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Help me (about a graviton)

  1. Aug 2, 2004 #1
    I don't know the relation of graviton and closed string.
    Why the graviton is closed string? And what conditions need that? :confused:
    I really want to know about it in detail.(of course including formula)
     
  2. jcsd
  3. Aug 2, 2004 #2

    selfAdjoint

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    The graviton in bosonic string theory comes from the interaction of the right moving excitations and the left moving ones on the string. This requires the string to be closed; on an open string the R and L excitations would just peter out at the endpoints.
     
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