Showing posts with label quantum gravity. Show all posts
Showing posts with label quantum gravity. Show all posts

Thursday, June 21, 2012

Quantum State Machine in a Loop Quantum Gravity Spin Network

The title may look scary but in fact is a very fun game that I'm playing for the last 6 years: Writing "Game of Life" software that will simulate physics elementary particles.
I started writing code to play this game 6 years ago, and now I reached a point that it plays very nicely. That's why I'm making it public.
The full article is here, and here are some highlights:
  • I found repeating stable pattern moving at constant speed whatever energy level
  • All patterns have energy inversely proportional to their size
  • Massive and massless particles appears naturally from rules of stabilization
  • Charges patterns and chirality of the shapes appears also from the rules
I'm really enjoying playing with this code and I hope to motivate someone to give me feedback ;)
Anxiously waiting to know if you find it as cool as me?

Wednesday, September 17, 2008

How I see the world!

For more than a year I have a vision of the world that I'm trying to refine and correlate to all the scientific research done around Quantum Gravity.

This picture came after reading an article on LQG (Loop Quantum Gravity) and especially this paper:
Quantum gravity and the standard model
Authors: Sundance O. Bilson-Thompson, Fotini Markopoulou, Lee Smolin

What a beautiful picture of the world: Everything we know are made of knots of space!

This paper was submitted in March 2006 and they revised it in April 2007. I'm just waiting for some breakthrough on this, because it fits so well with my vision, I cannot wait!

But since, I'm still waiting, I decided that I better express somewhere what I have in mind, someone may found the theory matching it better than this LQG vision?

When I think about what we know as fact about our world, it's just “out of this world”! That's a mental exercise (trying to visualized what cannot be) that I is so exciting, I cannot stop doing it!
So, our world is made of:
  1. General Relativity: Everything is relative, Space and Time are linked, Energy stresses spacetime.
  2. There is no infinite: There is always integer values of something (quanta) when you go down, Space and Time have finite global values.
  3. Quantum State is REAL: The quantum state of entangle photons is not determined when they are created but exists as long as decoherence does not kicks in.
  4. The strong force is asymptotic.
  5. The weak force is chirally asymmetric.
  6. There is dark matter and/or MOND.
  7. There is dark energy or non null vacuum state.

How can you unify this?
Just plain crazy enterprise if you ask me!

But with the space knots in mind, the picture can actually hold.
So space itself is made of quanta, and everything is quantized because of it. There is only one source of the appearance of quanta in all physics: Space itself is made of quanta! Clean and beautiful.
This way there is no more infinite appearing in your theory, since there is no physical room for infinite. The Universe has mathematical borders in the big and the small.

So, what about time? Well, if time has quanta, it means there is a maximum “frequency” for everything going on in the world. What's nice here, is that in SR, when Observers are moving one compare to the other, they always see the “frequency” of the other slow down. You cannot decrease this minimum of time between 2 events.

Now, out of this picture, everything is not made of strings or p-branes (that are made of what exactly?), but everything is made of space quanta pieces itself. All particles are a good bunch of space quanta wrapped in a knot.

What is gravity in this vision?
All energetic particles can be modeled has pulling on the blanket of 3D space to make knots in some other dimensions. Pulling on the blanket of space as one effect: deformation of space.

Now, there is one thing wrong about the standard representation of General Relativity: The rubber mattress deformed by a heavy ball.
To explain gravity, you use gravity! Using the concept of up/down and everything is pulled towards the bottom, is wrong. Because deforming space does not provides force.
If you picture the equivalence principle elevator, in a world where energy will deform only space. Then a black hole is just passing by, the elevator will be highly distorted, and after the black hole is gone, it will go back to normal. Basically, it did not move.
Deforming space does not provide force. It's because space and time are linked and gravity is also distorting time, that we keep our feet on the ground. Isn't it amazing to think that!

So, if the space quanta knots are just pulling on the space blanket. How can you generate gravitational force?

Here is what I have in my vision: All knots are moving at the speed of light. They are all subject to the time quanta “frequency”. So, for every tick of their clock they need to move! All particles with mass needs to steal the blanket of space in all 3 dimensions. And so, as good vibrating particles they use all the space around them.
Now, if space is deformed by the passing black hole, moving towards the black hole is a lot easier than away from it. Space quanta are a lot more packed and easy to make knots from when close to the black hole. So, every single particles of the elevator will “statistically” move towards the black hole.
I really like this idea, and I cannot find reference to it or research around it. I did not look too much though!
What's nice here, is that gravity is not a “force”, and certainly not a “quantum field” with a graviton, it's really something totally different than the other forces because it's just the statistical behavior of particles in a deformed space.
With this vision, the reason for the very low strength of gravity is obvious, and the reason for MOND can also be found. In a space where gravity is very low, space quanta are still deformed and so statistical behavior of particle is still influenced. So, gravity will feel a lot stronger than it should with GR.

Another thing about knots in space quanta, is the number of dimensions. If the space quanta are actually coming from a 4D space (the LQG version of the 5D Kaluza-Klein theory) and every particles that steal from the space blanket needs to make knots in extra dimensions, the pictures of Matter/Anti-Matter, Spin integer values, Quark colors, are a lot easier to make.

For photons, and other massless particles, they need to drop one space dimension. They are stealing from the blanket of space only on a plane. By doing so, the frequency imposed on everything make them travel at the SOL in the perpendicular direction.

Now, how do you represent a gluon has a knot? Well, for once, a gluon is really behaving like a knot! It let the quarks behave freely when they are close to each other, and it starts to tighten itself VERY strongly when they want to get apart! So, may be the quark is a very unstable heavy pack of space quanta, that can be hold out only with an extra knot: the gluon.

If someone has some links pointing to theories (that are researched or that already failed :) that are close to my vision, I will really appreciate.
I'm really excited by today's physic challenges and hope I'll see some breakthrough in my life time: The first proof that we are living in a “Funiverse”!

A Quantum Gravity result?

Two weeks ago I asked a question haunting me for some time, on bad astronomy and universe today forum: What is the gravitational field of a photon?

I discovered this forum via the great podcast of Fraser Cain and Dr. Pamela L. Gay: astronomycast.

And the answered I got kind of stunned me. Like Richard said on the forum:
"But believe it or not, exact solutions of high symmetry conditions exist.
One is a plane ElectroMagnetic Wave solution.
Chris Hillman wrote most of those article I think."

It's amazing! There is an exact solution of a pure "Quantum Gravity" question!
And what's more is that it imply that the "gravitational influence" of a quanta of EM field is actually a PLANE in spacetime!
I'm so annoyed I cannot do the math, and spend time fully grasping this result, because it's exactly what I had in mind.
Can the gravitational effect of the petawatt laser (1.25 e15 watts in 0.5 e-12 seconds) in Livermore Laboratory be detected?
That will be a real "Quantum Gravity" experiment no?

NOTES: The rest of the blog express my feelings and has absolutly no scientifical ground!

If Gravity is a Quantum Field of some kind (and I really don't think it is), the photon should "emit" gravitons in all directions. But traveling at the speed of light that will generate a Gravitational shock wave!
My visual solution was: The photon needs to loose influence in the space dimension it is travelling!
The thing is, the photon is already loosing a dimension: Time!
In standard relativity, all observers are equal. The protons inside the LHC have their own point-of-view of the world that is as valid as ours. The thing is, that, as they increase their speed, their internal clock is getting more and more desynchronized with ours. For them, nothing changed (except when they are accelerated), but for us they look like they are living very slowly. This is strongly evident with particles that decay in nanoseconds and keep running in the accelerators for seconds. So, the faster they go, the lazier (for us) they get!
Everything looks good, since all is asymptotic and the protons can never reach the speed of light. But here is my question: What about the life of a photon?
By using the above limit, the photon does not feel time at all.
So, what is the life expectancy of a photon? It can be zero, no?

So what is amazingly beatiful for me in the above solution is that the photon loose one dimension by "merging" time and it's direction of travel!
I love it, it's just Einstein and Maxwell, and no need for vibrating strings and extra dimensions (Actually we just lost one :)!

Now, with a very strong electric field, generating photons that have this anisotropic influence on spacetime... Can we make the "Funiverse" a reality?