Nonrelativistic strings and limits of the AdS/CFT correspondence

May 9, 2017
5 pages
Published in:
  • Phys.Rev.D 96 (2017) 8, 086019
  • Published: Oct 24, 2017
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Abstract: (APS)
Using target space null reduction of the Polyakov action, we find a novel covariant action for strings moving in a torsional Newton-Cartan geometry. Sending the string tension to zero while rescaling the Newton-Cartan clock 1-form, so as to keep the string action finite, we obtain a nonrelativistic string moving in a new type of non-Lorentzian geometry that we call U(1)-Galilean geometry. We apply this to strings on AdS5×S5 for which we show that the zero tension limit is realized by the spin matrix theory limits of the AdS/CFT correspondence. This is closely related to limits of spin chains studied in connection to integrability in AdS/CFT. The simplest example gives a covariant version of the Landau-Lifshitz sigma-model.
Note:
  • 5 pages
  • field theory: conformal
  • string
  • AdS/CFT correspondence
  • nonrelativistic
  • Polyakov action
  • covariance
  • torsion
  • matrix
  • spin
  • string model: Type IIB