We construct a Type II_{∞}von Neumann algebra that describes the large
This content will become publicly available on March 1, 2025
We propose an algebra of operators along an observer’s worldline as a backgroundindependent algebra in quantum gravity. In that context, it is natural to think of the HartleHawking no boundary state as a universal state of maximum entropy, and to define entropy in terms of the relative entropy with this state. In the case that the only spacetimes considered correspond to de Sitter vacua with different values of the cosmological constant, this definition leads to sensible results.
more » « less Award ID(s):
 2207584
 NSFPAR ID:
 10505046
 Publisher / Repository:
 https://inspirehep.net/
 Date Published:
 Journal Name:
 Journal of High Energy Physics
 Volume:
 2024
 Issue:
 3
 ISSN:
 10298479
 Format(s):
 Medium: X
 Sponsoring Org:
 National Science Foundation
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