Undergrad Configuring Laws of Motion: Static/Dynamic

Click For Summary
The discussion focuses on deriving Maxwell's equations from the provided equations under both static and dynamic configurations. For the static case, the equations simplify to relate the scalar potential Φ and charge density ρ, while the dynamic case introduces vector potential A and current density J. The presence of the term 2βAμ complicates the connection between the configurations, making it challenging to derive the equations directly. Participants are seeking assistance in resolving these complexities to achieve a coherent derivation of Maxwell's equations. Overall, the thread emphasizes the mathematical intricacies involved in transitioning between static and dynamic scenarios in the context of electromagnetic theory.
Maniac_XOX
Messages
86
Reaction score
5
TL;DR
Is it possible to derive equations for electric field E and magnetic B from the following equation?
$$\Box A_\alpha +\mu^2 A_\alpha = 2\beta A_\mu \partial_\alpha A^\mu + \frac {4\pi}{c} J_\alpha$$

where ##A=(\Phi, \vec A)## and ##J=(\rho, \vec J)##

using a static configuration first where ##α=0##
and then a dynamic one where ##α=i##

knowing that ##E= - \nabla^2 \Phi - \frac {\partial A}{dt}## and ##B= \nabla \times A## and ##-\nabla^2 A + \nabla (\nabla A) = \nabla \times (\nabla \times A)##

I personally tried but because of the ##2\beta A_\mu## term i cannot connect these

My attempts so far:
For static configuration $$- \frac {\partial \Phi}{c^2 \partial t^2} + \nabla^2 \Phi +\mu^2 \Phi = 2\beta A_\mu \frac {\partial A^\mu}{\partial t} + \frac {4\pi}{c} \rho$$
For dynamic configuration $$- \frac {\partial \vec A}{c^2 \partial t^2} + \nabla^2 \vec A +\mu^2 \vec A = 2\beta A_\mu \nabla \vec A + \frac {4\pi}{c} \vec J$$
 
Last edited:
Physics news on Phys.org
[CORRECTION] ##E=-\nabla \Phi- \frac {\partial A}{\partial t}##
For static configuration $$\nabla^2 \Phi +\mu^2 \Phi = + \frac {4\pi}{c} \rho$$
since in static configuration ##\frac {\partial}{\partial t}=0##

can someone help me derive Maxwell's equations for these equations if it's possible?
 
Last edited:
MOVING CLOCKS In this section, we show that clocks moving at high speeds run slowly. We construct a clock, called a light clock, using a stick of proper lenght ##L_0##, and two mirrors. The two mirrors face each other, and a pulse of light bounces back and forth betweem them. Each time the light pulse strikes one of the mirrors, say the lower mirror, the clock is said to tick. Between successive ticks the light pulse travels a distance ##2L_0## in the proper reference of frame of the clock...

Similar threads

  • · Replies 44 ·
2
Replies
44
Views
4K
  • · Replies 11 ·
Replies
11
Views
1K
  • · Replies 5 ·
Replies
5
Views
1K
  • · Replies 9 ·
Replies
9
Views
1K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 1 ·
Replies
1
Views
500
Replies
3
Views
1K