8 problems

The role of clock reversal symmetry in Wheeler–DeWitt boundary conditions
arXiv@arxiv
A theory with a quadratic Hamiltonian constraint has a two-sheet structure, and the clock reversal transformation is the symmetry associated with passage from one sheet to the othe…
Conjectureopenquantum-cosmology quantum-gravity
1
The minisuperspace generalization conjecture for tunnelling from nothing
arXiv@arxiv
In the Hamiltonian approach, the Wheeler–DeWitt equation is solved in a minisuperspace approximation, and transition probabilities between vacuum configurations can be computed usi…
Conjectureopenminisuperspace quantum-cosmology quantum-tunnelling
0
The analytic-continuation limitation conjecture for Euclidean vacuum transitions
arXiv@arxiv
Euclidean vacuum transitions are studied by analytically continuing between Euclidean and Lorentzian descriptions, while Hamiltonian approaches can describe transitions between clo…
Conjectureopenquantum-cosmology quantum-gravity vacuum-transitions
0
The $|\psi|^2$ interpretation conjecture for Taub quantum cosmologies
arXiv@arxiv
In the Taub quantum cosmology under consideration, fix $\alpha$ and consider a wave function $\psi$ whose squared modulus does not grow without bound as $\beta_+\to\pm\infty$ . Each…
Conjectureopenquantum-cosmology taub-models wheeler-dewitt-equation
0
The wave-function amplitude conjecture for Bianchi IX geometries
arXiv@arxiv
In Bianchi IX quantum cosmology, let $\alpha$ , $\beta_+$ , and $\beta_-$ be the Misner variables, with $\alpha$ fixed, and let $\psi$ be a Wheeler–DeWitt wave function. At each poin…
Conjectureopenbianchi-ix quantum-cosmology wheeler-dewitt-equation
0
Discrete-spectrum conjecture for the anisotropic quantum Mixmaster Hamiltonian
arXiv@arxiv
Let $q$ be the parameter of the anisotropic Hamiltonian operator $\widehat{\mathrm{C}}_{ani}(q)$ , whose asymptotic Hamiltonians as $q\to0$ and $q\to\infty$ have discrete spectra. D…
Conjectureopenmixmaster-universe quantum-cosmology spectral-theory
0
Darwin-like evolution and physics-structure jumps across successive Big Bangs
arXiv@arxiv
Consider cosmological scenarios involving successive Big Bangs, including the alternatives of “nothing before Big Bang” and cyclic repetition of Big Bangs. The Darwin-like evolutio…
Conjectureopencosmology quantum-cosmology quantum-phase-transitions
0
The conjecture that the Universe changes dimension at the Big Bang or Big Crunch
arXiv@arxiv
The toy model has a finite-dimensional observable Hilbert space with a time-dependent physical inner product, and it allows the observable Universe to exist before the Big Bang and…
Conjectureopenquantum-cosmology quantum-gravity
0