXT STEPS
  • Research the implications of the Larmor formula in non-inertial frames
  • Explore advanced topics in radiation reaction theory
  • Study the effects of constant acceleration on charged particles
  • Investigate alternative formulations of electrodynamics
USEFUL FOR

Physicists, electrical engineers, and students studying classical electrodynamics who are interested in the nuances of radiation from accelerating charges.

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In classical electrodynamics a paradox arises when we compare the power radiated by a charge falling under gravity using larmor formula (proportional to square of the acceleration, hence g^2) but the radiation reaction , given by abraham lorentz formula gives zero.(since it depends on the time derivative of the acceleration) ie. the external power required to counteract the radiation reaction is zero. I haven't come across any good explanation. Can someone please help me out? Thanks.
 
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The abraham lorentz formula does not apply to constant acceleration.
 
i see ..thanks.
 

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