All articles tagged with #closed timelike curve
A new physics study suggests that, within general relativity, closed timelike curves (CTCs) and post-selected CTCs could, in principle, allow messages to travel back in time. The idea echoes Interstellar’s plot and remains theoretical, with researchers planning photon-based experiments to test the concept while avoiding paradoxes through post-selection.
MIT researchers and collaborators show, in theory, that information could be sent to the past via quantum simulations of post-selected closed timelike curves (P-CTCs); they find backward transmission could, under certain noisy-channel conditions, be more efficient than forward, with self-consistent loops helping avoid paradoxes. The work is purely theoretical and does not involve real spacetime bending, but it extends ideas in quantum information and entanglement about time-like information flow.