Post-Newtonian limit of generalized symmetric teleparallel gravity

Understand

In this article we analyze the post-Newtonian approximation of a generalization of the symmetric teleparallel gravity with the help of the parameterized post-Newtonian (PPN) formalism.

• This class of theories is based on a free function of the five independent quadratic contractions of the non-metricity tensor.
• By calculating the PPN metric of these theories, we can restrict the Taylor coefficients of the free function with the help of the PPN parameters and their observational bounds.
• We find two families of theories whose PPN parameters are identical to those of general relativity, and thus in full agreement with observations.