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Comparing double string theory actions

  • L. De Angelis
  • G. Gionti S.J
  • R. Marotta
  • F. Pezzella
Open Access
Article

Abstract

Aimed to a deeper comprehension of a manifestly T-dual invariant formulation of string theory, in this paper a detailed comparison between the non-covariant action proposed by Tseytlin and the covariant one proposed by Hull is done. These are obtained by making both the string coordinates and their duals explicitly appear, on the same footing, in the world-sheet action, so “doubling” the string coordinates along the compact dimensions. After a discussion on the nature of the constraints in both the models and the relative quantization, it results that the string coordinates and their duals behave like “non-commuting” phase space coordinates but their expressions in terms of Fourier modes generate the oscillator algebra of the standard bosonic string. A proof of the equivalence of the two formulations is given. Furthermore, open-string solutions are also discussed.

Keywords

Bosonic Strings String Duality 

Notes

Open Access

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Copyright information

© The Author(s) 2014

Authors and Affiliations

  • L. De Angelis
    • 1
  • G. Gionti S.J
    • 2
  • R. Marotta
    • 3
  • F. Pezzella
    • 3
  1. 1.Dipartimento di FisicaUniversità degli Studi “Federico II” di NapoliNapoliItaly
  2. 2.Specola Vaticana, Vatican City, V-00120, Vatican City State and Vatican Observatory Research Group, Steward ObservatoryThe University Of ArizonaTucsonU.S.A
  3. 3.Istituto Nazionale di Fisica Nucleare, Sezione di NapoliNapoliItaly

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