Linked Questions

0 votes
1 answer
138 views

What exactly are the Differential Forms in Maxwell's Equations? [duplicate]

While trying to understand Maxwell's equations (having learned a bit about manifolds) I encounter the following issue: Gauss' Law seems to integrate the electric field $E$ over a $2$-manifold, ...
Sam's user avatar
  • 379
1 vote
0 answers
98 views

5-dimensional electrodynamics [duplicate]

In the traditional 3+1 spacetime, Maxwell's equations také the following form: $\nabla × \mathbf E = -\frac 1 c\frac {\partial \mathbf B} {\partial t}$ $\nabla \cdot \mathbf B=0$ $\nabla \cdot \...
FusRoDah's user avatar
  • 884
89 votes
7 answers
14k views

Do Maxwell's Equations overdetermine the electric and magnetic fields?

Maxwell's equations specify two vector and two scalar (differential) equations. That implies 8 components in the equations. But between vector fields $\vec{E}=(E_x,E_y,E_z)$ and $\vec{B}=(B_x,B_y,B_z)$...
Warrick's user avatar
  • 9,785
81 votes
7 answers
8k views

Does Coulomb's Law, with Gauss's Law, imply the existence of only three spatial dimensions?

Coulomb's Law states that the fall-off of the strength of the electrostatic force is inversely proportional to the distance squared of the charges. Gauss's law implies that the total flux through a ...
Justin L.'s user avatar
  • 6,030
43 votes
4 answers
21k views

Why don't magnetic monopoles exist? [closed]

Electric monopoles do exist, but magnetic monopoles don't. Why? The question is closed because I need to clarify it, but I don't know how I could ask it another way. However, I've recieved many ...
Nicole Judge's user avatar
36 votes
1 answer
10k views

How to define orbital angular momentum in other than three dimensions?

In classical mechanics with 3 space dimensions the orbital angular momentum is defined as $$\mathbf{L} = \mathbf{r} \times \mathbf{p}.$$ In relativistic mechanics we have the 4-vectors $x^{\mu}$ and ...
asmaier's user avatar
  • 10k
29 votes
2 answers
2k views

Basis for the Generalization of Physics to a Different Number of Dimensions

I am reading this really interesting book by Zwiebach called "A First Course in String Theory". Therein, he generalizes the laws of electrodynamics to the cases where dimensions are not 3+1. It's an ...
user avatar
18 votes
2 answers
3k views

Is it possible to generalize the Maxwell equations to higher dimensions?

The usual Maxwell equations are for 3 spatial dimensions, right? Is it possible to generalize them to 2 spatial dimensions or 4 spatial dimensions?
poisson's user avatar
  • 2,165
5 votes
3 answers
3k views

Why are there 4 Dimensions and 4 Fundamental Forces?

Is it a coincidence that there are four fundamental forces and four spacetime dimensions ? Does a universe with three spacetime dimension contain four fundamental forces? Can magnetism be realized in ...
user avatar
0 votes
2 answers
1k views

Justifying Gauss Law in 1D

From Maxwell equations, Gauss Law read: $\nabla\cdot\vec{E} = \rho/\epsilon_0$ Integrating this divergence over some volume and applying the Divergence theorem leads to: $\int \vec{E}\cdot d\vec{S} = ...
Aesku's user avatar
  • 373
1 vote
2 answers
592 views

Maxwell's equations in differential form in 2-space+1-time dimensions

How does one write maxwell's equation in 2+1 dimensions? It becomes particularly interesting as the components of 2 forms and 1 form are 3. Are there any sources for this?
user avatar
0 votes
2 answers
540 views

Is curl of a vector a scalar quantity in 2 spatial dimensions? If it is so, then somebody help me understanding Maxwell's equations in 2+1 D

I have seen on wikipedia that in 2 spatial dimensions, Green's theorem, Gauss's divergence and Stokes theorems are equivalent and it makes sense. When I tried to write Maxwell's equations in 2+1 ...
Sami Khan's user avatar
2 votes
1 answer
385 views

Electric potential energy in $1+1$-dimensional space-time

In $1+1$-dimensional space-time, Gauss's law implies that $$\int\ \vec{E}\cdot{d\vec{A}}=\displaystyle{\frac{Q}{\epsilon_{0}}} \implies 2 E =\displaystyle{\frac{Q}{\epsilon_{0}}} \implies E =\...
nightmarish's user avatar
  • 3,243
0 votes
1 answer
87 views

How to get $\vec{B}$ from $\vec{H}$ in hyperspatial ($n>3$) electromagnetism?

So I’m currently trying to formulate Maxwell’s equations in dimensions in other than 3 in order to improve my understanding of electromagnetism. In 3D, Maxwell’s equations can be described by $$\begin{...
Laff70's user avatar
  • 780
1 vote
1 answer
90 views

Magnetic vector potential in 1+1 spacetime dimensions

In the theory of electromagnetism in 1+1 spacetime dimensions (one temporal and one spatial coordinate), one can define the 2-potential vector (analogous to the 4-potential vector in 3+1 spacetime ...
Daniel Vainshtein's user avatar

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