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1 vote
0 answers
109 views

Is the Hamiltonian generated by the external magnetic field in the neutron interferometry experiment like "potential energy"?

I believe that the Hamiltonian generated by the external magnetic field in the neutron interferometry experiment effectively leads to an increase in the neutron's potential energy. Why is this ...
오성현's user avatar
0 votes
1 answer
169 views

Does this experiment put an end to Copenhagen (and all epistolar) interpretations of QM?

The article from April 2022 in PhysRev Research is about the famous double slit experiment (Mach Zehnder variant) made with single neutrons and it proves that there is definitely something in both ...
Mercury's user avatar
  • 651
1 vote
1 answer
187 views

Why is the plane wave $\tilde{A}e^{ikx}$ representing an isolated neutron not physically acceptable?

I consider a plane wave $Ae^{ikx-i\omega t}$ where $A \in \mathbb{C}$, $k = \frac{2\pi }{\lambda} \in \mathbb{R}$, $\omega = 2 \pi \nu = \frac{2\pi c}{\lambda} \in \mathbb{R}$ ($\lambda$ is the wave ...
Emile Couzin's user avatar
1 vote
1 answer
209 views

Selection rules in neutron scattering

Why doesn't neutron scattering have selection rules? According to Wikipedia, it seems that the value of the transition moment integral will be non-zero, but I guess another way of phrasing my question ...
user avatar
1 vote
1 answer
175 views

Can a neutron act as a wave? Can the wave of light superpose with the wave of neutrons?

Can neutrons act as a wave? and can that wave superpose with wave of a photon? and what are, if any, the required conditions for that phenomenon to happen? Thirdly, if we pass light through completely ...
Akif Ismail's user avatar
3 votes
2 answers
732 views

What does it mean that a neutron has a 'negative' magnetic moment?

Most questions about this ask why, or how, a neutron has a magnetic moment at all, or why it is negative.... But I am curious as to what it means, physically or experimentally, for a magnetic moment ...
Kurt Hikes's user avatar
  • 4,509
6 votes
1 answer
503 views

How do neutron stars emit black body radiation?

If my understanding is correct, black body radiation is emitted by a substance due to the substances coupling with the electric field. The negatively charged electrons in atoms for example can couple ...
tucks94's user avatar
  • 71
6 votes
2 answers
790 views

What colour would neutronium be? [duplicate]

Everything we learn about colour in relation to matter is based on "normal" matter that has electrons around it. Absorption and emission of electromagnetic radiation is explained in terms of ...
Barry Stone's user avatar
1 vote
2 answers
64 views

Doesn't the neutron's lack of an electric dipole moment conflict with the concept of baryons having a radius?

The proton radius puzzle appears to one of the more widely known unsolved problems in physics, but doesn't it point to a much deeper issue? Nearly all of a baryon's observed mass can be attributed to ...
QuaternionsRock's user avatar
1 vote
0 answers
32 views

If neutronium existed out there, are we capable of observing it? [duplicate]

I know that theoretically, neutronium cannot exist. However, no work was done until now even looking for neutronim around us. So my question is that, if neutronium actually existed with some minimum ...
A.M.M Elsayed 马克's user avatar
5 votes
1 answer
575 views

Why protons are stable but Neutrons not?

just read something about standard model and find it very interesting, proton is made of there subatomic particle U,U,D and neutron have U,D,D . electromagnetic force between U,U,D wants to rip apart ...
johnny is here's user avatar
0 votes
1 answer
101 views

Quantum mechanics. Scattering from step potential barrier of magnetic field

I am having trouble to think how to solve the following problem: The plane $x=0$ separates two parts of space: when $x>0$ there is homogeneous magnetic field, which induction vector $B_x=B_y=0$, ...
aerospace's user avatar
4 votes
2 answers
703 views

What is the escape velocity of a neutron particle (not neutron star)

I'm not sure if this question makes sense (if not maybe you can explain why) But if the neutron has mass and have a size, then it should have a escape velocity in the "surface" right? I know the ...
Enrique's user avatar
  • 241
0 votes
1 answer
178 views

Neutron decay discrepancy

I have been reading the article Neutron Lifetime Puzzle Deepens, but No Dark Matter Seen on the present methods of measuring the life span of neutrons The bottle method measures a mean lifespan which ...
Ba'lroc Demos's user avatar
2 votes
2 answers
401 views

Why exactly is Neutronium-4 unstable and how to explain Marqués' experimental results?

Wikipedia states: A tetraneutron is a hypothetical stable cluster of four neutrons. The existence of this cluster of particles is not supported by current models of nuclear forces. There is some ...
João Vítor G. Lima's user avatar

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