Post-Newtonian approximation of teleparallel gravity coupled with a scalar field

Zu Cheng Chen; You Wu; Hao Wei

doi:10.1016/j.nuclphysb.2015.03.012

Post-Newtonian approximation of teleparallel gravity coupled with a scalar field

Zu Cheng Chen, You Wu, Hao Wei^*

^*Corresponding author for this work

School of Physics

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

We use the parameterized post-Newtonian (PPN) formalism to explore the weak field approximation of teleparallel gravity non-minimally coupling to a scalar field ϕ, with arbitrary coupling function ω(ϕ) and potential V(ϕ). We find that all the PPN parameters are identical to general relativity (GR), which makes this class of theories compatible with the Solar System experiments. This feature also makes the theories quite different from the scalar-tensor theories, which might be subject to stringent constraints on the parameter space, or need some screening mechanisms to pass the Solar System experimental constraints.

Original language	English
Pages (from-to)	422-438
Number of pages	17
Journal	Nuclear Physics B
Volume	894
DOIs	https://doi.org/10.1016/j.nuclphysb.2015.03.012
Publication status	Published - 1 May 2015

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abstract = "We use the parameterized post-Newtonian (PPN) formalism to explore the weak field approximation of teleparallel gravity non-minimally coupling to a scalar field ϕ, with arbitrary coupling function ω(ϕ) and potential V(ϕ). We find that all the PPN parameters are identical to general relativity (GR), which makes this class of theories compatible with the Solar System experiments. This feature also makes the theories quite different from the scalar-tensor theories, which might be subject to stringent constraints on the parameter space, or need some screening mechanisms to pass the Solar System experimental constraints.",

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AU - Wu, You

AU - Wei, Hao

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AB - We use the parameterized post-Newtonian (PPN) formalism to explore the weak field approximation of teleparallel gravity non-minimally coupling to a scalar field ϕ, with arbitrary coupling function ω(ϕ) and potential V(ϕ). We find that all the PPN parameters are identical to general relativity (GR), which makes this class of theories compatible with the Solar System experiments. This feature also makes the theories quite different from the scalar-tensor theories, which might be subject to stringent constraints on the parameter space, or need some screening mechanisms to pass the Solar System experimental constraints.

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JO - Nuclear Physics B

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Post-Newtonian approximation of teleparallel gravity coupled with a scalar field

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