A background-independent algebra in quantum gravity
Aug 7, 2023Citations per year
Abstract: (Springer)
We propose an algebra of operators along an observer’s worldline as a background-independent algebra in quantum gravity. In that context, it is natural to think of the Hartle-Hawking 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.Note:
- 37 pp, various small improvements and added references in verstions. 2,3
- Cosmological models
- de Sitter space
- operator: algebra
- vacuum state: de Sitter
- entropy
- quantum gravity
- cosmological constant
- space-time
- background
References(52)
Figures(2)
- [5]
- [6]
- [13]
- [15]
- [17]
- [18]
- [20]
- [21]
- [22]
- [25]