Gott-Li Self-Creating Universe: A Cosmos That Is Its Own Mother
In a 1998 paper, physicists J. Richard Gott and Li-Xin Li proposed that the early universe could contain a region of {{closed timelike curves}}, allowing the universe to loop back and create itself with no external first cause. The model treats the cosmic origin problem as the wrong question rather than an unanswerable one.
The self-creating universe is a speculative cosmological model published by Princeton physicists J. Richard Gott III and Li-Xin Li in their 1998 Physical Review D paper "Can the Universe Create Itself?" The authors argue that asking how to make something from nothing may be the wrong question, and instead ask whether the laws of physics forbid the universe from creating itself. Because spacetime in general relativity can be curved and multiply connected, it permits closed timelike curves, which they use to build a causal loop at the cosmic origin. In the model, tracing time backward through the early inflationary state eventually leads into a region of closed timelike curves rather than to a unique first moment. Gott offered the analogy that the universe could be its own mother, like a tree branch that circles around to become the trunk. He compared the search for a first event to looking for the easternmost point on Earth: one can keep going east endlessly with no easternmost point, so every event in the early universe has events preceding it and there is no first cause. This makes the universe the ultimate bootstrap paradox, a closed self-consistent structure with no external input, conceptually parallel to small-scale time-travel loops that lack an origin. The proposal is controversial and not part of mainstream cosmology, but it is genuine published physics that addresses the first-cause problem. The Hartle-Hawking no-boundary proposal pursues a related goal by different means. See The Universe as a Bootstrap Loop: Origin Without a First Cause.