<p>We consider supergravity theories with 8 supercharges in <i>d</i> = 6. We show that all the proposed anomaly free theories with unbounded number of massless modes are restricted to a finite subset and thus argue that there is an upper bound on the number of massless modes, consistent with the String Lamppost Principle.</p>

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On the finiteness of 6d supergravity Landscape

  • Houri-Christina Tarazi,
  • Cumrun Vafa

摘要

We consider supergravity theories with 8 supercharges in d = 6. We show that all the proposed anomaly free theories with unbounded number of massless modes are restricted to a finite subset and thus argue that there is an upper bound on the number of massless modes, consistent with the String Lamppost Principle.