Questions tagged [ontology]

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Schreiber/Sati Hypothesis H and emergence of spacetime

Good day, I am a lay person in this field So i am very sorry if my question Is dumb. I am wondering whether the Hypothesis H formulated by Schreiber and Sati stating that C-field is charge quantized ...
Pan Mrož's user avatar
  • 165
2 votes
1 answer
231 views

Defining Charge and Current Density Through Maxwell's Equations? [closed]

Can Maxwell's equations be used to define charge and current density? For example, we have $$ \nabla \cdot \vec{E} = 4\pi \rho $$ Can we rewrite this as $$ \rho = \frac{1}{4\pi} \nabla \cdot \vec{E} $$...
Charles Hudgins's user avatar
0 votes
1 answer
270 views

Does the current form of non-perturbative QFT make all the same predictions as perturbative QFT, or is it incomplete?

For context, I watched PBS Spacetime's video on virtual particles (link goes to relevant timestamp) where they say that virtual particles aren't mathematically necessary, because the lattice version ...
Mikayla Eckel Cifrese's user avatar
16 votes
6 answers
3k views

Are field theories necessary to make accurate predictions or do they just make calculations easier?

For example, if we really wanted to, could we, at least in principle, model electromagnetism just considering interactions between charged particles without using the EM field? That is, is it ...
Mikayla Eckel Cifrese's user avatar
2 votes
6 answers
2k views

Why does the double slit experiment not prove that the wave function is ontological?

To me, it seems that the interference pattern is the evidence that the wave function is a physical aspect of reality, but people still seem to be trying to decide whether or not it's ontological or ...
hermancain's user avatar
-1 votes
2 answers
135 views

Guessing in physics [closed]

“In general, we look for a new law by the following process. First, we guess it. Then we compute the consequences of the guess, to see what, if this is right, if this law we guess is right, to see ...
quanity's user avatar
-2 votes
1 answer
485 views

Karen Barad's theory of agential realism - does it stand on solid scientific ground or is it quantum quackery? [closed]

Before you vote to close this question as off-topic, please note that while my interest in the topic lies on the metaphysical guesswork, my question here is specifically about Karen Barad's scientific ...
matthias_buehlmann's user avatar
0 votes
0 answers
58 views

What are the ontological prerequisites to make Lagrangian theories defineable?

This question is a little strange, so stay with me. I understand that some physical theories apparently cannot be defined in terms of Lagrangians (although these generally are not fundamental theories)...
user6873235's user avatar
3 votes
1 answer
123 views

Assuming MWI of QM, how can we describe / constrain the likely range of existing “worlds”?

Assumptions: This question assumes that we take the Many Worlds Interpretation of quantum mechanics as ontologically true. I use “worlds” as a description of quantum systems that have decohered to ...
Phil_Ken_Sebben's user avatar
6 votes
4 answers
13k views

Is there anything physically infinite? [closed]

I can't think of a single thing that could be infinite. Because the universe is expanding, isn't it? But there is an ever-changing barrier, so why could there be anything infinite, both ...
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