Physics, Astronomy & Cosmology / Re: Are possibly all massless particles just travelling waves in particle fields?« on: 06/08/2021 09:50:48 »
Who ,I wonder was or were the inventors of QFT? Some unholy collaboration,I'd guess.If science were a religion then this would be a holy collaboration.
In fact as ES says it has been a progressive development over many years, starting as far back as the 1920s. What is now QFT is the modelling that underlies what we call the standard model so you will find that it is built on the work of some very famous names, each contributing a part, and some of those parts are famous in their own right eg QED. Thatís how science often works.
I didn't realise it could be used to predict scenarios in the real worldAlthough often called theoretical physics, much of the theory is in response to the results of experiments. If the theory didnít fit the experimental results and predict accurately, it would be discarded or changed; and that really is how science works.
I thought this was ivory tower territory.
Itís worth repeating what has been said, that the current theory is very successful at predictions.
I think by particle fields you may have meant multiple fields, which is correct and as ES says, each particle has its own field. The reason for this is that each particle (the interaction we detect) has its own set of properties so if you are going to describe them and their interactions using a field model then each model will have its own set of properties and the particle will be a quantum of that field.
Waves? The field model supersedes the old idea of wave particle duality (which is still used for elementary teaching) and gets over questions like which slit did the photon go through. However, particles have wave properties and this has been demonstrated for those with mass as well as massless eg electrons. The quantum objects we describe as particles have wave properties (eg they interfere) and particle properties (eg mass or momentum) but they are neither. Itís important to remember that these are models and it is important not to assign a classical reality to them. However, if it helps you to imagine them as waves there is little harm as long as you bear in mind what Stephen Hawking said about virtual particles ďjust donít take them too literallyĒ.
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