PIRSA:18010074

Thermodynamics and Holography for de Sitter Space

Visser, M. (2018). Thermodynamics and Holography for de Sitter Space. Perimeter Institute. https://pirsa.org/18010074

Visser, Manus. Thermodynamics and Holography for de Sitter Space. Perimeter Institute, Jan. 09, 2018, https://pirsa.org/18010074 

          @misc{ pirsa_PIRSA:18010074,
            doi = {10.48660/18010074},
            url = {https://pirsa.org/18010074},
            author = {Visser, Manus},
            keywords = {Cosmology},
            language = {en},
            title = {Thermodynamics and Holography for de Sitter Space},
            publisher = {Perimeter Institute},
            year = {2018},
            month = {jan},
            note = {PIRSA:18010074 see, \url{https://pirsa.org}}
          }

Manus Visser

University of Cambridge

Talk number
PIRSA:18010074
Collection
Talk Type
Subject
Abstract

In this talk I will present new insights on a microscopic holographic theory for de Sitter space. I will focus on the static patch of dS, which describes our universe to a good approximation at late times. We use a conformal map between dS and the BTZ black hole times a sphere to relate the general microscopic properties of dS to those of symmetric product CFTs. In 2d CFT language, de Sitter space corresponds to a thermal bath of long string. The long string phenomenon exhibited by these CFTs implies that the excitation energy decreases at large distances in dS (contrary to the UV/IR relation in AdS/CFT). It also explains the smallness of the vacuum energy of dS. Similar results apply to Minkowski space and AdS below its curvature radius.