Formalism
Definition
Spacetime configurations
Properties
Spacetimes
| black hole spacetimes | vanishing angular momentum | positive angular momentum |
|---|---|---|
| vanishing charge | Schwarzschild spacetime | Kerr spacetime |
| positive charge | Reissner-Nordstrom spacetime | Kerr-Newman spacetime |
Quantum theory
Given a point in Minkowski spacetime, its light cone is the subspace of all lightlike vectors at that point.
More generally for a point in a Lorentzian manifold , its lightcone is the lightcone in the tangent space .
Sometimes one also calls the collection of all time-like vectors the light cone, then denoted . On a time oriented spacetime this decomposes into the future cone and the past cone .
All these are conical sets.
Last revised on October 31, 2017 at 13:26:03. See the history of this page for a list of all contributions to it.