Wave Functional of the Universe and Time
- URL: http://arxiv.org/abs/2110.09135v1
- Date: Mon, 18 Oct 2021 09:41:59 GMT
- Title: Wave Functional of the Universe and Time
- Authors: Natalia Gorobey, Alexander Lukyanenko, and A. V. Goltsev
- Abstract summary: A version of the quantum theory of gravity based on the concept of the wave functional of the universe is proposed.
The history of the evolution of the universe is described in terms of coordinate time together with arbitrary lapse and shift functions.
- Score: 62.997667081978825
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: A version of the quantum theory of gravity based on the concept of the wave
functional of the universe is proposed. To determine the physical wave
functional, the quantum principle of least action is formulated as a secular
equation for the corresponding action operator. Its solution, the wave
functional, is an invariant of general covariant transformations of space-time.
In the new formulation, the history of the evolution of the universe is
described in terms of coordinate time together with arbitrary lapse and shift
functions, which makes this description close to the formulation of the
principle of general covariance in the classical theory of Einstein's gravity.
In the new formulation of the quantum theory, an invariant parameter of the
evolutionary time of the universe is defined, which is a generalization of the
classical geodesic time, measured by a standard clock along time-like
geodesics.
Related papers
- Quantum Isotropic Universe in RQM Analogy: the Cosmological Horizon [0.0]
We investigate the quantum dynamics of the isotropic Universe in the presence of a free massless scalar field.
We show how the introduction of a "turning point" in the Universe evolution allows to overcome an intrinsic ambiguity in representing the expanding and collapsing Universe.
arXiv Detail & Related papers (2024-04-10T14:45:56Z) - Spontaneous collapse models lead to the emergence of classicality of the
Universe [0.0]
We show how models of spontaneous collapse of the wavefunction can offer a viable mechanism for explaining such an emergence.
We show that, by starting from a general quantum superposition of different geometries, the collapse dynamics leads to a single geometry.
Our formalism can be easily applied to other quantum cosmological models where we can choose a well-defined clock variable.
arXiv Detail & Related papers (2024-01-16T10:46:29Z) - General covariance for quantum states over time [0.0]
We show that a canonical state over time satisfies a notion of general covariance for the theory of quantum states over time.
We also show that the dynamical quantum Bayes' rule transforms covariantly with respect to states over time.
arXiv Detail & Related papers (2023-10-31T21:37:54Z) - Does the Universe have its own mass? [62.997667081978825]
The mass of the universe is a distribution of non-zero values of gravitational constraints.
A formulation of the Euclidean quantum theory of gravity is also proposed to determine the initial state.
Being unrelated to ordinary matter, the distribution of its own mass affects the geometry of space.
arXiv Detail & Related papers (2022-12-23T22:01:32Z) - On the Birth of the Universe and Time [62.997667081978825]
Theory is based on a quantum representation in which the action functional is implemented as an operator on the space of wave functionals.
An estimate of the initial radius of the universe is proposed.
arXiv Detail & Related papers (2022-03-24T11:09:59Z) - Entanglement dynamics of spins using a few complex trajectories [77.34726150561087]
We consider two spins initially prepared in a product of coherent states and study their entanglement dynamics.
We adopt an approach that allowed the derivation of a semiclassical formula for the linear entropy of the reduced density operator.
arXiv Detail & Related papers (2021-08-13T01:44:24Z) - Time and Evolution in Quantum and Classical Cosmology [68.8204255655161]
We show that it is neither necessary nor sufficient for the Poisson bracket between the time variable and the super-Hamiltonian to be equal to unity in all of the phase space.
We also discuss the question of switching between different internal times as well as the Montevideo interpretation of quantum theory.
arXiv Detail & Related papers (2021-07-02T09:17:55Z) - Spacetime Quantum Actions [0.0]
We propose a formulation of quantum mechanics in an extended Fock space in which a tensor product structure is applied to time.
Subspaces of histories consistent with the dynamics of a particular theory are defined by a direct quantum generalization of the corresponding classical action.
The diagonalization of such quantum actions enables us to recover the predictions of conventional quantum mechanics and reveals an extended unitary equivalence between all physical theories.
arXiv Detail & Related papers (2020-10-18T23:14:10Z) - There is only one time [110.83289076967895]
We draw a picture of physical systems that allows us to recognize what is this thing called "time"
We derive the Schr"odinger equation in the first case, and the Hamilton equations of motion in the second one.
arXiv Detail & Related papers (2020-06-22T09:54:46Z) - Quaternionic quantum theory admits universal dynamics only for two-level
systems [0.0]
We prove that quaternionic quantum theory admits a time evolution only for systems with a quaternionic dimension of at most two.
Applying the same strategy to standard complex quantum theory, we reproduce that the correspondence dictated by the Schr"odinger equation is the only possible choice.
arXiv Detail & Related papers (2020-01-15T18:50:57Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.