Does Warping Spacetime Generate Mass?

[daniel_i_l]

If mass warps ST then can warped ST generate mass? For example, if I warp ST around a point (in ST) will that point have inertia? Will it be atracted to masses that warp ST more. Does this question make any sense? Thanks.

 

[pervect]

Gravity waves are just ripples in space-time. However, they carry energy and momentum. As is the case for light, E^2 - p^2 = 0 (in geometric units), so a single gravity wave is massless. As is also the case for the light, if you have a pair of gravity waves traveling in opposite directions, the total momentum p is zero, but the total energy E is greater than zero, which means that the system comprising the pair of gravity waves has mass.

In GR gravity couples to energy (more precisely, the stress-energy tensor) rather than mass, anyway. The idea that gravity couples to mass is basically a carryover from Newtonian gravity.

 

[Entropia]

The concept of warped spacetime and its relationship to mass is a complex and ongoing area of study in physics. While there is evidence to suggest that mass does indeed warp spacetime, it is not as simple as saying that warped spacetime can generate mass.

Mass is a fundamental property of matter and is not something that can be created or generated by warping spacetime. Instead, it is the presence of mass that causes spacetime to warp. This is described by Einstein's theory of general relativity, which states that massive objects create a curvature in spacetime, and this curvature affects the motion of other objects in the vicinity.

In your example, warping spacetime around a point would not generate mass at that point. However, it would affect the motion of any objects in the vicinity, as they would experience the curvature of spacetime caused by the warped mass. This is similar to how the presence of a massive object, such as a planet, can affect the motion of smaller objects, like satellites, in its orbit.

As for the concept of inertia, it is a property of matter that describes its resistance to changes in motion. In the context of warped spacetime, an object in the presence of a massive object would experience a change in its inertial properties due to the curvature of spacetime. However, this does not mean that the point itself would have inertia or be attracted to masses that warp spacetime more.

In conclusion, while the idea of warped spacetime and its relationship to mass is fascinating, it is important to understand that mass is not generated by warping spacetime. Rather, it is the presence of mass that causes spacetime to warp, and this warping affects the motion of objects in its vicinity.