viernes, 20 de noviembre de 2015

Cubo de las Teorias Físicas (cGh Physics)





https://en.wikipedia.org/wiki/CGh_physics

cGh physics

cGh physics refers to the mainstream attempts in physics to unify relativity, gravitation and quantum mechanics, in particular following the ideas of Matvei Petrovich Bronstein and George Gamow. The letters are the standard symbols for the speed of light (c), the gravitational constant (G), and Planck's constant (h).
If one considers these three universal constants as the basis for a 3-D coordinate system and one envisions a cube, then this pedagogical construction provides a framework referred to as the "cGh cube" or "physics cube". This cube can used for organizing major subjects within physics as occupying each of the eight corners.
The eight corners of the cGh physics cube are:
 Other cGh subjects include Planck units, Hawking radiation and black hole thermodynamics.While there are several other physical constants, these three are given special consideration, because they can be used to define all Planck units and thus all physical quantities. The three constants are therefore used sometimes as a framework for philosophical study and as one of pedagogical patterns.

 
Diagram showing where quantum gravity sits in the a near-cube hierarchy of physics theories. Note that electromagnetism and quantum field theory in curved spacetime are added in as an extra and distinct items.

In popular culture



Matvei Petrovich Bronstein - Wikipedia, the free encyclopedia

Matvei Petrovich Bronstein (Russian: Матвей Петрович Бронштейн, December 2 [O.S. November 19] 1906, Vinnytsia — February 18, 1938) was a Soviet theoretical physicist, a pioneer of quantum gravity, author of works in astrophysics, semiconductors, quantum electrodynamics and cosmology, as well as of a number of books in popular science for children.
He introduced the cGh scheme for classifying physical theories. "After the relativistic quantum theory is created, the task will be to develop the next part of our scheme, that is to unify quantum theory (with its constant h), special relativity (with constant c), and the theory of gravitation (with its G) into a single theory."



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The Physics Cube, C.J. Wainwright
Maths and Physics > The Physics Cube
The universe is goverened by three fundamental constants: The speed of light, c, Planck's constant, h, and Newton's gravitational constant, G. Advances in theoretical physics can be seen as a journey around a cube representing which of these constants we choose to include in our theories and which we choose to ignore. The ultimate goal is to include all three constants consistently in a theory of quantum gravity. 



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  Duff, Michael; Lev B. Okun; Gabriele Veneziano (2002). "Trialogue on the number of fundamental constants". Journal of High Energy Physics (3). arXiv:physics/0110060. Bibcode:2002JHEP...03..023D. doi:10.1088/1126-6708/2002/03/023.

 Trialogue on the number of fundamental constants

This paper consists of three separate articles on the number of fundamental dimensionful constants in physics. We started our debate in summer 1992 on the terrace of the famous CERN cafeteria. In the summer of 2001 we returned to the subject to find that our views still diverged and decided to explain our current positions. LBO develops the traditional approach with three constants, GV argues in favor of at most two (within superstring theory), while MJD advocates zero.
Comments: Version appearing in JHEP; 31 pages latex
Subjects: Classical Physics (physics.class-ph); High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th); General Physics (physics.gen-ph)
Journal reference: JHEP 0203 (2002) 023
DOI: 10.1088/1126-6708/2002/03/023
Report number: MCTP-01-45, CERN-TH/2001-277
Cite as: arXiv:physics/0110060 [physics.class-ph]
(or arXiv:physics/0110060v3 [physics.class-ph] for this version)
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 Okun, Lev (1991-01-01). "The fundamental constants of physics". Soviet Physics Uspekhi (Sov. Phys. Usp.) 34 (9): 818–826. Bibcode:1991SvPhU..34..818O. doi:10.1070/PU1991v034n09ABEH002475. PACS 06.20.Jr.


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 http://xxx.lanl.gov/abs/hep-ph/0112339
Max Planck introduced four natural units: h, c, G, k. Only the first three of them retained their status, representing the so called cube of theories, after the theory of relativity and quantum mechanics were created and became the pillars of physics. This short note is a little pebble on the tombstone of Michael Samuilovich Marinov.
Comments: 7 pages, to be published in ``Multiple facets of quantization and supersymmetry'', Michael Marinov Memorial Volume, Eds. M. Olshanetsky and A. Vainshtein, World Scientific, 2002
Subjects: High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:hep-ph/0112339
(or arXiv:hep-ph/0112339v1 for this version)
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