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Holocene
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I hardly know anything about quantum mechanics. Why does it clash with general relativity?
Holocene said:ah, got it.
And thus Einstein's quote, "God does not play dice".
Some have claimed this quote is indication that Einstein believed in a god.
off-diagonal said:yes, he believed in God but his God is a rules that dominate everything in the universe.
bill nye scienceguy! said:why shouldn't you be able to find god in a lump of coal?
Bose said:We know photon exist for sure but we don't know if graviton exist
If that's the case, do we need to quantize GR anymore?
How should we interpret the particle superposition? Instead of saying the wave function is telling us that the particle is in many places at once, what's wrong with saying it refers to the possible results of some measurement preparation and it assigns certain values (probabilities) to those possibilities?lbrits said:... Suppose we do a double-slit experiment so that we end up with a wavefunction for a particle with several peaks in space. Now, every particle, no matter how small, gravitates, and exerts an influence on other particles through gravity. If we have a wavefunction telling us that the particle is in a superposition of being in many places, then how should we interpret the gravitational field that the particle sets up? Should the metric be in a superposition too? For things to be consistent, the answer is yes! Unfortunately, so far only the string theorists (ok, some semi-classical gravity people) have a model in which this can be done, but there are many problems.
ThomasT said:How should we interpret the particle superposition? Instead of saying the wave function is telling us that the particle is in many places at once, what's wrong with saying it refers to the possible results of some measurement preparation and it assigns certain values (probabilities) to those possibilities?
Holocene said:I hardly know anything about quantum mechanics. Why does it clash with general relativity?
The mathematics of quantum mechanics is quite firmly in the realm of continuous mathematics... In what sense could you mean this?phyti said:QM is defined in terms of discrete concepts.
General relativity and quantum mechanics are two distinct theories that describe different aspects of the universe. General relativity explains the behavior of large objects and the force of gravity, while quantum mechanics describes the behavior of particles on a subatomic level. These theories have different mathematical frameworks and are incompatible with each other, making it difficult to merge them into one unified theory.
The main difference between general relativity and quantum mechanics is the scale at which they operate. General relativity applies to large objects like planets and galaxies, while quantum mechanics applies to tiny particles such as atoms and subatomic particles. Additionally, general relativity is a classical theory that describes gravity as a curvature of spacetime, while quantum mechanics is a quantum theory that describes the behavior of particles and their interactions.
No, general relativity and quantum mechanics are not compatible and cannot be used together to explain the entire universe. While both theories are incredibly successful in their respective domains, they break down when trying to explain certain phenomena, such as the behavior of black holes or the origin of the universe. A unified theory that combines both theories is still a subject of ongoing research in physics.
Yes, there have been numerous attempts to reconcile general relativity and quantum mechanics, such as string theory and loop quantum gravity. However, these theories are still in the early stages of development and have not yet been proven experimentally. It is also possible that a completely new theory may be needed to reconcile these two seemingly incompatible theories.
Some scientists believe that general relativity and quantum mechanics are just different approximations of a more fundamental theory that can explain both gravity and the behavior of particles. This theory, often referred to as quantum gravity, is still under active research and has not yet been fully developed. However, if proven correct, it could potentially reconcile the discrepancies between general relativity and quantum mechanics.