General Relativity and Gravitation

, Volume 42, Issue 3, pp 489–508 | Cite as

Is the non-physical states conjecture valid?

  • Alfredo Macías
  • Abel CamachoEmail author
  • Luis F. Barragán-Gil
  • Claus Lämmerzahl
Research Article


The canonical quantization for N = 1 supergravity in the context of gravitational minisuperspace described by Gowdy T 3 and Bianchi class A cosmological models is analyzed in order to search for physical states. There are indeed physical states in the minisuperspace sector of the theory. This fact entails that the non-physical states conjecture has a restricted validity, and in consequence it cannot be considered a general result.


Quantum supergravity Non-physical states conjecture 


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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Alfredo Macías
    • 1
  • Abel Camacho
    • 1
    Email author
  • Luis F. Barragán-Gil
    • 1
  • Claus Lämmerzahl
    • 2
  1. 1.Departamento de FísicaUniversidad Autónoma Metropolitana-IztapalapaMéxico, D.F.Mexico
  2. 2.ZARMUniversity of BremenBremenGermany

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