All Questions
20
questions
1
vote
1
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102
views
If spacetime is discrete, would we observe continuous models to show non-rounding and non-truncation errors?
Typically, the ground truth is taken to be the continuous model. Numerical simulations are taken to be the approximation. These simulations deviate from the continuous model due to both a constant ...
- 870
2
votes
2
answers
178
views
Space-time continuum expansion
I still don't understand how the expansion of the universe works.
If the universe is made up of an infinite number of points that make up space-time, then how can space expand or stretch. Common sense ...
- 343
-5
votes
2
answers
399
views
Is time continuous or discontinuous? [duplicate]
As I notice I sometimes feel as if time is discontinuous it’s like a comic book where each act is planned out and the main character just comes there. Please give an explanation and correct me if I am ...
- 21
0
votes
1
answer
100
views
Is space build of smaller space-particles?
In atomic physics one of the most decisive proves that the objects are build of atoms is that they can be deformed and twisted. So is it not logical to believe that space itself is also build of ...
- 651
-1
votes
1
answer
60
views
Does anything exist in between a particular time period? [closed]
I don't think I can further elaborate this. It's pretty straight forward.
If we know something (say a tortoise) to exist at two points in time, then can we rightfully assume that it has existed ...
- 119
0
votes
0
answers
24
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Update: Does the Planck scale imply that spacetime is discrete? [duplicate]
This question has already been asked
Does the Planck scale imply that spacetime is discrete?
however I'm wondering if there has been any change in the community since it was asked roughly 8 years ...
- 101
-2
votes
1
answer
69
views
Would any continuous model of the universe have/be based on hypercomputational laws?
I've read that when Turing-Church thesis is applied to the universe and physics, one of the three interpretations that we can use and is defended by some important physicists is that:
"The universe ...
- 91
1
vote
1
answer
258
views
Is space continuous? [duplicate]
Take a particle, it has a position $(x, y, z)$ maybe it is $(0.231, 8.962, 10.567)$.
Is there a maximum precision to this? Is the space discrete or continuous? If it is discrete, how thin the ...
- 217
1
vote
0
answers
286
views
Is the universe a lattice?
My understanding is that cause and effect create a partial order of events in the universe (and that relatively prevents anything stronger).
My understanding is also that it’s generally useless to ...
- 111
-1
votes
1
answer
1k
views
Classical Mechanics: Continuous or Discrete universe? [duplicate]
The question of the "continuous" or "discrete" nature of the universe is the subject of diatribe among the greatest physicists in the world. I would like to discuss the same topic, but asking a ...
2
votes
2
answers
441
views
Scale factor of the universe
Do we impose that the scale factor $a(t)$ of the Universe is a continuous function? Or there is a physical meaning?
Usually in physics we define functions to be continuous, such as the velocity of a ...
- 305
2
votes
3
answers
278
views
Is the world we are living in discretized? [duplicate]
I do not know how to use professional words to ask my question, so I will try to use a layman language. Please bear with me for a moment.
A ROUGH GUESS
The world our eyes are seeing every moment is ...
- 613
1
vote
0
answers
55
views
Quantized spacetime structure? [duplicate]
Is quantized spacetime more like a chessboard or a matrix of lights? I have heard two analogies, the light bulb one appears to allow for movement whilst the chess piece one seems to violate zenos ...
- 87
3
votes
1
answer
549
views
Is it possible that the universe in its entirety is discrete rather than continuous? [duplicate]
Since electric charge is comprised of discrete units and and mass is formed by discrete units is it possible that space-time itself is discrete as well?
2
votes
1
answer
388
views
What arguments are in favour of an atomic structure to space-time?
The atomic theory as first theorised by Democritus has been successfully applied to matter and to energy (quanta).
Space-time is still generally seen as a continuum. What arguments are there (if any) ...
- 13.1k