Video URL

https://pirsa.org/12050002

New Probes of Initial State of Quantum Fluctuations During Inflation

Komatsu, E. (2012). New Probes of Initial State of Quantum Fluctuations During Inflation. Perimeter Institute for Theoretical Physics. https://pirsa.org/12050002

Komatsu, Eiichiro. New Probes of Initial State of Quantum Fluctuations During Inflation. Perimeter Institute for Theoretical Physics, May. 22, 2012, https://pirsa.org/12050002 

          @misc{ scivideos_PIRSA:12050002,
            doi = {10.48660/12050002},
            url = {https://pirsa.org/12050002},
            author = {Komatsu, Eiichiro},
            keywords = {Cosmology},
            language = {en},
            title = {New Probes of Initial State of Quantum Fluctuations During Inflation},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2012},
            month = {may},
            note = {PIRSA:12050002 see, \url{https://scivideos.org/pirsa/12050002}}
          }

Eiichiro Komatsu Max-Planck-Institut für Astrophysik (MPA), Garching

DOI 10.48660/12050002
Source Repository PIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

How did inflation actually happen? Precision measurements of statistical properties of primordial fluctuations generated during inflation offer a direct probe of the physics of inflation. When we calculate statistical properties of primordial fluctuations generated during inflation, we usually assume that the initial state of quantum fluctuations is in a preferred vacuum state called Bunch-Davies vacuum. While there is some motivation for choosing such a state, this is an assumption, and thus needs to be tested by observations. In this talk I will present new probes of initial state of quantum fluctuations during inflation: the 3-point function of the cosmic microwave background anisotropy, the 2-point function of galaxies, and a spectral distortion of the thermal spectrum of the cosmic microwave background.