The Quantum World

2015 ◽  
Vol 27 (1) ◽  
pp. 45-60
Author(s):  
A. James Melnick ◽  
Keyword(s):  
Quantum Mechanics ◽  
Cosmological Constant ◽  
Albert Einstein ◽  
Fine Tuning ◽  
Anthropic Reasoning ◽  
The Mind

Scientific measurements of fine-tuning factors, especially the cosmological constant, have forced non-theists to fall back on anthropic reasoning and multiverse theories to try to explain away the implications of a theistically-designed universe. Whatever its other uses, employing anthropic reasoning in this way is questionable. It is unscientific to posit trillions upon trillions of universes--as many multiverse proponents and string theorists do--in order to try to explain away the fine-tuned existence of our own. Albert Einstein would likely dismiss many current multiverse theories. Yet, might we still live in a multiversal reality? This essay posits such a reality--a Triverse--as a more parsimonious view over popular multiverse theories. The proposed Triverse has some similarity to, but is distinct from, Roger Penrose’s “three worlds” in his Shadows of the Mind. A multiversal Triverse reality might also eventually be reconciled with some of the evidence and indicators that support quantum mechanics, and thus help define a more deterministic universe.

scholarly journals REMARKS ON THE COSMOLOGICAL CONSTANT

2013 ◽  
Vol 28 (04) ◽  
pp. 1350001 ◽  
Author(s):  
PAUL H. FRAMPTON
Keyword(s):  
General Relativity ◽  
Quantum Mechanics ◽  
Cosmological Constant ◽  
Linear Combination ◽  
Test Particle ◽  
Energy Content ◽  
The Other ◽  
Fine Tuning

The acceleration of the surface of last scatter (SLS) must somehow reflect the energy content within it. A test particle at the SLS is assumed to experience a linear combination of two forces: one Newtonian, the other pseudo-Newtonian describable by a cosmological constant Λ in general relativity. In the Λ description, which is surely too unimaginative, the size of Λ reflects only the comparable magnitudes of the Newtonian and pseudo-Newtonian forces; any claim of fine tuning due to quantum mechanics is probably illusory.

scholarly journals Constraining the Swiss-Cheese IR-Fixed Point Cosmology with Cosmic Expansion

Universe ◽  
2021 ◽  
Vol 7 (8) ◽  
pp. 263
Author(s):  
Ayan Mitra ◽  
Vasilios Zarikas ◽  
Alfio Bonanno ◽  
Michael Good ◽  
Ertan Güdekli
Keyword(s):  
Fixed Point ◽  
Cosmological Constant ◽  
Cosmic Acceleration ◽  
Fine Tuning ◽  
Clusters Of Galaxies ◽  
Swiss Cheese ◽  
Coincidence Problem ◽  
Cosmological Expansion ◽  
Cosmic Evolution ◽  
Previous Assumption

A recent work proposed that the recent cosmic passage to a cosmic acceleration era is the result of the existence of small anti-gravity sources in each galaxy and clusters of galaxies. In particular, a Swiss-cheese cosmology model, which relativistically integrates the contribution of all these anti-gravity sources on a galactic scale has been constructed assuming the presence of an infrared fixed point for a scale dependent cosmological constant. The derived cosmological expansion provides an explanation for both the fine tuning and the coincidence problem. The present work relaxes the previous assumption on the running of the cosmological constant and allows for a generic scaling around the infrared fixed point. Our analysis reveals that, in order to produce a cosmic evolution consistent with the best ΛCDM model, the IR-running of the cosmological constant is consistent with the presence of an IR-fixed point.

The possibility of a stable flat dark energy-dominated Swiss-cheese brane-world universe

2020 ◽  
Vol 17 (05) ◽  
pp. 2050075
Author(s):  
Nasr Ahmed ◽  
Kazuharu Bamba ◽  
F. Salama
Keyword(s):  
Dark Energy ◽  
Cosmological Constant ◽  
Cosmological Models ◽  
Brane World ◽  
Fine Tuning ◽  
Energy Conditions ◽  
Late Time ◽  
Swiss Cheese ◽  
Black Strings ◽  
The Stability

In this paper, we study the possibility of obtaining a stable flat dark energy-dominated universe in a good agreement with observations in the framework of Swiss-cheese brane-world cosmology. Two different brane-world cosmologies with black strings have been introduced for any cosmological constant [Formula: see text] using two empirical forms of the scale factor. In both models, we have performed a fine-tuning between the brane tension and the cosmological constant so that the Equation of state (EoS) parameter [Formula: see text] for the current epoch, where the redshift [Formula: see text]. We then used these fine–tuned values to calculate and plot all parameters and energy conditions. The deceleration–acceleration cosmic transition is allowed in both models, and the jerk parameter [Formula: see text] at late-times. Both solutions predict a future dark energy-dominated universe in which [Formula: see text] with no crossing to the phantom divide line. While the pressure in the first solution is always negative, the second solution predicts a better behavior of cosmic pressure where the pressure is negative only in the late-time accelerating era but positive in the early-time decelerating era. Such a positive-to-negative transition in the evolution of pressure helps to explain the cosmic deceleration–acceleration transition. Since black strings have been proved to be unstable by some authors, this instability can actually reflect doubts on the stability of cosmological models with black strings (Swiss-cheese type brane-worlds cosmological models). For this reason, we have carefully investigated the stability through energy conditions and sound speed. Because of the presence of quadratic energy terms in Swiss-cheese type brane-world cosmology, we have tested the new nonlinear energy conditions in addition to the classical energy conditions. We have also found that a negative tension brane is not allowed in both models of the current work as the energy density will no longer be well defined.

scholarly journals p-ADIC AND ADELIC MINISUPERSPACE QUANTUM COSMOLOGY

2002 ◽  
Vol 17 (10) ◽  
pp. 1413-1433 ◽  
Author(s):  
GORAN S. DJORDJEVIĆ ◽  
BRANKO DRAGOVICH ◽  
LJUBIŠA D. NEŠIĆ ◽  
IGOR V. VOLOVICH
Keyword(s):  
Quantum Mechanics ◽  
Cosmological Constant ◽  
Quantum Cosmology ◽  
Quantum Effects ◽  
De Sitter Space ◽  
Cosmological Models ◽  
De Sitter ◽  
Adelic Quantum Mechanics ◽  
Matter Fields

We consider the formulation and some elaboration of p-adic and adelic quantum cosmology. The adelic generalization of the Hartle–Hawking proposal does not work in models with matter fields. p-adic and adelic minisuperspace quantum cosmology is well defined as an ordinary application of p-adic and adelic quantum mechanics. It is illustrated by a few cosmological models in one, two and three minisuperspace dimensions. As a result of p-adic quantum effects and the adelic approach, these models exhibit some discreteness of the minisuperspace and cosmological constant. In particular, discreteness of the de Sitter space and its cosmological constant is emphasized.

scholarly journals From inflation to a zero cosmological constant phase without fine-tuning

1998 ◽  
Vol 57 (12) ◽  
pp. 7200-7203 ◽  
Author(s):  
E. I. Guendelman ◽  
A. B. Kaganovich
Keyword(s):  
Cosmological Constant ◽  
Fine Tuning

Quantum Mechanics, Computers, and the Mind

2007 ◽  
pp. 103-126
Author(s):  
David H. Glass ◽  
Mark McCartney
Keyword(s):  
Quantum Mechanics ◽  
The Mind

scholarly journals The Concept of “Vocalese” in the Class of FLE

2019 ◽  
Vol 8 (6S4) ◽  
pp. 1390-1392
Keyword(s):  
Foreign Language ◽  
Albert Einstein ◽  
Creative Expression ◽  
Inductive Method ◽  
Robert Frost ◽  
Musical Genre ◽  
Claude Bernard ◽  
Deductive Method ◽  
Teaching Music ◽  
The Mind

“Music is a world within itself a language we all understand “– Steve Wonder. According to these words if this language called “Music” can be used in the teaching of a foreign language it justifies the words of Plato “Music is a more potent instrument than any other form of education because rhythm and harmony find their way into the inward places of the soul”. This article aims To highlight the advantages of “Vocalese” in the teaching of French as a foreign langue (FLE) – Francais Langue Etrangere and to structure a formative and fun FLE course through the exploitation of a song aiming at functional, linguistic and socio cultural objectives. Why use songs? Why music? Music is a therapy. It is a communication far more powerful than words, far more immediate and far more efficient” – Yehudi Menuhin. Having understood well the advantages of using songs in the teaching of FLE, let us now analyze the concept the “Vocalese”. What is Vocalese? Vocalese is a style or musical genre of jazz singing wherein words are sung note for note to melodies that were originally created by a soloist's improvisation. Why use Vocalese? Man can learn nothing except by going from the known to the unknown – Claude Bernard (French physiologist).In “Vocalese” one is familiar with the tune. When this (known) tune is combined with new lyrics (the unknown) learning is facilitated. Advantages of “Vocalese” in the concept of teaching - Vocalese uses the deductive method of teaching in lieu to the inductive method of teaching. Music is to soul what words are to mind and if these words can be altered it is nothing more than the alteration of the mind – the very first step needed in the teaching of any language. Thus the duty of every teacher is not to teach but to facilitate teaching in accordance to the words of Robert Frost “There are two kinds of teachers: the kind that fills you with so much quail shot that you can’t move and the kind that just gives you a little prod behind and you jump to the skies”. I conclude with the words of Albert Einstein “It is the supreme art of the teacher to awaken joy in creative expression and knowledge” and I as a teacher would like to awaken this joy via music and would prefer to be called an “Educational Rock Star”

Contemporary Echoes of the World Soul

2021 ◽  
pp. 320-342
Author(s):  
Valia Allori
Keyword(s):  
Quantum Mechanics ◽  
Quantum Theory ◽  
Conscious Experience ◽  
Hard Problem ◽  
Quantum Theories ◽  
The World ◽  
The Hard Problem ◽  
The Mind ◽  
The Way

Quantum mechanics is a groundbreaking theory: it not only is extraordinarily empirically adequate but also is claimed to having shattered the classical paradigm of understanding the observer-observed distinction as well as the part-whole relation. This, together with other quantum features, has been taken to suggest that quantum theory can help one understand the mind-body relation in a unique way, in particular to solve the hard problem of consciousness along the lines of panpsychism. In this chapter, after having briefly presented panpsychism, Valia Allori discusses the main features of quantum theories and the way in which the main quantum theories of consciousness use them to account for conscious experience.

Operator Control Parameters and Fine Tuning of Genetic Algorithms (GAs)

2021 ◽  
pp. 115-127
Keyword(s):  
Genetic Algorithms ◽  
Black Box ◽  
Fine Tuning ◽  
Control Parameters ◽  
Solution Quality ◽  
Internal Working ◽  
Size Number ◽  
Crossover Probability ◽  
The Mind ◽  
Operator Control

Genetic algorithms (GAs) are heuristic, blind (i.e., black box-based) search techniques. The internal working of GAs is complex and is opaque for the general practitioner. GAs are a set of interconnected procedures that consist of complex interconnected activity among parameters. When a naive GA practitioner tries to implement GA code, the first question that comes into the mind is what are the value of GA control parameters (i.e., various operators such as crossover probability, mutation probability, population size, number of generations, etc. will be set to run a GA code)? This chapter clears all the complexities about the internal interconnected working of GA control parameters. GA can have many variations in its implementation (i.e., mutation alone-based GA, crossover alone-based GA, GA with combination of mutation and crossover, etc.). In this chapter, the authors discuss how variation in GA control parameter settings affects the solution quality.

Supersymmetric quantum field theory (QFT): Introduction

2021 ◽  
pp. 656-669
Author(s):  
Jean Zinn-Justin
Keyword(s):  
Cosmological Constant ◽  
Particle Physics ◽  
Vector Fields ◽  
Hadron Collider ◽  
Large Mass ◽  
Momentum Tensor ◽  
Fine Tuning ◽  
Four Dimensions ◽  
New Feature ◽  
The Masses

Supersymmetry has been proposed, in particular as a principle to solve the so-called fine-tuning problem in particle physics by relating the masses of scalar particles (like Higgs fields) to those of fermions, which can be protected against ‘large’ mass renormalization by chiral symmetry. However, supersymmetry is, at best, an approximate symmetry broken at a scale beyond the reach of a large hadron collider (LHC), because the possible supersymmetric partners of known particles have not been discovered yet (2020) and thus, if they exist, must be much heavier. Exact supersymmetry would also have implied the vanishing of the vacuum energy and thus, of the cosmological constant. The discovery of dark energy has a natural interpretation as resulting from a very small cosmological constant. However, a naive model based on broken supersymmetry would still predict 60 orders of magnitude too large a value compared to 120 orders of magnitude otherwise. Gauging supersymmetry leads naturally to a unification with gravity, because the commutators of supersymmetry currents involve the energy momentum tensor. First, examples of supersymmetric theories involving scalar superfields, simple generalizations of supersymmetric quantum mechanics (QM) are described. The new feature of supersymmetry in higher dimensions is the combination of supersymmetry with spin, since fermions have spins. In four dimensions, theories with chiral scalar fields and vector fields are constructed.

Sign in / Sign up

Export Citation Format

Share Document