Quantum vs GR: How BIG is Time?

  • Context: Graduate 
  • Thread starter Thread starter Wave's_Hand_Particle
  • Start date Start date
  • Tags Tags
    Quantum
Click For Summary
SUMMARY

The discussion centers on the nature of time in Quantum Mechanics (QM) and General Relativity (GR), highlighting the apparent contradiction between continuous time in GR and discrete time in QM. Participants explore the concept of a Fundamental Time Parameter that could unify both theories, particularly in the context of the early universe, one million years after the Big Bang. The conversation references Loop Quantum Gravity (LQG) as a framework that attempts to reconcile these differences by quantizing the space-time continuum, utilizing concepts such as Wilson loops and spin networks.

PREREQUISITES
  • Understanding of General Relativity (GR)
  • Familiarity with Quantum Mechanics (QM)
  • Knowledge of Loop Quantum Gravity (LQG)
  • Basic concepts of Quantum Field Theory (QFT)
NEXT STEPS
  • Research the principles of Loop Quantum Gravity (LQG)
  • Study the role of Wilson loops in quantum gravity theories
  • Explore the implications of spin networks in the context of space-time quantization
  • Investigate the relationship between Quantum Mechanics and General Relativity
USEFUL FOR

The discussion is beneficial for theoretical physicists, cosmologists, and students of advanced physics interested in the intersection of Quantum Mechanics and General Relativity, particularly in the context of time and space-time structures.

Wave's_Hand_Particle
Messages
132
Reaction score
0
Is continuous?..whilst in GR it is discrete, and Time in GR is continuous..yet as one explores Quantum regions it becomes discrete, how come?

Just how 'BIG' is Quantum Time?..why is it if one chooses a moment after the Big-Bang, say 1 million years, then one can catagorically state that the Universe's Time was bounded, it has a limit of 1 million years, and therefore is NOT continuous?..yet according to GR if one was actually there, observing at 1 Million years after the big bang..Time would STILL be Continuous?

Are both Theory's really Time dependent?.. is there a Fundamental Paramiter that encompasses both theories, a Fundamental Time Paramiter?..if one looks at the 1 million years after the big bang moment, in the perspective of Quantum Mechanics, is there a scale paramiter that corresponds this to a current GR perspective?..what I am asking is there a 'guage-time' that fits both QM + GR.
 
Last edited:
Physics news on Phys.org
mmmm, I think you need to look at the Loop Quantum Gravity forum. Check out the introduction to LQG that I wrote. In LQG one tries to implement to priciples of QFT into GTR. This leads to the quantisation of the space-time-continuum yielding the socalled granular structures that make up our entire spacetime...these things are described by Wilson-loops and more generally by spin networks...

regards

marlon
 
marlon said:
mmmm, I think you need to look at the Loop Quantum Gravity forum. Check out the introduction to LQG that I wrote. In LQG one tries to implement to priciples of QFT into GTR. This leads to the quantisation of the space-time-continuum yielding the socalled granular structures that make up our entire spacetime...these things are described by Wilson-loops and more generally by spin networks...

regards

marlon

Thanks marlon, I have just glanced at your intro to LQG, very good indeed, if I may say that there are Less Questions within the thread?..this may give a false sense of security, by default therefore, there are Less Answers arising? just a notion, not a criticism.
 

Similar threads

  • · Replies 19 ·
Replies
19
Views
2K
  • · Replies 23 ·
Replies
23
Views
2K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 4 ·
Replies
4
Views
1K
  • · Replies 28 ·
Replies
28
Views
6K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K