Equivalence of the chern-simons state and the Hartle-Hawking and Vilenkin wave functions
File(s)KodHHVsub2.pdf (376.18 KB)
Accepted version
Author(s)
Magueijo, Joao
Type
Journal Article
Abstract
We show that the Chern-Simons (CS) state when reduced to minisuperspace is the Fourier dual of the Hartle-Hawking (HH) and Vilenkin (V) wave functions of the Universe. This is to be expected, given that the former and latter solve the same constraint equation, written in terms of conjugate variables (loosely, the expansion factor and the Hubble parameter). A number of subtleties in the mapping, related to the contour of integration of the connection, shed light on the issue of boundary conditions in quantum cosmology. If we insist on a real Hubble parameter, then only the HH wave function can be represented by the CS state, with the Hubble parameter covering the whole real line. For the V (or tunneling) wave function, the Hubble parameter is restricted to the positive real line (which makes sense, since the state only admits outgoing waves), but the contour also covers the whole negative imaginary axis. Hence, the state is not admissible if reality conditions are imposed upon the connection. Modifications of the V state, requiring the addition of source terms to the Hamiltonian constraint, are examined and found to be more palatable. In the dual picture, the HH state predicts a uniform distribution for the Hubble parameter over the whole real line; the modified V state a uniform distribution over the positive real line.
Date Issued
2020-08-20
Date Acceptance
2020-08-01
Citation
PHYSICAL REVIEW D, 2020, 102 (4), pp.044034 – 1-044034 – 7
ISSN
1550-7998
Publisher
AMER PHYSICAL SOC
Start Page
044034 – 1
End Page
044034 – 7
Journal / Book Title
PHYSICAL REVIEW D
Volume
102
Issue
4
Copyright Statement
© 2020 American Physical Society
Sponsor
Science and Technology Facilities Council (STFC)
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000560965000004&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Grant Number
ST/P000762/1
Subjects
Science & Technology
Physical Sciences
Astronomy & Astrophysics
Physics, Particles & Fields
Physics
Publication Status
Published
Article Number
ARTN 044034
Date Publish Online
2020-08-20