neděle 16. listopadu 2008

How ancient physics was reborn

Main purpose of this post is just to track rather fast re-introduction of ancient Aether model (possibly under influence of AWT concepts) into mainstream science again by using of online available sources. Therefore only links to other articles with minimal comments will be presented here and the list will be extended gradually regarding to public proposals:
  1. Principia Discordia (1958)
    Discordianism is based on pantheistic idea, that chaos is all that there is, and that order and disorder are both illusions (a multiple-ego solipsism).
  2. More is different (Aug, 4, 1972)
    P.W. Anderson suggested the fundamental principle of emergence, i.e. that ‘More is Different’, meaning that complex physical systems may exhibit behavior, that cannot be understood only in terms of the laws governing their microscopic constituents. Later this claim was strengthened by proving that many macroscopic observable properties of infinite periodic Ising lattice cannot in general be derived from a it's microscopic description.
  3. Multi-Level Cosmology (1984)
    Linguist Mark Hucko proposed an alternate cosmological theory, based on multi-level Universe concept, which was elaborated recently by Wiltshire, Leith and others and which follows directly from AWT.
  4. Thermodynamics of Spacetime: The Einstein Equation of State (Apr 4, 1995 )
    T.A. Jacobson found equivalence Einstein field equation of general relativity and thermodynamic state equation ΔQ=TdS connecting heat, entropy, and temperature by using a Raychaudhuri equation and the proportionality relation between area and entropy for acceleration horizon. This perspective was generalized recently by Brustein and Hadad and it follows to Universe model composed of ideal Boltzmann gas, for which enthropy was defined originally.
  5. Fabric of reality (March 1997)
    Physicist David Deutsch proposed causual foam concept named after his book, promoting the multiverse, computational, epistemological, and evolutionary principles.
  6. Superfluid helium as a vacuum (Jun 1, 1998)
    Slava Grebenev and colleagues found that small molecules dissolved in droplets of liquid helium can rotate freely, just like they do in a vacuum.
  7. Return of the Aether (Jan 1, 1999)
    Dr. Sid Deutsch in his book makes sense out "quantum weirdness" by resurrecting a long-buried 19th century scientific concept. Only the 140-year-old idea of the ether, brought up to date to to fit modern theory, can explain these gaps.
  8. Ether Re-emerges as the Je Ne Sais Quoi of Physics (Feb 2, 1999)
    Malcom W. Browne in reaction to Dr. Frank Wilczek's issue of Physics Today in NYT article states, "'Empty' space is anything but empty; the ether lives on."
  9. Shock-wave cosmology inside a black hole (June 23, 2002)
    Joel Smoller and Blake Temple proposed mechanism of Universe formation by collision of shock waves during black hole formation, which follows from Aether wave theory, until we consider black hole a material object.
  10. Shock-wave cosmology inside a black hole (October 17, 2002)
    J. Smoller and B. Temple are presenting a shock-wave solutions, indicating a cosmological model in which the big bang arises from a localized explosion occurring inside the black hole of an asymptotically flat Schwarzschild spacetime in analogy to expyrotic cosmology.
  11. Cosmology from the Top Down (May 29, 2003)
    In his talk, Prof. S. Hawking presents observer dependent "top down" cosmology, in which universe exhibits an infinite number of histories and futures, which is consistent with AWT dispersive model of omnidirectional Universe expansion, as proposed first by J.C.Cranwell in about 2004.
  12. Process Physics: From Information Theory to Quantum Space and Matter (June 2003)
    Prof. Reg Cahill in his book presents a dynamic model, where space and matter are seen to emerge from a fundamentally random but self-organising system in a process semantic information modelling.
  13. New Theory: Universe Was Born in a Black Hole (17 September, 2003)
    Blake Temple says, the universe will emerge from all this as something like an exploded star, called a supernova, but on an enormously large scale. Einstein's equations work equally well if time runs forward or backwards. But explosive shockwaves, which include an increase in entropy, are time-irreversible. The new theory satisfies Einstein's equations reportedly, while allowing universe to expand. Compare recent podcast of Brian Greene.
  14. Spacetime and strings as an emergent phenomena (October 9, 2004)
    Ed Witten: "One thing I can tell you, though, is that most string theorist’s suspect that spacetime is a emergent Phenomena in the language of condensed matter physics". Well, not all of them, but it doesn't change the point.
  15. Final step towards the theory of everything (August 29, 2005)
    AWT was presented first in public on, most of this discussion is archived here..
  16. An echo of black holes (November 25, 2005)
    By Dr. W. Unruh analogy sound waves in a fluid behave uncannily like light waves in space. Black holes even have acoustic counterparts. T.A. Jacobson and R. Parentani are speculating, could spacetime literally be a kind of fluid, like the ether of pre-Einsteinian physics?
  17. Life inside a black hole (10 February, 2006)
    Paul Wesson speculates about a way for you to live inside a black hole: find one that has five dimensions...
  18. Luminiferous aether and physical motivation (May 18, 2006)
    Lubos Motl represents his satiety by fact, "101 years after the discovery of special relativity, some people still think that the luminiferous aether was a well motivated idea"...
  19. You are made of space-time (12 August, 2006)
    An popular article about LQG theory and Smolin, Markopoulou and Bilson-Thompson approach to the foamy structure of space-time, driven by causual triangulation of the dynamic mesh of quantum loops.
  20. Ether Theory Challenges "Invisible Mass" (September 8, 2006)
    Glenn Starkman explains, why the presence of ether in the universe better explains the galaxies' behavior with compare to dark matter and dark energy
  21. Single-particle interference observed for macroscopic objects (September 26, 2006)
    Yves Couder and Emmanuel Fort have managed iconic double slit experiment of quantum mechanics in macroscopic particle system formed by silicon oil drop at undulating watter surface, which models probability waves of particle-particle interactions (see video section of Couder's presentations). An upcoming paper of Couder's group in PRL even suggests a quantum tunneling analogy with ordinary droplets.
  22. The universe is a string-net liquid (15 Mar, 2007)
    Wen and Levin are introducing an idea, what if electrons were not really elementary, but were formed at the ends of long "strings" of other, fundamental particles? They formulated a model in which such strings are free to move "like noodles in a soup" and weave together into huge "string-nets".
  23. Mathematician suggests extra dimensions are time-like (April 17, 2007)
    In a recent study, mathematician George Sparling examines a fundamental question of the nature of space and time. Sparling offers an alternative idea: space-time may have six dimensions, with the extra two being time-like.
  24. A Two-Time Universe? (May 15, 2007)
    USC College theoretical physicist Itzhak Bars has pioneered efforts to discern how a second dimension of time could help physicists better explain the laws of nature. (compare the Vafa's F-theory)
  25. Professor proposes theory of unparticle physics (June 11, 2007)
    Howard Georgi, a physicist at Harvard University, has published a two papers on so-called unparticles physics - a formal geometry model of scale invariant density fluctuations of Aether gas.
  26. The Void.. (October, 2007)
    Frank Close, a Professor of Physics at Oxford University introduces a picture of space-time as acting like an elastic medium, which is reminiscent of the very ether that Einstein's work on electromagnetic radiation (p. 89).
  27. Dark Energy Explained? Maybe If Universe Is Like a Black Hole.. (October 08, 2007)
    By physicist J.W. Lee the mysterious dark energy seems to be forcing the universe to accelerate its expansion stems from the resemblance of Universe to "time reversed" black hole (compare the NS article here).
  28. New-School 'Aether' May Shed Light on Neutron Stars (October 10, 2007)
    The UM group proposes, that an aether concept may still have a place in physics: not representing a medium for light waves, but a universal preferred frame of reference that is physical in nature. Unfortunatelly, a vector-field is rather formally understood concept here.
  29. Surfer dude stuns physicists with theory of everything (6 Nov, 2007)
    A. Garrett Lisi is publishing a paper on his "An Exceptionally Simple Theory of Everything", based on explanation of particle generations by rotation of E8 Lie group, describing the most dense arrangenement of particles, formed by density fluctuation of another particles, recursivelly. (a more detailed NS article, a L. Motl's comments)
  30. Emergent spacetimes (28 Nov, 2007)
    Silke Weinfurtner in his thesis disputes a possibility, that perfect fluid sphere geometry of spacetime may be an emergent phenomenon, which has been motivated by the Analogue Gravity programme.
  31. Inhomogeneous Vacuum: An Alternative Interpretation of Curved Spacetime (14 Jan, 2008)
    After one hundred years after Einstein's “refractive” approach to gravitational light-bending and seventy years of first gravitational lens observation, strong similarities between the light propagation in a curved spacetime and that in a medium with graded refractive index were re-vealed. It was pointed out, that a curved spacetime is equivalent to an inhomogeneous vacuum for light propagation.
  32. Fiber-Optical Analog of the Event Horizon (March 7, 2008)
    This experimental work demonstrated, that physics of vacuum at the event horizon is analogy to spreading of waves in moving media and event horizons are formed where the local speed of the medium exceeds the wave velocity. By sending of ultrashort pulses into foamy structure of optical fibers was demonstrated the blue-shifting of light at a white-hole horizon and that system is capable of probing the quantum effects of horizons, in particular Hawking radiation.
  33. Using Causality to Solve the Puzzle of Quantum Spacetime (June 25, 2008)
    If we think of empty spacetime as some immaterial substance, consisting of a very large number of minute, structureless pieces, and if we then let these microscopic building blocks interact with one another according to simple rules dictated by gravity and quantum theor, a new approach to the decades-old problem of quantum gravity goes back to basics and shows how the building blocks of space and time pull themselves together. (readers response).
  34. The straw man of quantum physics (October 15, 2008)
    Peter Morgan points out, the violation of Bell inequalities rules out the straw man class of classical particle property models but leaves untouched the more significant class of classical random field models (discussion).
  35. The Lightness of Being: Mass, Ether, and the Unification of Forces (October 22, 2008)
    Some physicists (especially those interested in LQCD) theorize, that space is highly structured by the grid, which is the primary ingredient of physical reality and the substance from which all physical matter is formed. F. Wilczek says, the grid is a conceptual descendant of ether, that mysterious substance scientists once believed filled empty space.
  36. Why Einstein was wrong about relativity (October 29, 2008)
    Mitchell Feigenbaum insists that Einstein's theory has nothing to do with light - whatever history and the textbooks might say. "Not only is it not necessary," he says, "but there's absolutely no room in the theory for it." Compare the R. Close's derivation of Lorentz transform by using of clock, based on wave spreading. By AWT the position of light is still somewhat special, as it forms the fastest interaction, mediating the causal information spreading for us.
  37. Emergent Electroweak Gravity (December 15, 2008)
    Bob McElrath proposes emergent model of gravity, caused by gradients of primordial neutrino flux, thus following classical Newton's Aether and Fotio-LeSage theory of gravity.
  38. Black holes grew up before galaxies (January 7, 2009)
    New Scientist's article disputes the idea, proposed three years before, the large black holes were formed before galaxies (a "dark energy star" concept is still considered in this connection, though).
  39. A bizarre universe may be lurking in the shadows (March 04, 2009)
    By AWT antimatter never disappear from observable Universe, it was only finely divided (evaporated) into streaks of dark matter. This prediction was presented a two years before and now recent ATIC and PAMELA observations seems to support it, while interpreting the source as a result of WIMPs anihillation (compare the AWT explanation here).
  40. Remarks on the world-sheet saga (Jun 11, 2009)
    From Schroer's general reasoning follows, only 0-dimensional particles are acceptable building blocks in physics. So string theory must be a theory of point-like particle fields with infinitely many components, too. It follows that one can never include winding modes even if the target space is not simply connected and there is no T-duality.
  41. Mimicking celestial mechanics in metamaterials (July 20, 2009)
    In this experiments it has been proposed a link of energy spreading through GaInAsP metamaterial sponge to celesial mechanics, the spreading of light through vacuum in particular (formation of event horizon a photon sphere of black holes, etc.. - compare the AWT explanation here).
  42. The invariant set postulate (June 29, 2009)
    Tim Palmer proposes a new geometric framework for the foundations of quantum theory and the role played by gravity based on assumption, observable reality forms a smaller fractal subset of states in more general state space (supposedly in simmilar way, like observable density fluctutuations of gas are forming subset of many uobservable states of individual molecules).
  43. Ultraviolet Behavior of N=8 Supergravity at Four Loops (August 17, 2009)
    Group of string theorists demonstrated, by combining desirable aspects of string theory and point-like particles they can escape the problem of infinities (viewpoint).

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