PIRSA:19110108

Video URL

https://pirsa.org/19110108

Semiclassical Einstein equations in cosmological spacetimes

Pinamonti, N. (2019). Semiclassical Einstein equations in cosmological spacetimes . Perimeter Institute for Theoretical Physics. https://pirsa.org/19110108

Pinamonti, Nicola. Semiclassical Einstein equations in cosmological spacetimes . Perimeter Institute for Theoretical Physics, Nov. 21, 2019, https://pirsa.org/19110108 

          @misc{ scivideos_PIRSA:19110108,
            doi = {10.48660/19110108},
            url = {https://pirsa.org/19110108},
            author = {Pinamonti, Nicola},
            keywords = {Cosmology, Quantum Fields and Strings, Quantum Gravity},
            language = {en},
            title = {Semiclassical Einstein equations in cosmological spacetimes },
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2019},
            month = {nov},
            note = {PIRSA:19110108 see, \url{https://scivideos.org/index.php/pirsa/19110108}}
          }

Nicola Pinamonti Università degli Studi di Genova (UniGe)

Talk numberPIRSA:19110108
DOI10.48660/19110108
Source RepositoryPIRSA
Collection
Talk Type Conference
Subject

Abstract

During this talk we shall discuss the backreaction of quantum matter fields on classical backgrounds by means of the semiclassical Einstein equation. We shall see that self consistent solutions of this coupled system exist in the case of cosmological spacetimes. Furthermore, Einstein equations governing the backreaction will transfer quantum matter fluctuations to the metric. In particular, we will see how the singular structure of quantum matter will affect the spectrum of metric perturbations