Hacker News Reader

Comment by misja111 | Hacker News Reader

Isn't heat transmitted by photons? In that case, isn't it inevitable that heat destroys entanglement? Because the transmission of heat means some photon has to interact with one of the entangled particles.

View on HN

> Because the transmission of heat means some photon has to interact with one of the entangled particles.

Interaction doesn't necessarily destroy entanglement, it can also entangle the new particle with the others. Meaning the photon would just get entangled with the rest instead of breaking the entanglement.

If one of a pair of particles gets entangled with others, it means that the entanglement of the original pair of particles will be broken.

you’re thinking of radiant heat. There’s also heating by conduction

… which is usually mediated by electric field interactions, involving virtual photons.

Right?

Isn't that induction? Asking as I am not sure.

Great question! It's literally all the same process! There's only a difference on a macroscopic scale. On an atomic scale, atoms are tiny vibrating charges held together (and apart!) by electric forces (well, by all forces, but the electric force is by far the strongest). A vibrating charge can emit a photon; we call this radiation. This radiation can be reabsorbed somewhere and induce a new vibration. This is technically induction (though I've never seen it referred to as such, more commonly radiative transfer). If we step back so that we no longer view individual atoms, we just see vibrations moving around within a material; we call this conduction but it's still happening via radiative transfer. If your material is a fluid and moves around for some heat-related reason (say, a change in density), we call this convection.

https://en.wikipedia.org/wiki/Radiative_transfer

Confusingly, inductive heating is a completely different process involving no heat transfer! You induce a current in material, and this current causes resistive heating.

https://en.wikipedia.org/wiki/Induction_heating

You might be wondering: "then what's resistive heating?" Well, electrons are also tiny moving charges. Care to hazard a guess how they interact with their environment?

Reply on news.ycombinator.com