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The 'New Physics' Model of Dark Energy Nixed

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  • derhexerus
    URL to an interesting post in the Daily Galaxy _http://tinyurl.com/abg4ruh_ (http://tinyurl.com/abg4ruh) And I hadn t even quite figured out what dark energy
    Message 1 of 1 , Jan 10, 2013
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      URL to an interesting post in the Daily Galaxy
      _http://tinyurl.com/abg4ruh_ (http://tinyurl.com/abg4ruh)

      And I hadn't even quite figured out what dark energy is. Crap!

      First couple of paragraphs

      "
      Last month, a group of European astronomers, using a massive radio
      telescope in Germany, made the most accurate measurement of the _proton-to-electron
      mass ratio_ (http://en.wikipedia.org/wiki/Proton-to-electron_mass_ratio)
      ever accomplished and found that there has been no change in the ratio to
      one part in 10 million at a time when the universe was about half its current
      age, around 7 billion years ago. When University of Arizona astronomy
      professor Rodger Thompson put this new measurement into his calculations, he
      found that it excluded almost all of the dark energy models using the
      commonly expected values or parameters.
      The research Thompson completed showed that a popular alternative to
      Albert Einstein's theory for the acceleration of the expansion of the universe
      does not fit newly obtained data on a _fundamental constant_
      (http://en.wikipedia.org/wiki/Dimensionless_physical_constant) , the proton to electron
      mass ratio. Thompson's findings, reported Jan. 9 at the _American Astronomical
      Society_ (http://aas.org/) meeting in Long Beach, Calif., impact our
      understanding of the universe and point to a new direction for the further study
      of its accelerating expansion.
      To explain the acceleration of the expansion of the universe,
      astrophysicists have invoked dark energy – a hypothetical form of energy that permeates
      all of space. A popular theory of dark energy, however, does not fit new
      results on the value of the proton mass divided by the electron mass in the
      early universe.
      Thompson computed the predicted change in the ratio by the dark energy
      theory (generally referred to as rolling scalar fields) and found it did not
      fit the new data. UA alumnus _Brian Schmidt_
      (http://en.wikipedia.org/wiki/Brian_Schmidt) , along with _Saul Perlmutter_
      (http://en.wikipedia.org/wiki/Saul_Perlmutter) and Adam Reiss, won the 2011 Nobel Prize in Physics for
      showing that the _expansion of the universe is accelerating_
      (http://en.wikipedia.org/wiki/Accelerating_universe) rather than slowing down as previously
      thought. The acceleration can be explained by reinstating the "cosmological
      constant" into Einstein's _theory of General Relativity_
      (http://en.wikipedia.org/wiki/General_relativity) .
      Einstein originally introduced the term to make the universe stand still.
      When it was later found that the universe was expanding, Einstein called the
      cosmological constant "his biggest blunder." The constant was reinstated
      with a different value that produces the observed acceleration of the
      universe's expansion. Physicists trying to calculate the value from known
      physics, however, get a number more than 10 to the power of 60 (one followed by 60
      zeros) too large – a truly astronomical number.
      That's when physicists turned to new theories of dark energy to explain the
      acceleration. In his research, Thompson put the most popular of those
      theories to the test, targeting the value of a fundamental constant (not to be
      confused with the cosmological constant), the mass of the proton divided by
      the mass of the electron. A fundamental constant is a pure number with no
      units such as mass or length. The values of the fundamental constants
      determine the laws of physics. Change the number, and the laws of physics
      change. Change the fundamental constants by a large amount, and the universe
      becomes very different from what we observe.
      The new physics model of dark energy that Thompson tested predicts that the
      fundamental constants will change by a small amount. Thompson identified a
      method of measuring the proton to electron mass ratio in the early
      universe several years ago, but it is only recently that astronomical instruments
      became powerful enough to measure the effect. More recently, he determined
      the exact amount of change that many of the new theories predict. "



      Chris

      (I reject your reality and substitute my own)

      [Non-text portions of this message have been removed]
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