The (A)temporal Emergence of Spacetime

31 Oct 2017  ·  Huggett Nick, Wuthrich Christian ·

This paper examines two cosmological models of quantum gravity (from string theory and loop quantum gravity) to investigate the foundational and conceptual issues arising from quantum treatments of the big bang. While the classical singularity is erased, the quantum evolution that replaces it may not correspond to classical spacetime: it may instead be a non-spatiotemporal region, which somehow transitions to a spatiotemporal state... The different kinds of transition involved are partially characterized, the concept of a physical transition without time is investigated, and the problem of empirical incoherence for regions without spacetime is discussed. read more

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History and Philosophy of Physics General Relativity and Quantum Cosmology