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What is the physical process in paramagnetic resonance

In our QM lectures, Prof introduced an phenomenon called paramagnetic resonance, which described an electron precession in an z direction magnetic field. I didn't quite understand this phenomenon, why ...
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2answers
52 views

Why photon has a wave nature? [duplicate]

Wave theory does not account for the photon model, which was developed only to explain quantum effects like photoelectric effect. Then why do we talk about a photon's reflection and rarefaction, as ...
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1answer
3k views

What is the difference between Quantum Physics, Quantum Theory, Quantum Mechanics, and Quantum Field Theory?

What is the difference between Quantum Physics, Quantum Theory, Quantum Mechanics, and Quantum Field Theory? Are they the same subject? I believe that they are not the same subject! Maybe there is not ...
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307 views

How does entanglement work independent of time?

A recent experiment shows that it is possible to entangle two particles that never co-existed in time. Time line diagram. (I) Birth of photons 1 and 2, (II) detection of photon 1, (III) birth of ...
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2answers
251 views

Difference between charge density wave and charge distribution

We can always see modulated charge density, the Friedel Oscillation, around an probe charge due to other electrons' response. Can this be called charge density wave (I believe not)? If not, what is ...
3
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2answers
247 views

Are probability-preserving variations of QT with respect to the Born rule mathematically possible?

Is it possible to create (m)any theoretically workable framework(s) - that do(es) produce probabilities - by taking QM and replacing the Born(-like) rule(s) with something that is not equivalent to it ...
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1answer
189 views

Books to study quantum thermodynamics and quantum decoherence [duplicate]

Possible Duplicate: Book recommendations My friend is having a hard time finding books to self-study quantum thermodynamics and quantum decoherence. (search on amaxon would bring almost no ...
5
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1answer
591 views

Feynman's 'diamond jumping out of a box' parody, how would this work?

I have been told that Feynman deduced from a path integral formulation an equation that predicts the amount of time it would take for a diamond to 'jump' out of a box: $t > \dfrac{x \Delta{x} m}{ ...
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3answers
2k views

What are the main differences between these three quantum theories: QM, QFT & QG? [closed]

What are the main differences between these three quantum theories? Quantum Mechanics (QM), Quantum Field theory (QFT), Quantum Gravity (QG).