Physics beyond the Horizon

          @misc{ scivideos_PIRSA:08020040,
            doi = {10.48660/08020040},
            url = {https://pirsa.org/08020040},
            author = {Afshordi, Niayesh},
            keywords = {Cosmology},
            language = {en},
            title = {Physics beyond the Horizon},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2008},
            month = {feb},
            note = {PIRSA:08020040 see, \url{https://scivideos.org/index.php/pirsa/08020040}}
          }
          

Abstract

The history of human knowledge is often highlighted by our efforts to explore beyond our apparent horizon. In this talk, I will describe how this challenge has now evolved into our quest to understand the physics at/beyond the cosmological horizon, some twenty orders of magnitude above Columbus\' original goal. I then recount how the study of physics on the horizon scale has led to the successful development of inflationary cosmology, and how we can use the Integrated Sachs-Wolfe effect in the Cosmic Microwave Background to probe cosmological physics, such as late-time inflation, the nature of gravity, and primordial non-gaussianity on the horizon scale.