Holographic Cosmology


McFadden, P. (2023). Holographic Cosmology. Perimeter Institute. https://pirsa.org/23050124


McFadden, Paul. Holographic Cosmology. Perimeter Institute, May. 10, 2023, https://pirsa.org/23050124


          @misc{ pirsa_23050124,
            doi = {10.48660/23050124},
            url = {https://pirsa.org/23050124},
            author = {McFadden, Paul},
            keywords = {Quantum Gravity, Cosmology},
            language = {en},
            title = {Holographic Cosmology},
            publisher = {Perimeter Institute},
            year = {2023},
            month = {may},
            note = {PIRSA:23050124 see, \url{https://pirsa.org}}

Paul McFadden Newcastle University


Holography has profoundly transformed our understanding of quantum gravity in spacetimes with asymptotic negative curvature. Its implications for cosmology are equally profound, suggesting that time is emergent and that our universe has a dual description in terms of a three-dimensional quantum field theory. This talk will outline key features of holographic cosmology, from the perspective it offers for the cosmic singularity to the strategies it presents for computing cosmological observables. Recent results for the de Sitter wavefunction will be discussed and their interpretation in the language of three-dimensional conformal field theory.