- #1
metrictensor
- 117
- 1
Does anyone know how in LQG they avoid the contradiction of a smallest unit of quantized space and Lorentz contraction?
metrictensor said:Does anyone know how in LQG they avoid the contradiction of a smallest unit of quantized space and Lorentz contraction?
marcus said:Smolin's prediction will be tested in 2007 by the satellite observatory GLAST (gammaray large array space telescope).
Locrian said:Wait a second. Am I to read this as suggesting that a hypothesis containing a quantum theory of gravity is making a prediction that can be tested? This is strange news indeed.
Is there a place I can read more on this? I'm afraid to pull the paper itself, as I may understand very little of it.
marcus said:where did you get the impression that no version of LQG is testable? (from a string supporter maybe? they say all sorts of things )
that I can really understand!Locrian said:.. and more a reflection of my disgruntlement with modern theoretical physics.
...
The boosted observer can see the same observable spectrum, with the same minimal area. What changes continuously in the boost transformation is not the value of the minimal length: it is the probability distribution of seeing one or the other of the discrete eigenvalues of the area.
Hurkyl said:Oh, that's cool, I can see how that one works!
metrictensor said:Does anyone know how in LQG they avoid the contradiction of a smallest unit of quantized space and Lorentz contraction?
Quantized space is a fundamental concept in loop quantum gravity, which is a proposed theory of quantum gravity that attempts to reconcile the principles of general relativity and quantum mechanics. In this theory, space is considered to be composed of discrete, indivisible units or "quanta", rather than a continuous and infinitely divisible entity.
Lorentz contraction, also known as length contraction, is a phenomenon predicted by Einstein's theory of special relativity. It describes how an object appears to shorten in length when moving at high speeds. In loop quantum gravity, this contraction is thought to be caused by the discrete, quantized nature of space and its effects on the geometry of spacetime.
Currently, there is no direct evidence for the existence of quantized space and Lorentz contraction in loop quantum gravity. This theory is still in its early stages and further experimental and observational evidence is needed to support its claims.
Loop quantum gravity differs from other theories of quantum gravity, such as string theory, in its approach to understanding the fundamental nature of spacetime. While string theory proposes that space is composed of tiny, vibrating strings, loop quantum gravity suggests that space is discrete and quantized. Additionally, loop quantum gravity does not require the existence of additional dimensions beyond the four dimensions of spacetime.
At this point, loop quantum gravity is still a theoretical framework and has not been fully developed or tested. While there have been some attempts to apply its principles to cosmology and black hole physics, more research and experimentation is needed before it can be applied in practical ways. However, the development of this theory may lead to a greater understanding of the nature of our universe and potentially have practical applications in the future.