Closed timelike curves

[caharris]

So, I sort of jumped the gun when I started reading up on closed timelike curves (CTC), and while I think I understand the concept, I was wondering if anyone could give me a sort of crash course on CTC. I found a good number of papers about it from just this year, and I know that Hawking mentioned it before, but a lot of it just went over my head.

 

Thank you all for your help in advance.

 

 

 

Also, here are some of the papers that I had downloaded. Maybe someone can read one and give me a simplified version of it.

Closed timelike curves via post-selection - theory and experimental demonstartion.pdf

Revisiting consistency conditions for quantum states of systems on closed timelike curves - an epistemic perspective.pdf

Quantum mechanics of time travel through post-selected teleportation.pdf