Galileon string measure and other modified measure extended objects

T. O. Vulfs, E. I. Guendelman

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


We show that it is possible to formulate string theory as a "Galileon string theory". The Galileon field enters in the definition of the integration measure in the action. Following the methods of the modified measure string theory, we find that the final equations are again those of the sigma-model. Moreover, the string tension appears again as an additional dynamical degree of freedom. At the same time, the theory satisfies all requirements of the Galileon higher derivative theory at the action level while the equations of motion are still of the second-order. A Galileon symmetry is displayed explicitly in the conformal string worldsheet frame. Also, we define the Galileon gauge transformations. Generalizations to branes with other modified measures are discussed.

Original languageEnglish
Article number1750211
JournalModern Physics Letters A
Issue number38
StatePublished - 14 Dec 2017


  • Galileon
  • Galileon string measure
  • modified measure
  • string tension
  • two-measure theory

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Astronomy and Astrophysics
  • General Physics and Astronomy


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