Related papers: Nature does not play dice at the Planck scale

Nature does not play dice at the Planck scale

URL: http://arxiv.org/abs/2005.06427v2
Date: Mon, 27 Jul 2020 07:13:34 GMT
Title: Nature does not play dice at the Planck scale
Authors: Tejinder P. Singh
Abstract summary: We start from classical general relativity coupled to matter fields. By coarse-graining this matrix dynamics over time intervals much larger than Planck time, one derives quantum theory as a low energy emergent approximation. In our theory, dark energy is shown to be a large-scale quantum gravitational phenomenon.
Score: 0.0
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: We start from classical general relativity coupled to matter fields. Each configuration variable and its conjugate momentum, as also space-time points, are raised to the status of matrices [equivalently operators]. These matrices obey a deterministic Lagrangian dynamics at the Planck scale. By coarse-graining this matrix dynamics over time intervals much larger than Planck time, one derives quantum theory as a low energy emergent approximation. If a sufficiently large number of degrees of freedom get entangled, spontaneous localisation takes place, leading to the emergence of classical space-time geometry and a classical universe. In our theory, dark energy is shown to be a large-scale quantum gravitational phenomenon. Quantum indeterminism is not fundamental, but results from our not probing physics at the Planck scale.

Related papers

Is Planckian discreteness observable in cosmology? [47.03992469282679]
A Planck scale inflationary era produces the scale invariant spectrum of inhomogeneities with very small tensor-to-scalar ratio of perturbations. Here we evoke the possibility that some of the major puzzles in cosmology would have an explanation rooted in quantum gravity.
arXiv Detail & Related papers (2024-05-21T06:53:37Z)
An algebraic approach to gravitational quantum mechanics [0.0]
We study various models of gravitational quantum mechanics. The free time evolution of a Gaussian wave packet is investigated. The spectral properties of a particle bound by an external attractive potential are considered.
arXiv Detail & Related papers (2024-02-27T15:54:18Z)
Interpretation of Quantum Theory and Cosmology [0.0]
We reconsider the problem of the interpretation of the Quantum Theory (QT) in the perspective of the entire universe. For the Universe we adopt a variance of the LambdaCDM model with Omega=1, one single inflaton with an Higgs type potential, the initial time at t=minus infinite.
arXiv Detail & Related papers (2023-04-14T12:32:30Z)
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)
Correspondence Between the Energy Equipartition Theorem in Classical Mechanics and its Phase-Space Formulation in Quantum Mechanics [62.997667081978825]
In quantum mechanics, the energy per degree of freedom is not equally distributed. We show that in the high-temperature regime, the classical result is recovered.
arXiv Detail & Related papers (2022-05-24T20:51:03Z)
Quantum dynamics corresponding to chaotic BKL scenario [62.997667081978825]
Quantization smears the gravitational singularity avoiding its localization in the configuration space. Results suggest that the generic singularity of general relativity can be avoided at quantum level.
arXiv Detail & Related papers (2022-04-24T13:32:45Z)
Bound on Quantum Fluctuations in Gravitational Waves from LIGO [0.0]
We derive some of the central equations governing quantum fluctuations in gravitational waves. We make use of general relativity as a sensible effective quantum theory at large distances.
arXiv Detail & Related papers (2021-12-22T19:00:03Z)
Is spacetime quantum? [0.0]
We show a theorem stating that spacetime degrees of freedom and a quantum system violate a Bell inequality in a background Minkowski spacetime. We argue that this implies that spacetime cannot be sensibly called classical if the assumptions in our theorem hold.
arXiv Detail & Related papers (2021-09-06T17:13:51Z)
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)
Singularity resolution depends on the clock [0.0]
We study the quantum cosmology of a flat Friedmann-Lemaitre-Robertson-Walker universe filled with a (free) massless scalar field and a perfect fluid that represents radiation or a cosmological constant whose value is not fixed by the action, as in unimodular gravity.
arXiv Detail & Related papers (2020-05-11T18:06:59Z)
Projection evolution and quantum spacetime [68.8204255655161]
We discuss the problem of time in quantum mechanics. An idea of construction of a quantum spacetime as a special set of the allowed states is presented. An example of a structureless quantum Minkowski-like spacetime is also considered.
arXiv Detail & Related papers (2019-10-24T14:54:11Z)

This list is automatically generated from the titles and abstracts of the papers in this site.