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Presented By: Department of Physics

Special Cosmology Seminar | Quantum Theory and Cosmology away from the Planck Regime

Daniel Sudarsky (UNAM)

We will review the so called “measurement problem” in quantum theory and argue that it becomes exacerbated in the cosmological context, and see how this connects with some problematic aspects of the standard accounts for the inflationary origin of cosmic structure.
We will argue that new physics, possibly tied to novel aspects of quantum gravity, should be invoked if we want to fully justify the phenomenological success of the basic inflationary scheme. The general view is one that has been strongly advocated by R. Penrose and we will discuss
how that can possibly be accommodated within our current understanding of the interface of quantum theory and gravitation.
We will then see, in particular that, such view leads to a modified outlook to that presented by the standard treatments, regarding the famous and yet undetected primordial tensor modes.
We will end with a proposal, motivated by the preceding discussion, of a novel approach to dealing with the so called “dark energy” puzzle.

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