topology - WMAP - urgent

boud boud w
Śro, 19 Mar 2003, 20:05:07 CET

   Micha³, Bartek, anyone else interested.

Now that there's some big time media coverage, anyone interested
in working together on this? IMHO it's urgent to do the analysis

I haven't fully understand Marek's comments, but I think he's just
playing safe ;) - no harm there.

Anyone who sees signs that our North/South American and or European
colleagues have done something concrete on this, please say and point
to the URL!


amr wrote:
> Artyku³ o odkryciu ("odkryciu" ?) Tegmarka:

> Krytyka Marka Demiañskiego:

---------- Forwarded message ----------
> Date: Wed, 19 Mar 2003 12:57:53 +0100 (MET)
> From: Programme National de Cosmologie <pnc at>
> To: diffusion PNC <pnc at>
> Subject: divers ...


 4. Extraits d'un article du New-York Times du 11 mars 2003
    "Universe as Doughnut: New Data, New Debate"

    The New York Times
    March 11, 2003
    Universe as Doughnut: New Data, New Debate

    Long ago in the dawn of the computer age, college students often
    whiled away the nights playing a computer game called Spacewar. It
    consisted of two rocket ships attempting to blast each other out
    of the sky with torpedoes while trying to avoid falling into a
    star at the center of the screen.

    Although cartoonish in appearance, the game was amazingly faithful
    to the laws of physics, complete with a gravitational field that
    affected both the torpedoes and the rockets. Only one feature
    seemed outlandish: a ship that drifted off the edge of the screen
    would reappear on the opposite side.

    Real space couldn't work that way.

    Or could it?

    Imagine that the Spacewar screen is wrapped around to form a
    cylinder or a section of a doughnut so that the two edges meet.

    That is the picture of space, some cosmologists say, that has been
    suggested by a new detailed map of the early universe. Their
    analysis of this map has now provided a series of hints  though
    only hints  that the universe may have a more complicated shape
    than astronomers presumed.


    This mirror game is not limited to cubes and doughnuts. Over the
    years mathematicians, particularly Dr. William Paul Thurston, now
    at the University of California at Davis, and Dr. Jeffrey Weeks,
    an independent mathematician, have speculated about universes
    composed of various polyhedrons glued together in various ways.

    In 1996 the French astronomer Dr. Jean-Pierre Luminet of the Paris
    Observatory and his colleagues Dr. Roland Lehoucq and Dr. Marc
    Lachieze-Rey, both of the Center for Astrophysical Studies in
    Saclay, France, developed a method called "cosmic
    crystallography," using galaxy statistics to detect and diagnose
    the repeating periodic patterns that would be created in the sky
    by light going around and around in differently shaped universe.

    Finite or Infinite?
    Problems Are Posed
    For Favored Theory



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