PPN and alternative theories of gravity

Hi, i am working in an alternative theory of gravity.

One of the surprises was that there are not BH singularities like in
GR. Then i did go further and obtained a PPN representation,

ds^2 = - (1 + 2 alpha (MG/r) + 2 (beta - alpha gamma) (MG/r)^2 +
···) dt^2

+ (1 - 2 gamma (MG/r) + ···) dr^2 + ···

The three elements in the dt^2 term coincide with GR. Only the two
first in dr^2 term coincide with GR. A priori i thought that would be a
problem because i thought that author of the book only introduced two
terms here by comodity, but in

Clifford M. Will. The Confrontation between General Relativity and
Experiment.

[http://www.livingreviews.org/Articles/Volume4/2001-4will/.]

the radial term is also cut at first order in (1/r).

There are experiments measuring this term or only temporal component
can be measured at that precision?


Juan R.

Center for CANONICAL |SCIENCE)

.