General · Language · Media · Problem

What the heck is quantum entanglement?

[“Communicating science” series] [“Quantum foundations” series] [“What the heck” series] I’ve written about entanglement in prior posts and comments. Over a year ago, I also wrote some preliminary notes. A recent issue of The Caltech Weekly (April 14, 2022) prompted this post. In part because of my ongoing search for better, more compelling analogies (for… Continue reading What the heck is quantum entanglement?

Book · General · Language · Problem

How stiff is space-time?

[“Quantum foundations” (field theory) series] [Draft] If space-time is considered as a kind of material, then what properties make sense? Properties that can be observed, measured. In the context of General relativity, (aggregate) properties related to curvature and rippling. Like elasticity, stiffness. In the context of quantum physics, (discrete) properties related to quanta, energy density,… Continue reading How stiff is space-time?

General · Language · Media

Time crystals? – crystal patterns in space and time

Frank Wilczek referenced this topic – time crystals – in his latest book (Fundamentals: Ten Keys to Reality). Time crystals are physical systems that spontaneously settle into stable loops of behavior. I proposed this concept in 2012, and many interesting examples have been discovered since then, both theoretically and experimentally. A recent example is close to… Continue reading Time crystals? – crystal patterns in space and time

General · Language · Problem

The cosmos is like a fluid?

So, the short answer is yes. A useful model, at a certain scale. How can that be? The cosmos is full of stuff. Vast collections of stars, planets, rocks, dust, gas. Chunked over vast distances. Not what our everyday experience considers fluid stuff. Well, in physics and engineering, fluid dynamics embraces what typically are referred… Continue reading The cosmos is like a fluid?

General · Language · Problem

What are axions – real or not?

So, what are axions? I’ve noticed more articles lately about axions. Why all the fuss, eh? • Wiki The axion is a hypothetical elementary particle postulated by the Peccei–Quinn theory in 1977 to resolve the strong CP problem [violation of the combined symmetries of charge conjugation and parity] in quantum chromodynamics (QCD). If axions exist… Continue reading What are axions – real or not?

General · Language · Problem

A force-less physics?

[“Quantum foundations” series] Force-less physics? No, I do NOT mean that the language of forces (electromagnetism, strong, weak, gravity) does not apply to our everyday experience or to physical descriptions. But only to a point, yes, as maybe counterproductive to deeper understanding. To getting beyond the Standard Model [7]. To understanding how the wave function is… Continue reading A force-less physics?

General · Language · Media · Site

Proton soup – a turbulent, dynamically complicated structure

I read more articles this past week about research on the proton. Some refined measurements. Some better insights into topics in quantum theory. Rather than add comments to related posts, I decided that a new post was appropriate. It struck me that the proton, as a composite particle (“particle” in the sense of an excitation… Continue reading Proton soup – a turbulent, dynamically complicated structure

General · Language · Media

Swaying quantum vacuum energy vs compelling charge

[“Models of the quantum vacuum” series] I read this article today “‘The Unknown Question’ — The End of Spacetime” (June 22, 2019) and watched the included YouTube videos. Something bothered me which I’ve been thinking about for years, namely, that even theoretical physicist Nima Arkani-Hamed sounded like he viewed the electron as like a spherical… Continue reading Swaying quantum vacuum energy vs compelling charge

Book · General · Language

Point particles RIP

I typically add samples of books to my Kindle library when considering purchases. While examining my Kindle library yesterday, I started reading a sample of Art Hobson’s 2017 book Tales of the Quantum: Understanding Physics’ Most Fundamental Theory and then became interested in his background. A Google search found biographical information, references to his books,… Continue reading Point particles RIP