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Paper   IPM / Particles / 16594
School of Particles and Accelerator
  Title:   Hamiltonian formalism of the ghost free Tri(-Multi)gravity theory
1.  Zahra Molaee
2.  Ahmad Shirzad
  Status:   Published
  Journal: Class.Quant.Grav
  No.:  065006
  Vol.:  38
  Year:  2021
  Supported by:  IPM
We study the Hamiltonian structure of tri-gravity and four-gravity in the framework of ADM decomposition of the corresponding metrics. Hence we can deduce the general structure of the constraint system of multi-gravity. We will show it is possible and consistent to assume additional constraints which provide the needed first class constraints for generating diffeomorphism as well as enough second class constraints to omit the ghosts.

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