Relativistic Angular Momentum?

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SUMMARY

The mathematical definition of angular momentum in Special Relativity is given by the equation J = Σ (r_i × p_i), where r_i represents the positions of particles and p_i their momenta. This formulation applies to systems of massive spinless particles and is valid in both non-relativistic and relativistic mechanics. The discussion emphasizes the desire for a definition that does not rely on advanced concepts such as two-forms or tensors.

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What is the mathematical definition of Angular Momentum in Special Relativity? Is there a definition that does not require knowledge of two-forms, tensors, etc.? As always, thanks in advance.
 
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referframe said:
What is the mathematical definition of Angular Momentum in Special Relativity? Is there a definition that does not require knowledge of two-forms, tensors, etc.? As always, thanks in advance.

The total angular momentum of any system of massive spinless particles is

[tex]\mathbf{J} = \sum_{i}^N \mathbf{r}_i \times \mathbf{p}_i[/tex]

where [itex]\mathbf{r}_i[/itex] are particles positions and [itex]\mathbf{p}_i[/itex] are their momenta. This definition is valid in both non-relativistic and relativistic mechanics.
 

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