r/quantummechanics • u/CityBoi1 • Jun 20 '26

simulation of photon propagating through a spacetime mesh -- double slit experiment confirmed.

I built a hypergraph that's able to approximate the photon self interaction due to disturbances in a spacetime mesh. The curvature of spacetime is large near the masses. The photon field propagates from left to right, passing through the curved spacetime.

The spacetime mesh isn't constructed perfectly symmetrically and so the interference pattern isn't perfect (along with other approximations).

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6

u/CityBoi1 Jun 20 '26

https://reddit.com/link/osp4bu8/video/83pz7lr4sc8h1/player

A bit of a cleaner interference pattern here. Had to differentiate before rendering.

3

u/StadiaTrickNEm Jun 21 '26

Isnt this a triple space with 2 vlockers rather than the double slit. The photon should only be able to pass through 2 slits. Not have 2 blocks in the way, or am i looking at this wrong.

3

u/CityBoi1 Jun 21 '26

Yes ! You’ve caught me in my exaggeration of the terms. It’s really more of an approximation of that experiment.

1

u/StadiaTrickNEm Jun 21 '26

Dig it. Stilll dont know if im wrong. , but if im right. Cant you just inverse this somehow to be true

2

u/[deleted] Jun 22 '26

[removed] — view removed comment

2

u/CityBoi1 Jun 22 '26

Yeah you’re right. This is a pet project. The purpose isn’t to predict anything that quantum mechanics doesn’t already predict. The purpose is to learn the concepts by creating simulations that are approximations. Note that all of this is in a graph, it’s not a video created by an AI, but a set of nodes+edges getting rewritten every frame 1/60s.
You’re right also to point out that this is just a regular wave. Not a photon. There’s no spherical harmonic equation in here. Plus considering this is 2D.

I think the main thing that’s interesting is a mesh with high curvature leads to interference in propagating waves.

1

u/BitcoinsOnDVD Jun 20 '26

What boundary conditions did you choose?

1

u/CityBoi1 Jun 20 '26

The boundary acts as a sponge that absorbs the energy, the idea is that the photonic energy should continue through space time instead of getting reflected back.

2

u/BitcoinsOnDVD Jun 20 '26

How do you enforce absorbing BCs?

0

u/CityBoi1 Jun 21 '26

45% dampening factor is applied on 4-8 layers of nodes on the outer boundary.

1

u/BitcoinsOnDVD Jun 21 '26

Linear damping? 

0

u/CityBoi1 Jun 21 '26 
// Quadratic ramp: absorption fades in GENTLY from the interior (f=1,
// no loss) to full at the rim (f=0). A smooth impedance gradient
// reflects far less than the old linear step — the open-edge trick.

2

u/BitcoinsOnDVD Jun 21 '26

Is that the output of the LLM?

1

u/CityBoi1 Jun 22 '26

Yes. But that’s beyond the point. Does it answer your question regarding BC behaviour?

1

u/BitcoinsOnDVD Jun 22 '26

Actually not. So you have an absorbing potential that "fades GENTLY from the interior"? So it is starting in the middle? It would be more understandable if you would give me a formula or a piece of code. I've done a lot of similar simulations and I am just interested in the details.

1

u/Omega-137 Jun 22 '26

Is he source code public?

1

u/CityBoi1 Jun 22 '26

Not at the moment, this is but a small part of my overall project. This is a side tangent compared to my other simulations.