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Cahill And Quantum Gravity

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Posted by Richard Ruquist on February 3, 2004 12:58:23 UTC

Alex,

I have been following Cahill's work for some time because of my interest in loop quantum gravity. Below I copy over his most recent papers. In LQG he is considered a phenomenologist.

The #1 paper below is the most interesting. In it he redefines Newton's theory of gravity to include the flow of something- gravity I guess- and finds that it explains the dark matter data without needing any new matter like neutralinos or axions. The new flow term in Newton's theory contains the fine structure constant and from that fact he surmises that it is a quantum gravity effect.

-----------------

I am not particularly happy that someone is doing away with dark matter as it is the basis of my thinking on non-local consciousness and life after death. So I submitted that paper to the rather learned guys on the Physics Forum. They all considered it fringe physics, but could not determine is it was legitimate physics or not.

The link you gave me to Cahill's home page helps alot. My guess is that his reformulation of classical gravity theory is another approach to quantum gravity. At least that is what he seems to be claiming. His Cornell archive papers do not make such a claim. They are written with a minimum of extra philosoplical baggage, which is the right way to publish something so revolutionary. DrDick could learn from that, if you are familiar with his claims.

But on his academic page he lets it all hang out. My suspicion is that the term 'process physics' is just another name for quantum gravity and when it's all said and done, it will be considered a phenomenological theory of LQG. That will be a really significant contribution as it allows for experiments and observations that could verify or falsify LQG. However, it is not a separate kind of physics never done before. My prediction is that as soon as the LQG physicists like Smolin, Rovelli, Bojowald, Theiman, etc. begin to take Cahill seriously, they will derive his process flow term from LQG and subsum his whole theory.

I'll provide a few LQG links below in case you are interested in quantum gravity.

Richard




Cahill's recent papers:

1. physics/0401047 [abs, ps, pdf, other] :
Title: Gravitation, the 'Dark Matter' Effect and the Fine Structure Constant
Authors: Reginald T. Cahill (Flinders University)
Comments: 11 pages, 3 eps figures. Typos fixed
Subj-class: General Physics

2. physics/0312082 [abs, ps, pdf, other] :
Title: Quantum Foam, Gravity and Gravitational Waves
Authors: Reginald T. Cahill (Flinders University)
Comments: 60 pages, 22 eps figure files. To be published in Relativity, Gravitation, Cosmology
Subj-class: General Physics

3. physics/0309016 [abs, ps, pdf, other] :
Title: Quantum-Foam In-Flow Theory of Gravity and the Global Positioning System (GPS)
Authors: Reginald T. Cahill (Flinders University)
Comments: 25 pages, 1 eps figure
Subj-class: General Physics

4. physics/0307003 [abs, ps, pdf, other] :
Title: Gravity as Quantum Foam In-Flow
Authors: Reginald T Cahill (Flinders University)
Comments: 25 pages
Subj-class: General Physics

5. physics/0306196 [abs, ps, pdf, other] :
Title: Absolute Motion and Gravitational Effects
Authors: Reginald T Cahill
Comments: 36 pages, 17 figures
Subj-class: General Physics

6. physics/0209064 [abs, ps, pdf, other] :
Title: Synthetic Quantum Systems
Authors: Reginald T. Cahill
Comments: 16 pages, Latex, 1 eps figure file
Subj-class: General Physics
Journal-ref: Smart Mater.Struct. 11 (2002) 699-707

7. physics/0209013 [abs, ps, pdf, other] :
Title: Absolute Motion and Quantum Gravity
Authors: Reginald T. Cahill
Comments: 11 pages, Latex, 5 eps figure files Minor changes
Subj-class: General Physics

8. physics/0207010 [abs, ps, pdf, other] :
Title: Analysis of Data from a Quantum Gravity Experiment
Authors: Reginald T. Cahill
Comments: 10 pages, 4 eps figures, latex
Subj-class: General Physics




Bojowald's papers:


1. astro-ph/0309478 [abs, ps, pdf, other] :
Title: Quantum Gravity and the Big Bang
Authors: Martin Bojowald
Comments: 6 pages, invited talk at the conference "Where Cosmology and Fundamental Physics Meet" at IUFM, Marseille, June 23 - 26, 2003

2. gr-qc/0307083 [abs, ps, pdf, other] :
Title: Consistency Conditions for Fundamentally Discrete Theories
Authors: Martin Bojowald, Ghanashyam Date
Comments: 33 pages

3. gr-qc/0306008 [abs, ps, pdf, other] :
Title: Cosmological applications of loop quantum gravity
Authors: Martin Bojowald, Hugo A. Morales-Tecotl
Comments: 42 pages, 4 figures, written for the proceedings of the Fifth Mexican School (DGFM): The Early Universe and Observational Cosmology

4. gr-qc/0305069 [abs, ps, pdf, other] :
Title: Initial Conditions for a Universe
Authors: Martin Bojowald
Comments: 7 pages, this essay was awarded First Prize in the Gravity Research Foundation Essay Contest 2003

5. hep-th/0304252 [abs, ps, pdf, other] :
Title: Classical Solutions for Poisson Sigma Models on a Riemann surface
Authors: Martin Bojowald, Thomas Strobl
Comments: 28 pages
Subj-class: High Energy Physics - Theory; Symplectic Geometry
Journal-ref: JHEP 0307 (2003) 002

6. gr-qc/0304074 [abs, ps, pdf, other] :
Title: Mathematical structure of loop quantum cosmology
Authors: Abhay Ashtekar, Martin Bojowald, Jerzy Lewandowski
Comments: 29 pages, v2: minor corrections, v3: remark added in appendix
Subj-class: General Relativity and Quantum Cosmology; Mathematical Physics
Journal-ref: Adv.Theor.Math.Phys. 7 (2003) 233-268

7. gr-qc/0303073 [abs, ps, pdf, other] :
Title: Homogeneous Loop Quantum Cosmology
Authors: Martin Bojowald
Comments: 25 pages, 3 figures
Journal-ref: Class.Quant.Grav. 20 (2003) 2595-2615

8. gr-qc/0303072 [abs, ps, pdf, other] :
Title: Loop Quantum Cosmology, Boundary Proposals, and Inflation
Authors: Martin Bojowald, Kevin Vandersloot
Comments: 20 pages, 6 figures
Journal-ref: Phys.Rev. D67 (2003) 124023

9. gr-qc/0303026 [abs, ps, pdf, other] :
Title: Spin Foam Quantization and Anomalies
Authors: Martin Bojowald, Alejandro Perez
Comments: 32 pages

10. gr-qc/0207038 [abs, ps, pdf, other] :
Title: Isotropic Loop Quantum Cosmology with Matter
Authors: Martin Bojowald, Franz Hinterleitner
Comments: 18 pages, 4 figures
Journal-ref: Phys.Rev. D66 (2002) 104003

11. gr-qc/0206054 [abs, ps, pdf, other] :
Title: Inflation from Quantum Geometry
Authors: Martin Bojowald
Comments: 4 pages, 3 figures
Journal-ref: Phys.Rev.Lett. 89 (2002) 261301

12. gr-qc/0206053 [abs, ps, pdf, other] :
Title: Quantization Ambiguities in Isotropic Quantum Geometry
Authors: Martin Bojowald
Comments: 20 pages, 6 figures
Journal-ref: Class.Quant.Grav. 19 (2002) 5113-5230

13. gr-qc/0202077 [abs, ps, pdf, other] :
Title: Isotropic Loop Quantum Cosmology
Authors: Martin Bojowald
Comments: 30 pages
Journal-ref: Class.Quant.Grav. 19 (2002) 2717-2742

14. hep-th/0112074 [abs, ps, pdf, other] :
Title: Poisson Geometry in Constrained Systems
Authors: Martin Bojowald, Thomas Strobl
Comments: 41 pages, more detailed abstract in paper; v2: minor corrections and an additional reference
Subj-class: High Energy Physics - Theory; Symplectic Geometry

15. gr-qc/0105113 [abs, ps, pdf, other] :
Title: The Semiclassical Limit of Loop Quantum Cosmology
Authors: Martin Bojowald
Comments: 10 pages
Journal-ref: Class.Quant.Grav. 18 (2001) L109-L116

16. gr-qc/0105067 [abs, ps, pdf, other] :
Title: The Inverse Scale Factor in Isotropic Quantum Geometry
Authors: Martin Bojowald
Comments: 17 pages, 4 figures
Journal-ref: Phys.Rev. D64 (2001) 084018

17. gr-qc/0104072 [abs, ps, pdf, other] :
Title: Dynamical Initial Conditions in Quantum Cosmology
Authors: Martin Bojowald
Comments: 4 pages, 1 figure
Journal-ref: Phys.Rev.Lett. 87 (2001) 121301

18. gr-qc/0102069 [abs, ps, pdf, other] :
Title: Absence of Singularity in Loop Quantum Cosmology
Authors: Martin Bojowald
Comments: 4 pages, 1 figure
Journal-ref: Phys.Rev.Lett. 86 (2001) 5227-5230

19. gr-qc/0101061 [abs, ps, pdf, other] :
Title: Symmetric States in Quantum Geometry
Authors: M. Bojowald, H. A. Kastrup
Comments: 9 pages, talk at the Ninth Marcel Grossmann Meeting, Rome, July 2-8, 2000
23. gr-qc/0008054 [abs, ps, pdf, other] :
Title: Angular Momentum in Loop Quantum Gravity
Authors: Martin Bojowald
Comments: 9 pages

24. gr-qc/0008053 [abs, ps, pdf, other] :
Title: Loop Quantum Cosmology IV: Discrete Time Evolution
Authors: Martin Bojowald
Comments: 21 pages
Journal-ref: Class.Quant.Grav. 18 (2001) 1071-1088

25. gr-qc/0008052 [abs, ps, pdf, other] :
Title: Loop Quantum Cosmology III: Wheeler-DeWitt Operators
Authors: Martin Bojowald
Comments: 19 pages
Journal-ref: Class.Quant.Grav. 18 (2001) 1055-1070

26. quant-ph/9912048 [abs, ps, pdf, other] :
Title: Symplectic Cuts and Projection Quantization
Authors: Martin Bojowald, Thomas Strobl
Comments: 12 pages, v2: additional examples and a new reference to related work
Subj-class: Quantum Physics; Symplectic Geometry
Journal-ref: Int.J.Mod.Phys. D12 (2003) 713-725

28. gr-qc/9910104 [abs, ps, pdf, other] :
Title: Loop Quantum Cosmology II: Volume Operators
Authors: Martin Bojowald
Comments: 21 pages
Journal-ref: Class.Quant.Grav. 17 (2000) 1509-1526

29. gr-qc/9910103 [abs, ps, pdf, other] :
Title: Loop Quantum Cosmology I: Kinematics
Authors: Martin Bojowald
Comments: 24 pages
Journal-ref: Class.Quant.Grav. 17 (2000) 1489-1508

30. hep-th/9908170 [abs, ps, pdf, other] :
Title: Abelian BF-Theory and Spherically Symmetric Electromagnetism
Authors: Martin Bojowald
Comments: 21 pages, LaTeX2e, v2: minor corrections in some formulas and a new reference
Journal-ref: J.Math.Phys. 41 (2000) 4313-4329

31. quant-ph/9908079 [abs, ps, pdf, other] :
Title: Group Theoretical Quantization and the Example of a Phase Space S^1 x R^+
Authors: Martin Bojowald, Thomas Strobl
Comments: 41 pages, LaTeX2e
Journal-ref: J.Math.Phys. 41 (2000) 2537-2567

32. hep-th/9907043 [abs, ps, pdf, other] :
Title: The Area Operator in the Spherically Symmetric Sector of Loop Quantum Gravity
Authors: M. Bojowald, H.A. Kastrup (RWTH Aachen, Germany)
Comments: 16 pages, Latex
Journal-ref: Class.Quant.Grav. 17 (2000) 3009-3043

33. hep-th/9907042 [abs, ps, pdf, other] :
Title: Quantum Symmetry Reduction for Diffeomorphism Invariant Theories of Connections
Authors: M. Bojowald, H.A. Kastrup (RWTH Aachen, Germany)
Comments: 43 pages, Latex
Journal-ref: Class.Quant.Grav. 17 (2000) 3009-3043

34. gr-qc/9906105 [abs, ps, pdf, other] :
Title: Group Theoretical Quantization of a Phase Space S^1 x R^+ and the Mass Spectrum of Schwarzschild Black Holes in D Space-Time Dimensions
Authors: M. Bojowald, H.A. Kastrup, F. Schramm, T. Strobl (RWTH Aachen, Germany)
Comments: 45 pages, Latex; version accepted for publication in Phys. Rev. D (Refs. added, small changes in the introduction, no changes of results)
Journal-ref: Phys.Rev. D62 (2000) 044026



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