|
Speaker |
Sengupta, Sandipan |
|
Coauthors |
|
| Talk Title |
Time Travel Using Degenerate Metrics |
|
Abstract |
In classical gravity theory, we present explicit examples of vacuum solutions that admit the possibility of time travel (to the past) through their geodesics. These geometries are built upon metrics whose determinant can continuously go to zero over some extended region of the spacetime. These solutions to the first order field equations satisfy the energy conditions. One may see the existence of these solutions as a motivation to revisit the status of causality in the formulation of classical gravity. |
|
Talk view |
|
|
|
|