scholarly journals The Quantum Chromodynamic Black Body Radiation and the Universe

1980 ◽  
Vol 63 (1) ◽  
pp. 146-159 ◽  
Author(s):  
M. Kiguchi
Keyword(s):  
Black Body ◽  
Black Body Radiation ◽  
The Universe

scholarly journals The X-Ray Background in Isotropic World Models

1969 ◽  
Vol 22 (4) ◽  
pp. 521 ◽  
Author(s):  
AD Payne
Keyword(s):  
Characteristic Time ◽  
Cosmic Ray ◽  
Black Body ◽  
Black Body Radiation ◽  
Fast Electrons ◽  
X Ray ◽  
Intergalactic Space ◽  
Source Spectra ◽  
X Ray Background ◽  
The Universe

This paper is an attempt to describe the diffuse X-ray background in terms of Compton radiation from cosmic ray electrons in intergalactic space. Similarities between the X-ray and radio source spectra suggest that fast electrons escape more or less freely from radio galaxies. It is assumed that the time scale of electron injection is small compared with the characteristic time of evolution of the universe. The electrons are considered to lose energy through Compton scattering (due to the presence of the universal black-body radiation at 3�K) and by expansion of the coordinate system.

scholarly journals The Neutrino Mass and the Cellular Large Scale Structure of the Universe

1987 ◽  
Vol 124 ◽  
pp. 719-722
Author(s):  
R. Ruffini ◽  
D.J. Song ◽  
S. Taraglio
Keyword(s):  
Cellular Structure ◽  
Large Scale ◽  
Mass Density ◽  
Angular Size ◽  
Black Body ◽  
Black Body Radiation ◽  
Average Mass ◽  
Chemical Potentials ◽  
The Masses ◽  
The Universe

We show how within the theoretical framework of a Gamow cosmology with massive neutrinos, the observed correlation functions between galaxies and between clusters of galaxies, naturally lead to a “cellular” structure of the Universe. From the size of “elementary cells” we derive constraints on the value of the masses and chemical potentials of the cosmological “inos”. We outline a procedure to estimate the “effective” average mass density of the Universe. We predict also the angular size of the inhomogeneities to be expected in the cosmological black body radiation as remnants of this cellular structure. A possible relation of our model to a fractal structure is indicated.

scholarly journals Unifi ed Quantum Gravity Th eory Driven Concepts of the Classical Laws of Physics, the Dark Energy, the General Th eory of Relativity and the ‘Zero-Energy Universe’

2020 ◽  
Vol 3 (4) ◽  
Keyword(s):  
Dark Energy ◽  
Quantum Gravity ◽  
Black Body ◽  
Black Body Radiation ◽  
Ideal Gas ◽  
Theory Of Relativity ◽  
General Theory Of Relativity ◽  
Zero Energy ◽  
The Universe ◽  
Boltzmann Law

The classical theories of physics, namely, Newton’s laws of motion, the theory of an ideal gas, the laws of thermodynamics, the Stefan-Boltzmann law, Planck hypothesis of Black Body Radiation have been revisited in the light of the newly discovered theory of quantum gravity (TQG) upon linking the mathematical logic of the said theories to the depicted geometrical profi les of the physical variables of the universe of the TQG. The geometrical profi le of the interrelation between the cosmological constant of the general theory of relativity and the dark energy of the universe has been presented. The existing concept of ‘zero-energy’ universe is being derived straight forward from the TQG. All the above said laws in science have been redefi ned and have been given new shapes altogether in this article.

The Physical World

2017 ◽  
Author(s):  
Nicholas Manton ◽  
Nicholas Mee
Keyword(s):  
Quantum Mechanics ◽  
Particle Physics ◽  
Variational Principles ◽  
Black Body ◽  
Black Body Radiation ◽  
Physical World ◽  
Atomic Scale ◽  
Solid State Physics ◽  
Least Action ◽  
Dimensional Spacetime

The book is an inspirational survey of fundamental physics, emphasizing the use of variational principles. Chapter 1 presents introductory ideas, including the principle of least action, vectors and partial differentiation. Chapter 2 covers Newtonian dynamics and the motion of mutually gravitating bodies. Chapter 3 is about electromagnetic fields as described by Maxwell’s equations. Chapter 4 is about special relativity, which unifies space and time into 4-dimensional spacetime. Chapter 5 introduces the mathematics of curved space, leading to Chapter 6 covering general relativity and its remarkable consequences, such as the existence of black holes. Chapters 7 and 8 present quantum mechanics, essential for understanding atomic-scale phenomena. Chapter 9 uses quantum mechanics to explain the fundamental principles of chemistry and solid state physics. Chapter 10 is about thermodynamics, which is built around the concepts of temperature and entropy. Various applications are discussed, including the analysis of black body radiation that led to the quantum revolution. Chapter 11 surveys the atomic nucleus, its properties and applications. Chapter 12 explores particle physics, the Standard Model and the Higgs mechanism, with a short introduction to quantum field theory. Chapter 13 is about the structure and evolution of stars and brings together material from many of the earlier chapters. Chapter 14 on cosmology describes the structure and evolution of the universe as a whole. Finally, Chapter 15 discusses remaining problems at the frontiers of physics, such as the interpretation of quantum mechanics, and the ultimate nature of particles. Some speculative ideas are explored, such as supersymmetry, solitons and string theory.

Constructing Quantum Mechanics

2019 ◽  
Author(s):  
Anthony Duncan ◽  
Michel Janssen
Keyword(s):  
Quantum Mechanics ◽  
Quantum Theory ◽  
Stark Effect ◽  
Zeeman Effect ◽  
Black Body ◽  
Black Body Radiation ◽  
Wave Mechanics ◽  
Specific Heats ◽  
Old Quantum Theory ◽  
Upper Level

This is the first of two volumes on the genesis of quantum mechanics. It covers the key developments in the period 1900–1923 that provided the scaffold on which the arch of modern quantum mechanics was built in the period 1923–1927 (covered in the second volume). After tracing the early contributions by Planck, Einstein, and Bohr to the theories of black‐body radiation, specific heats, and spectroscopy, all showing the need for drastic changes to the physics of their day, the book tackles the efforts by Sommerfeld and others to provide a new theory, now known as the old quantum theory. After some striking initial successes (explaining the fine structure of hydrogen, X‐ray spectra, and the Stark effect), the old quantum theory ran into serious difficulties (failing to provide consistent models for helium and the Zeeman effect) and eventually gave way to matrix and wave mechanics. Constructing Quantum Mechanics is based on the best and latest scholarship in the field, to which the authors have made significant contributions themselves. It breaks new ground, especially in its treatment of the work of Sommerfeld and his associates, but also offers new perspectives on classic papers by Planck, Einstein, and Bohr. Throughout the book, the authors provide detailed reconstructions (at the level of an upper‐level undergraduate physics course) of the cental arguments and derivations of the physicists involved. All in all, Constructing Quantum Mechanics promises to take the place of older books as the standard source on the genesis of quantum mechanics.

Electromagnetic fluctuations from energetic particles in plasmas

1988 ◽  
Vol 40 (3) ◽  
pp. 407-417 ◽  
Author(s):  
Cheng Chu ◽  
J. L. Sperling
Keyword(s):  
Distribution Function ◽  
Velocity Distribution ◽  
Charged Particles ◽  
Velocity Distribution Function ◽  
Black Body ◽  
Black Body Radiation ◽  
Specific Model ◽  
Magnetized Plasma ◽  
Plasma Power ◽  
Correlation Techniques

Electromagnetic fluctuations, induced by energetic charged particles, are calculated using correlation techniques for a uniform magnetized plasma. Power emission in the ion-cyclotron range of frequencies (ICRF) is calculated for a specific model of velocity distribution function. The emissive spectra are distinct from that of the black-body radiation and have features that are consistent with experimental observation.

DOES LIOUVILLE'S THEOREM IMPLY QUANTUM MECHANICS?

1999 ◽  
Vol 13 (02) ◽  
pp. 161-189
Author(s):  
C. SYROS
Keyword(s):  
Quantum Mechanics ◽  
Radiation Spectrum ◽  
Black Body ◽  
Boltzmann Distribution ◽  
Black Body Radiation ◽  
Planck Constant ◽  
Klein Gordon ◽  
Energy Variable ◽  
Liouville’S Theorem ◽  
Liouville’S Equation

The essentials of quantum mechanics are derived from Liouville's theorem in statistical mechanics. An elementary solution, g, of Liouville's equation helps to construct a differentiable N-particle distribution function (DF), F(g), satisfying the same equation. Reality and additivity of F(g): (i) quantize the time variable; (ii) quantize the energy variable; (iii) quantize the Maxwell–Boltzmann distribution; (iv) make F(g) observable through time-elimination; (v) produce the Planck constant; (vi) yield the black-body radiation spectrum; (vii) support chronotopology introduced axiomatically; (viii) the Schrödinger and the Klein–Gordon equations follow. Hence, quantum theory appears as a corollary of Liouville's theorem. An unknown connection is found allowing the better understanding of space-times and of these theories.

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