Andreas Karch

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  www.justrluck.com/stars.html - [Cached Version]
  Published on: 12/21/2007    Last Visited: 12/21/2007  

  The 43-year-old Randall is now collaborating with Andreas Karch of the University of Washington, investigating some of the cosmological implications of branes and extra dimensions.
  ...
  "I often don't understand her," Karch confesses.

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  uwnews.org/apps/uwnews/public/rss.aspx?q=uwnByExpertID& - [Cached Version]
  Published on: 9/28/2005    Last Visited: 5/29/2007  

  Andreas Karch    karch@feynman.phys.washington.edu uwnews.org | RSS news feed: news releases by expert: Andreas Karch | karch@feynman.phys.washington.edu | | University of WashingtonThis RSS news feed from uwnews.org, the University of Washington Office of News and Information, includes articles about Andreas Karch (karch@feynman.phys.washington.edu).

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  www.science-thinkery.org/www/news/d_news2.php - [Cached Version]
  Published on: 9/17/2005    Last Visited: 4/9/2007  

  Andreas Karch (University of Washington) and Lisa Randall (Harvard) propose to explain why we live in three dimensions and not some other number.
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  Specifically, Karch and Randall address themselves to the behavior of three-dimensional force laws, including the force of gravity.

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  www.newsblaster.com/pressrelease.php?275 - [Cached Version]
  Published on: 3/12/2007    Last Visited: 3/24/2007  

  Andreas Karch, assistant professor of physics at the University

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  AAPPS WEB Site / Bulletin Vol.16 No.3 - [Cached Version]
  Published on: 12/19/2006    Last Visited: 11/10/2008  

  Andreas Karch, University of Washington

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  NEW PHYSICS INSPIRED BY EINSTEIN'S FAMOUS THOUGHT... - [Cached Version]
  Published on: 10/18/2006    Last Visited: 12/9/2008  

  "That's what comes out when you do the math," said Andreas Karch, a University of Washington assistant professor of physics.
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  Karch said they hope the work will spark extensive scientific exploration of many other questions involving string theory, extra dimensions and the evolution of the cosmos.
  
  "What's Wrong with Quantum Mechanics?"

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  National Academy of Sciences: Frontiers of Science - [Cached Version]
  Published on: 11/5/2004    Last Visited: 4/8/2006  

  CHAIR: Andreas Karch, University of Washington

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  Niko Skorpio - journal - [Cached Version]
  Published on: 10/25/2004    Last Visited: 11/17/2005  

  Andreas Karch (University of Washington) and Lisa Randall (Harvard) propose to explain why we live in three dimensions and not some other number.
  ...
  Specifically, Karch and Randall address themselves to the behavior of three-dimensional force laws, including the force of gravity.
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  In the present paper, Karch and Randall show that the cosmic evolution of the 10D universe, involving a steady dilution of matter, results in spacetime being populated chiefly by 3D and 7D branes.Several versions of string theories require the existence of 3D and 7D branes; indeed, the particles that constitute matter---such as quarks and electrons---can be considered open strings with one end planted on a 3D brane and the other end planted on a 7D brane. (Karch and Randall, Physical Review Letters, upcoming article )

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  PALAEOBLOG: October 2005 - [Cached Version]
  Published on: 10/1/2005    Last Visited: 11/2/2005  

  "That's what comes out when you do the math," said Andreas Karch, a University of Washington assistant professor of physics and lead author of a new paper that details the theory.
  
  Karch and his collaborator, Lisa Randall, a physics professor at Harvard, set out to model how the universe was arranged right after it began in the big bang, and then watch how the cosmos evolved as it expanded and diluted.
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  Other realities, either three- or seven-dimensional, could be hidden from our perception in the universe, Karch said.
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  Gravity, however, cuts across all dimensions, even those not recognized in our world, Karch and Randall say.But they theorize that the force of gravity is localized and, with seven branes, gravity would diminish far more quickly with distance than it does in our three-dimensional world.
  
  "We know there are people in our three-brane existence.In this case we will assume there are people somewhere nearby in a seven-brane existence.The people in the three-brane would have a far more interesting world, with more complex structures," Karch said.
  
  With gravity diminishing rapidly with distance, a seven-dimensional existence would not have planets with stable orbits around their sun, Karch said.
  
  "I am not precisely sure what a universe with such a short-range gravity would look like, mostly because it is always difficult to imagine how life would develop under completely different circumstances," he said."But in any case, planetary systems as we know them wouldn't form.The possibility of stable orbits is what makes the three-dimensional world more interesting."
  
  Karch and Randall detail their work in the October edition of Physical Review Letters, published by the American Physical Society.
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  Karch said they hope the work will spark extensive scientific exploration of many other questions involving string theory, extra dimensions and the evolution of the cosmos.

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  Physicists Say Universe Evolution Favored Three And... - [Cached Version]
  Published on: 9/29/2005    Last Visited: 9/29/2005  

  "That's what comes out when you do the math," said Andreas Karch, a University of Washington assistant professor of physics and lead author of a new paper that details the theory.
  
  Karch and his collaborator, Lisa Randall, a physics professor at Harvard, set out to model how the universe was arranged right after it began in the big bang, and then watch how the cosmos evolved as it expanded and diluted.
  ...
  Other realities, either three- or seven-dimensional, could be hidden from our perception in the universe, Karch said.
  ...
  Gravity, however, cuts across all dimensions, even those not recognized in our world, Karch and Randall say.But they theorize that the force of gravity is localized and, with seven branes, gravity would diminish far more quickly with distance than it does in our three-dimensional world.
  
  "We know there are people in our three-brane existence.In this case we will assume there are people somewhere nearby in a seven-brane existence.The people in the three-brane would have a far more interesting world, with more complex structures," Karch said.With gravity diminishing rapidly with distance, a seven-dimensional existence would not have planets with stable orbits around their sun, Karch said.
  
  "I am not precisely sure what a universe with such a short-range gravity would look like, mostly because it is always difficult to imagine how life would develop under completely different circumstances," he said."But in any case, planetary systems as we know them wouldn't form.The possibility of stable orbits is what makes the three-dimensional world more interesting."
  
  Karch and Randall detail their work in the October edition of Physical Review Letters, published by the American Physical Society.
  ...
  Karch said they hope the work will spark extensive scientific exploration of many other questions involving string theory, extra dimensions and the evolution of the cosmos.

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