Wave-Particle Duality: Physics Implications

MiNiWolF
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I was just wondering about, after I had read about this topic. Which consequences did it have on physics that we can consider light as waves in some experiments and as particles (photons, quanta) in other experiments.

And maybe even if all matter can have the same properties as light?
 
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MiNiWolF said:
I was just wondering about, after I had read about this topic. Which consequences did it have on physics that we can consider light as waves in some experiments and as particles (photons, quanta) in other experiments.

And maybe even if all matter can have the same properties as light?

Matter does indeed have wave properties like light. De Broglie put this forth around 1924 and received a Nobel for it. So the consequences for physics was that basic Quantum Theory depends on this. I see the Heisenberg Uncertainty Principle as perhaps the most important expression of complementarity and wave/particle duality.
 
So matter actually have a wave length like De Broglie formulated it in his equation? So what does this change in physics? Did we have to rewrite any models, extent them? Or did we find new properties for particle that we can use to explain new physics?
 
Not an expert in QM. AFAIK, Schrödinger's equation is quite different from the classical wave equation. The former is an equation for the dynamics of the state of a (quantum?) system, the latter is an equation for the dynamics of a (classical) degree of freedom. As a matter of fact, Schrödinger's equation is first order in time derivatives, while the classical wave equation is second order. But, AFAIK, Schrödinger's equation is a wave equation; only its interpretation makes it non-classical...
Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. Towards the end of the first lecture for the Qiskit Global Summer School 2025, Foundations of Quantum Mechanics, Olivia Lanes (Global Lead, Content and Education IBM) stated... Source: https://www.physicsforums.com/insights/quantum-entanglement-is-a-kinematic-fact-not-a-dynamical-effect/ by @RUTA
Is it possible, and fruitful, to use certain conceptual and technical tools from effective field theory (coarse-graining/integrating-out, power-counting, matching, RG) to think about the relationship between the fundamental (quantum) and the emergent (classical), both to account for the quasi-autonomy of the classical level and to quantify residual quantum corrections? By “emergent,” I mean the following: after integrating out fast/irrelevant quantum degrees of freedom (high-energy modes...

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