The Parameterized Post-Newtonian-Vainshteinian formalism for the Galileon field

Understand

Recently, an extension to the Parameterized Post-Newtonian (PPN) formalism has been proposed.

• This formalism, the Parameterized Post-Newtonian-Vainshteinian (PPNV) formalism, is well suited to theories which exhibit Vainshtein screening of scalar fields.
• In this paper we apply the PPNV formalism to the Quartic and Quintic Galileon theories for the first time.
• As simple generalizations of standard scalar-tensor field theories they are important guides for the generalization of parameterized approaches to the effects of gravity beyond General Relativity.