The concept of gravity having an elementary particle, often referred to as the "graviton," is a hypothetical idea in the context of quantum gravity theories. It suggests that gravity, like the other fundamental forces, could be mediated by the exchange of particles.
If such gravitons existed, their interaction with matter would depend on their properties and the nature of the gravitational force they mediate. However, it's important to note that the hypothetical gravitons have not been observed or confirmed experimentally, and the properties and behavior of these particles are purely speculative at this point.
In terms of reflecting or absorbing gravitons, we can speculate on possible outcomes in an experiment, although these are purely hypothetical scenarios:
Reflection: If an object could somehow reflect gravitons, it would imply that gravitons can transfer momentum to the object upon reflection, similar to how photons transfer momentum when they are reflected. This could potentially lead to a change in the object's motion or trajectory in response to the reflected gravitons.
Absorption: If an object could absorb gravitons, it might be expected to experience a transfer of energy and momentum from the absorbed gravitons. This could potentially result in a change in the object's gravitational properties or interactions with other objects.
However, it's important to emphasize that these scenarios are purely speculative, as the existence and properties of gravitons are still highly uncertain and the subject of ongoing research in the field of quantum gravity.
It's also worth noting that the gravitational force is extremely weak compared to other fundamental forces, which makes it challenging to observe and manipulate at the quantum level. Experimental verification of such hypothetical scenarios would require advanced technology and methods beyond our current capabilities.