In case all those sc…

In case all those sci-fi stories about time travel make your brain hurt (“What if I killed my own grandfather?”), don’t worry, be happy.

Quantum theory allows time travel because nothing prevents the waves from going back in time. When Greenberger and Svozil analysed what happens when these component waves flow into the past, they found that the paradoxes implied by Einstein’s equations never arise. Waves that travel back in time interfere destructively, thus preventing anything from happening differently from that which has already taken place (www.arxiv.org/quant-ph/0506027). “If you travel into the past quantum mechanically, you would only see those alternatives consistent with the world you left behind you,” says Greenberger.

I know I’ll sleep better at night now. 🙂

Filed under: Uncategorized

Like this post? Subscribe to my RSS feed and get loads more!