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KurtLudwig
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- How is the information of a change in position of a star transmitted through spacetime? What is the quantum mechanism?
Gravity is the curvature of space time. Stars move relative to each other. How is the information of this change transmitted through spacetime? I have just finished reading "Reality is not what it seems - The journey to quantum gravity" by Carlo Rovelli. (Can the content of a book be discussed on Physics Forums?) Does the information quickly travel from spinfoam to spinfoam? See page 186, the section on spinfoams. It is stated that spinfoams will bend spacetime. But it does not describe the mechanism of changes. Maybe it is beyond the scope of this book. I assume that changes happen at the speed of light.