Tests of Conservation Laws in Post-Newtonian Gravity with Binary Pulsars

Miao, Xueli

General relativity is a fully conservative theory, but there exist other possible metric theories of gravity. We consider nonconservative ones with a parameterized post-Newtonian parameter, zeta_2. In our work, using Will's method, we provide an improved analysis with four well-timed, carefully chosen binary pulsars.  We give a zeta_2 a new bound.