Quantum mechanics in the Universe

2007 ◽  
pp. 263-301
Keyword(s):  
Quantum Mechanics ◽  
The Universe

scholarly journals IMPLICATIONS OF A QUANTUM MECHANICAL TREATMENT OF THE UNIVERSE

1998 ◽  
Vol 13 (05) ◽  
pp. 347-351 ◽  
Author(s):  
MURAT ÖZER
Keyword(s):  
Quantum Mechanics ◽  
Wave Packet ◽  
Early Universe ◽  
Mechanical Treatment ◽  
Correspondence Principle ◽  
Scale Factor ◽  
Quantum Mechanical ◽  
Quantum Mechanical Treatment ◽  
The Standard Model ◽  
The Universe

We attempt to treat the very early Universe according to quantum mechanics. Identifying the scale factor of the Universe with the width of the wave packet associated with it, we show that there cannot be an initial singularity and that the Universe expands. Invoking the correspondence principle, we obtain the scale factor of the Universe and demonstrate that the causality problem of the standard model is solved.

scholarly journals From the Universe to Subsystems: Why Quantum Mechanics Appears More Stochastic than Classical Mechanics

2016 ◽  
Vol 15 (03) ◽  
pp. 1640002 ◽  
Author(s):  
Andrea Oldofredi ◽  
Dustin Lazarovici ◽  
Dirk-André Deckert ◽  
Michael Esfeld
Keyword(s):  
Quantum Mechanics ◽  
Classical Mechanics ◽  
Bohmian Quantum Mechanics ◽  
The Universe

By means of the examples of classical and Bohmian quantum mechanics, we illustrate the well-known ideas of Boltzmann as to how one gets from laws defined for the universe as a whole the dynamical relations describing the evolution of subsystems. We explain how probabilities enter into this process, what quantum and classical probabilities have in common and where exactly their difference lies.

scholarly journals Gravity as entanglement, entanglement as gravity

2020 ◽  
Author(s):  
Vasil Dinev Penchev
Keyword(s):  
General Relativity ◽  
Quantum Mechanics ◽  
Reference Frame ◽  
Common Sense ◽  
Reference Frames ◽  
General Covariance ◽  
The Universe

A generalized and unifying viewpoint to both general relativity and quantum mechanics and information is investigated. It may be described as a generaliztion of the concept of reference frame from mechanics to thermodynamics, or from a reference frame linked to an element of a system, and thus, within it, to another reference frame linked to the whole of the system or to any of other similar systems, and thus, out of it. Furthermore, the former is the viewpoint of general relativity, the latter is that of quantum mechanics and information.Ciclicity in the manner of Nicolas Cusanus (Nicolas of Cusa) is complemented as a fundamental and definitive property of any totality, e.g. physically, that of the universe. It has to contain its externality within it somehow being namely the totality. This implies a seemingly paradoxical (in fact, only to common sense rather logically and mathematically) viewpoint for the universe to be repesented within it as each one quant of action according to the fundamental Planck constant.That approach implies the unification of gravity and entanglement correspondiing to the former or latter class of reference frames. An invariance, more general than Einstein's general covariance is to be involved as to both classes of reference frames unifying them. Its essence is the unification of the discrete and cotnitinuous (smooth). That idea underlies implicitly quantum mechanics for Bohr's principle that it study the system of quantum microscopic entities and the macroscopic apparatus desribed uniformly by the smmoth equations of classical physics.e

Quantenmechanik und Objektivierbarkeit/ Quantum Mechanics and Objective Reality

1970 ◽  
Vol 25 (12) ◽  
pp. 1954-1957 ◽  
Author(s):  
K. Baumann
Keyword(s):  
Quantum Mechanics ◽  
Density Matrix ◽  
State Vector ◽  
The State ◽  
Measuring Apparatus ◽  
Measuring Process ◽  
Objective Reality ◽  
Objective Description ◽  
The Universe

Abstract Quantum Mechanics and Objective Reality A Schrödinger function (or a density matrix) can he ascribed only to an object whose isolation time is larger than its time of revolution. This condition can never be satisfied for macroscopic bodies. Consequently, the "cut" between object and observer must not separate a macroscopic body (measuring apparatus) from the rest of the universe. Hence in an analysis of the measuring process, the state vector of the universe must be introduced. An interpretation of this state vector is given which provides an objective description of nature.

Are Galaxies and Elementary Particles Real? Objects, Reality, Space and Time. An ISST Forum

KronoScope ◽  
2009 ◽  
Vol 9 (1-2) ◽  
pp. 91-107
Author(s):  
Rémy Lestienne
Keyword(s):  
Quantum Mechanics ◽  
Present Article ◽  
International Society ◽  
Physical Theory ◽  
Niels Bohr ◽  
Large Structures ◽  
Real Objects ◽  
Microscopic World ◽  
The Universe ◽  
The Web

AbstractWhat is an object? What conditions declare it to be “real”? When can a concept, that has been proposed in a physical theory to describe our observations, be declared “physical” or, in other words, to be an element of reality? These questions pertain to the old debate between idealism and realism. In the last decades, the discussion was principally fuelled by the development of Quantum Mechanics, and particularly by the study of the process of measurement and the development of the concept of complementarity by Niels Bohr and the School of Copenhagen. In a few pages taken from The View from the Center of the Universe, Joel Primack and Nancy Abrams propose to limit the use of the concept of existence not only toward the microscopic world but also toward the very large structures of the Universe. This moves us to reopen the Pandora's Box, in a way in which the consideration of Time may play a fundamental role, as Whitehead, for example, insisted on. However, the interrogation seems to drift necessarily towards a reflection onto the concept of emergence and its relation with time. The present article is the end product of a three month's long Forum opened in February 2008 by the initiator among members of the International Society for the Study of Time, onto the “Gnomon” zone of the web site of the Association. Contributions from Nancy Abrams, Mark Aultman, Troy Camplin, Julius T. Fraser, Paul Harris, Marcel Le Bel, Jean Lette, Carlos Montemayor, Giovanni Vicario and Amrit Srecko Sorli were particularly beneficial to the discussion.

scholarly journals Ensembles and Experiments in Classical and Quantum Physics

2003 ◽  
Vol 17 (16) ◽  
pp. 2937-2980
Author(s):  
Arnold Neumaier
Keyword(s):  
Quantum Mechanics ◽  
Quantum Physics ◽  
Law Of Large Numbers ◽  
Correspondence Principle ◽  
Axiomatic Approach ◽  
Mathematical Concepts ◽  
Large Numbers ◽  
The Universe ◽  
Classical And Quantum Mechanics ◽  
Elegant Solution

A philosophically consistent axiomatic approach to classical and quantum mechanics is given. The approach realizes a strong formal implementation of Bohr's correspondence principle. In all instances, classical and quantum concepts are fully parallel: the same general theory has a classical realization and a quantum realization. Extending the ''probability via expectation'' approach of Whittle to noncommuting quantities, this paper defines quantities, ensembles, and experiments as mathematical concepts and shows how to model complementarity, uncertainty, probability, nonlocality and dynamics in these terms. The approach carries no connotation of unlimited repeatability; hence it can be applied to unique systems such as the universe. Consistent experiments provide an elegant solution to the reality problem, confirming the insistence of the orthodox Copenhagen interpretation on that there is nothing but ensembles, while avoiding its elusive reality picture. The weak law of large numbers explains the emergence of classical properties for macroscopic systems.

QUANTUM MECHANICS FROM A FLUCTUATION IN THE COSMOS

2001 ◽  
Vol 16 (17) ◽  
pp. 2965-2973 ◽  
Author(s):  
MAKOTO INABA
Keyword(s):  
General Relativity ◽  
Quantum Mechanics ◽  
Scalar Curvature ◽  
Mass Distribution ◽  
Coarse Graining ◽  
Present Theory ◽  
Random Motion ◽  
Least Action Principle ◽  
Least Action ◽  
The Universe

There is an indeterminable part from only the mass distribution in the general relativity. The part is regarded as a fluctuation from the Robertson–Walker geometry. An ensemble is given by a coarse graining of the fluctuation. The averaged least-action principle with respect to the ensemble yields a random motion of a particle in the universe. The random motion is equivalent to the traditional quantum mechanics. There is an additional potential proportional to scalar curvature in the present theory. The potential may be a representation of Mach's principle.

INTERPRETATION AND PREDICTABILITY OF QUANTUM MECHANICS AND QUANTUM COSMOLOGY

1988 ◽  
Vol 03 (07) ◽  
pp. 645-651 ◽  
Author(s):  
SUMIO WADA
Keyword(s):  
Wave Function ◽  
Quantum Mechanics ◽  
Quantum Theory ◽  
Physical Meaning ◽  
Quantum Cosmology ◽  
Degrees Of Freedom ◽  
Interpretation Of Quantum Mechanics ◽  
Probabilistic Interpretation ◽  
The Universe ◽  
Classical Picture

A non-probabilistic interpretation of quantum mechanics asserts that we get a prediction only when a wave function has a peak. Taking this interpretation seriously, we discuss how to find a peak in the wave function of the universe, by using some minisuperspace models with homogeneous degrees of freedom and also a model with cosmological perturbations. Then we show how to recover our classical picture of the universe from the quantum theory, and comment on the physical meaning of the backreaction equation.

scholarly journals Philo-physical model for the theory of everything

2019 ◽  
Vol 3 (2) ◽  
Author(s):  
Ali Nasser Mohammed Ali
Keyword(s):  
Quantum Mechanics ◽  
Physical Model ◽  
Modern Science ◽  
Classical Physics ◽  
Missing Link ◽  
Theory Of Everything ◽  
Ancient Civilizations ◽  
New Perspective ◽  
The Universe ◽  
Origin Of The Universe

      Abstract: Ancient Egyptians and other ancient civilizations relied on a theory that binds all the components of the universe to each other. Because this approach is different from the rules of modern science, we find it difficult to explain how they founded their civilization in such a wonderful way. I have put a conception for the principles of this theory and it was able to explain all phemenona in the universe, materialistic and theological.(*) It depends on an Idea that the whole universe consists of four primary units, of which pairs are formed and the proportion of units in each pair determines their relation to each other and their relation to them in accordance with the principles of this theory It is simple in its totality to the extent that the non-specialist can understand the most complex interpretations of phenomena in simple way it remove the puzzles between philosophy and physics. It is the missing link between the oddity of quantum mechanics and classical physics. This theory will lead us to conceptualize the universe with a new perspective: that the universe is connected to all its components, so Any change at any point in the universe will change the rest of its components. This Theory can explain Phenomenon by different way; such as space-time, the origin of the universe and the interpretation of ambiguity in ancient civilizations.  

scholarly journals The Topological Universe’s Topological Materials

2021 ◽  
Author(s):  
Rodney Bartlett
Keyword(s):  
Quantum Mechanics ◽  
Steady State ◽  
Quantum Gravity ◽  
Topological Insulators ◽  
Big Bang ◽  
Rubber Sheet ◽  
Topological Materials ◽  
Topological Superconductors ◽  
Paradigm Shifting ◽  
The Universe

The part of this article dealing with topological insulators and topological superconductors was first written about two years ago - the ideas in the part about the topological universe originated six years ago or more. It’s rather strange that I never put the two parts together in writing before. My belief in unification is unshakeable - I’ve been convinced for years that the universe must be composed of topology. Since Earth is part of the cosmos, entanglement means it must have topological materials. The reverse is also true: topological materials on Earth are well known to science - so in a unification, space and time inevitably possess topological composition. Topological materials (topological insulators, topological superconductors) can be less mystifying if they’re related to the paradigm-shifting deterministic view of quantum mechanics which is described in the universal topology (the “rubber-sheet geometry” of the cosmos): see my previous submission “Hypothesis of Quantum Gravity - Resulting from a Static, Topological Universe Resulting from the Positives and Negatives of the Steady State and Big Bang Theories" at https://www.preprints.org/manuscript/202105.0239/v1 (the first section of this present article is a quick summary of the relevant parts).

Sign in / Sign up

Export Citation Format

Share Document