Final States in Quantum Cosmology: Cosmic Acceleration as a Quantum
Post-Selection Effect
- URL: http://arxiv.org/abs/2401.07662v1
- Date: Mon, 15 Jan 2024 13:05:28 GMT
- Title: Final States in Quantum Cosmology: Cosmic Acceleration as a Quantum
Post-Selection Effect
- Authors: Charis Anastopoulos
- Abstract summary: We argue that there is no compelling physical reason to preclude a probability assignment with a final quantum state at the cosmological level.
We show that the effective deterministic equations that arise at the classical limit may be very different from the solutions to the classical equations of motion.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Standard quantum theory admits naturally statistical ensembles that are both
pre-selected and post-selected, i.e., they involve both an initial and a final
state. We argue that there is no compelling physical reason to preclude a
probability assignment with a final quantum state at the cosmological level. We
therefore analyze the implications of a final state in the probability
assignment for quantum cosmology. We show that the effective deterministic
equations that arise at the classical limit may be very different from the
solutions to the classical equations of motion. In particular, effective
equations for a Friedman-Robertson-Walker cosmology with both initial and final
conditions generically describe cosmic acceleration in the absence of a
cosmological constant, dark energy, or modified gravitational dynamics.
Therefore, cosmic acceleration emerges as a quantum post-selection effect.
Related papers
- A Theory of Quantum Jumps [44.99833362998488]
We study fluorescence and the phenomenon of quantum jumps'' in idealized models of atoms coupled to the quantized electromagnetic field.
Our results amount to a derivation of the fundamental randomness in the quantum-mechanical description of microscopic systems.
arXiv Detail & Related papers (2024-04-16T11:00:46Z) - Quantum Universe and its Elusive Classicality [0.0]
Article explores challenges presented by revelations in physics and the questions they provoke concerning reality.
It sheds light on the disparity between the indefinite nature of quantum reality and our perception of classical reality.
arXiv Detail & Related papers (2024-01-29T23:01:29Z) - 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) - Matrix Multiplicative Weights Updates in Quantum Zero-Sum Games:
Conservation Laws & Recurrence [39.379577980832835]
We focus on learning in quantum zero-sum games under Matrix Multiplicative Weights Update and its continuous analogue, Quantum Replicator Dynamics.
Our analysis generalizes previous results in the case of classical games.
arXiv Detail & Related papers (2022-11-03T09:52:33Z) - Schr\"odinger cat states of a 16-microgram mechanical oscillator [54.35850218188371]
The superposition principle is one of the most fundamental principles of quantum mechanics.
Here we demonstrate the preparation of a mechanical resonator with an effective mass of 16.2 micrograms in Schr"odinger cat states of motion.
We show control over the size and phase of the superposition and investigate the decoherence dynamics of these states.
arXiv Detail & Related papers (2022-11-01T13:29:44Z) - 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) - The de Broglie-Bohm Quantum Theory and its Application to Quantum
Cosmology [0.0]
We review the de Broglie-Bohm quantum theory.
It is an alternative description of quantum phenomena in accordance with all the quantum experiments already performed.
arXiv Detail & Related papers (2021-11-04T17:59:20Z) - The quantum condition space [0.0]
We introduce the concept of the condition space, which is found to be the dual space of the classical outcome space of bit strings.
The quantum condition space permits the existence of entangled conditions that have no classical equivalent.
The relation between the condition space and quantum circuits provides insights into how quantum states are collectively modified by quantum gates.
arXiv Detail & Related papers (2021-07-12T20:11:51Z) - Classical Physics and Hamiltonian Quantum Mechanics as Relics of the Big
Bang [0.0]
We discuss the origin of the "quasiclassical realm" of familiar experience and Hamiltonian quantum mechanics.
It is argued that these features of the universe are not general properties of quantum theory, but rather approximate features that are emergent after the Planck time.
arXiv Detail & Related papers (2021-03-15T17:42:46Z) - The Time-Evolution of States in Quantum Mechanics [77.34726150561087]
It is argued that the Schr"odinger equation does not yield a correct description of the quantum-mechanical time evolution of states of isolated (open) systems featuring events.
A precise general law for the time evolution of states replacing the Schr"odinger equation is formulated within the so-called ETH-Approach to Quantum Mechanics.
arXiv Detail & Related papers (2021-01-04T16:09:10Z) - 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)
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.