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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

Pirsa: 13010005 - Solid of Inflation: An alternative symmetry breaking pattern for an EFT of inflation

Speaker(s):

Solomon Endlich

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Abstract:

In this talk I will discuss a cosmological model where primordial inflation is driven by a `solid', defined as a system of three derivatively coupled scalar fields obeying certain symmetries and spontaneously breaking a certain subgroup of these. The symmetry breaking pattern differs drastically from that of standard inflationary models: time translations are unbroken. This prevents our model from fitting into the standard effective field theory description of adiabatic perturbations. Consequently, it exhibits a novel non-Gaussian `shape'.
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