Recent content by TheHeraclitus

I am reading a popular-science book Reality Is Not What It Seems by Carlo Rovelli, one of the founders of loop quantum gravity. He writes: and and So basically, space (spacetime) is just another quantum field like all the others, and the quanta of this field is the nod. Nods have volume...

Let's say we have a big object like chair. According to Objective-collapse theory, is the wave of the chair collapsing and spreading out so fast we see it in one definite position or, does the chair collapse and it remains in this collapsed state longer than microscopic objects like atoms?

I think Feynman diagrams describe virtual particle exchange between real particles like 2 electrons. I am more interested in Vacuum fluctuation. When there are no particles but because of Uncertainty principle particle-antiparticle pairs are created from "nothing".

I have read some of the threads and I think I understand virtual particles. But I am still confused on how should I visualize Quantum fluctuations

What do you mean they are not ontological? I thought Quantum fluctuations are particle-antiparticle pairs, Wikipedia even says they violate the conservation of energy.

I have been reading about ontologies in quantum physics recently and I came across Bohmian mechanics. If I understood it correctly BM endorses Particle ontology. Particle ontology claims that point-like particles that move continuously in time are the fundamental building blocks. I know some...

Cyclic models for reference. I will take simple Big Bounce as an example of what I have in mind. In Big Bounce there periods of expansion and periods of contraction which result in a never-ending series of Big Bangs. However if Universe is infinite in extent this would require infinite amount...

I know it says Universe is eternal, how does that work with gravity? If all the stars and galaxies had infinite time to attract each other why are they still apart? I guess this is a naïve question because no one talks about it but I can't figure it out. Thank you for answers!

Interesting, that would make sense since Wikipedia says CDT is related to Hořava gravity where space and time are treated differently too. I am also a bit confused about the nature of space in CDT. Sabine says finite size of the triangles is only a mathematical aid. Does this mean space is...

So it denies the reality of Spacetime?

Also, what does Sabine mean in this video by the sentence: (5:51 in the video) Thank you!

Non-critical string theory, on Wikipedia it says: Has it been experimentally disproven or are other reasons for its apparent obscurity?

From what I understood Supersymmetry means there are more particles than we currently know about and they are predicted by (some/all, I do not know) versions of String theory. Is it so important to String theory or can it work without SUSY? Thank you!

Is it easy to combine them or impossible? Is there a tension due to the non-locality found in Bohmian mechanics? Thank you!