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lukegregor
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Hi! Isn't gravity just a smaller object moving toward the lower energy state created by a larger object (time slows down the closer you are to a massive object)? Why do we need a force carrying particle for gravity?
Because what you have written there is not an explanation; it is merely an observation.lukegregor said:Hi! Isn't gravity just a smaller object moving toward the lower energy state created by a larger object (time slows down the closer you are to a massive object)? Why do we need a force carrying particle for gravity?
Thats not a mechanism, that's an observation. It doesn't explain how it works.lukegregor said:Isn't the mechanism that any object settles/moves toward the lowest available energy state?
As you may know, @lukegregor, general relativity (GR) describes how mass effects spacetime, but as @DaveC426913 has noted, that does not explain how gravity works. In particular, GR does not reconcile with quantum mechanics (QM) which means there are situations where our understanding of physical processes is incomplete..and even seemingly impossible. Black holes with infinite density are an example, as is the firewall paradox.lukegregor said:Why do we need a force carrying particle for gravity?
This is a very inaccurate picture of gravity. A simple question: what happens if there are two equal mass objects?lukegregor said:Hi! Isn't gravity just a smaller object moving toward the lower energy state created by a larger object (time slows down the closer you are to a massive object)?
As I said above, that isn't a generally applicable description in GR. Even if it were, it doesn't provide a mechanism to calculate the energy states near singularities our only model of gravity fails.lukegregor said:Isn't the mechanism that any object settles/moves toward the lowest available energy state?
It may be useful to research gravity to improve your understanding, @lukegregor, because you seem to have just asked the same question you have already asked in this thread. Gravity is not based on 'wells' or 'bendable sheets', which are commonly used to convey a simplistic view of GR but they won't take you anywhere near far enough to usefully discuss gravitons...or not gravitons.lukegregor said:Thank you for your replies! If you have an object traveling through "normal" space/time and it comes across the lower energy space/time distortion field (i.e. "gravity well") created by a massive object, wouldn't the object naturally move toward the lower energy distortion field due to the conservation of energy? Seems like this already defines the mechanism for "gravitational attraction" and there's no need for a graviton...?
As I already said, this is not a general explanation of gravity. You cannot apply conservation of energy when you cannot define gravitational potential energy. Also, we need a better theory of gravity to cover extreme circumstances where GR fails, and we have reason to expect this to be a quantum theory.lukegregor said:wouldn't the object naturally move toward the lower energy distortion field due to the conservation of energy?
Gravitons are hypothetical particles that are believed to be the carriers of the force of gravity. They are needed to explain gravitational attraction because according to the theory of general relativity, gravity is not a force between masses, but rather a curvature of space and time caused by the presence of mass and energy. Gravitons help to explain how this curvature of space and time interacts with matter and causes objects to be attracted to each other.
Gravitons are not explicitly mentioned in the theory of general relativity, but they are a part of the broader framework of quantum field theory, which seeks to explain the fundamental forces of nature. In this framework, gravitons are the particles associated with the gravitational force, similar to how photons are the particles associated with the electromagnetic force.
No, gravitons have not yet been detected directly. They are still a theoretical concept and have not been observed in experiments. However, scientists are actively searching for evidence of gravitons through experiments such as the Laser Interferometer Gravitational-Wave Observatory (LIGO) and the European Space Agency's Laser Interferometer Space Antenna (LISA).
There is currently no evidence to suggest that gravitons are involved in the behavior of dark matter. Dark matter is still a mystery, and scientists are exploring various theories to explain its behavior. However, some theories propose that dark matter particles could interact with gravitons, which could potentially help to explain their behavior.
No, gravitons are not the only explanation for gravitational attraction. There are other theories, such as modified Newtonian dynamics (MOND), that seek to explain gravity without the need for gravitons. However, gravitons are currently the most widely accepted explanation for how gravity works at a fundamental level, and they are consistent with our current understanding of the universe.