Note on loop resummation in de Sitter spacetime with the wave function of the universe approach
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DOI: 10.1103/nxjc-8qw2
Abstract: We analyze the computation of n-point correlation functions in de Sitter spacetime, including loop corrections, using the wave function of the universe approach. This method consists of two stages employing distinct Feynman rules. First, one… read more here.
Keywords: function universe; universe approach; function; sitter spacetime ... See more keywords
What is the no-boundary wave function of the Universe?
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DOI: 10.1103/physrevd.99.043526
Abstract: We specify the semiclassical no-boundary wave function of the universe without relying on a functional integral of any kind. The wave function is given as a sum of specific saddle points of the dynamical theory… read more here.
Keywords: function universe; wave function; geometry; boundary wave ... See more keywords
Tunneling wave function of the universe. II. The backreaction problem
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DOI: 10.1103/physrevd.99.066010
Abstract: The tunneling wave function of the universe is calculated exactly for a de Sitter minisuperspace model with a massless conformally coupled scalar field, both by solving the Wheeler-DeWitt equation and by evaluating the Lorentzian path… read more here.
Keywords: field; function universe; wave function; tunneling wave ... See more keywords
On the meaning of the wave function of the Universe
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DOI: 10.1142/s0218271819410098
Abstract: The meaning of the wave function of the Universe was actively discussed in 1980s. In most works on quantum cosmology, it is accepted that the wave function is a probability amplitude for the Universe to… read more here.
Keywords: function; wave function; function universe; meaning wave ... See more keywords