Quantum mechanics is a great way of modelling the interactions of subatomic particles but I don't think it is an accurate description of subatomic reality.

That's quite wrong. Quantum mechanics, along with relativity, are the most precisely tested theories that there is in physics, specifically quantum electro-dynamics (QED). For more on this please see:

http://scienceblogs.com/principles/2011/05/05/the-most-precisely-tested-theohttps://en.wikipedia.org/wiki/Precision_tests_of_QED In the same way that the Newtonian theory of gravity could be used to land a man on the moon or was instrumental in the realisation that light had speed.

Relativity, both special and general, are even more precise than Newtonian mechanics and gravity. The later cannot be used to correctly describe the amount that rays of light are deflected by the Sun.

While Einsteins theories of gravity demonstrated that gravity was due the effect caused by time-space being curved , which allowed the prediction of blackholes .

That isn't quite accurate. All that Einstein's general relativity (GR) is able to do is to describe the phenomena of gravity much better than Newtonian gravity and predicts even more phenomena light gravitational red/blue shift etc. To Einstein, inertial and gravitational forces are identical. That means that if there's an inertial force present on a particle then the particle is subject to a

*real* gravitational force.

The region of spacetime of interest need not be curved for there to be a gravitational field present. The uniform g-field has no spacetime curvature. In fact the definition of a uniform gravitational field has no spacetime curvature. See my website at:

http://home.comcast.net/~peter.m.brown/gr/uniform_field.htm Fritz Rohrlich, a prominent physicist, derived the metric (i.e. a set of 10 independent "gravitational potentials")

Principle of Equivalence, F. Rohrlich, Ann. Phys. 22, 169-191, (1963), page 173/

The weak equivalence principle states

A uniform gravitational field is equivalent to a uniformly accelerated frame of reference

This means that in a uniform gravitational field there is a gravitational field present but the spacetime is curved. A spacetime which is curved will always have a gravitational field present everywhere except at the least the origin of the coordinate system. The reason people hold on to the gravity = curvature definition is that such a field is "permanent" and can't fully be transformed away like a uniform gravitational field can. However Einstein stuck to the interpretation that gravity = inertial acceleration definition. To learn more please read my paper on the subject at

http://xxx.lanl.gov/abs/physics/0204044For proof see the calculation I did for the gravitational field of a uniform gravitational field. See my results at:

http://home.comcast.net/~peter.m.brown/gr/uniform_force.htm