Time Travel to the Past: CTC or Wormhole?

[novella]

In theory, is time travel to the past possible by traveling completely around the loop of the CTC (where it would seem future links with its own past) or is a wormhole the only way to time travel by way of short cutting the CTC.

 

[nitsuj]

In theory, is time travel to the past possible by traveling completely around the loop of the CTC (where it would seem future links with its own past) or is a wormhole the only way to time travel by way of short cutting the CTC.

I'm not aware of any formal physics definition for a "wormhole" and have always thought of a CTC being the same thing as a wormhole.

So what's a wormhole?

 

[Nugatory]

I'm not aware of any formal physics definition for a "wormhole" and have always thought of a CTC being the same thing as a wormhole.

So what's a wormhole?

Google for "wormhole metric".