Time: Monday November 11th 11:00am
Place: 241 Nicholson
Abstract:
I will focus on the understanding of big bang singularity and briefly review how we may avoid it from the approaches of effective field theory. This can be viewed as an important phenomenological step towards quantum gravity. I will talk about the corresponding perturbation theory of primordial cosmological perturbations within this frame and the predictions we could make for observations. Part of them have already been able to be constrained by the present CMB data, while more are expected in forthcoming data, namely the CMB polarization.
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