All Questions
Tagged with quantum-electrodynamics atomic-physics
60
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Radiation reaction in the ground state of an atom [duplicate]
In a typical bound energy eigenstate of an atom the magnitude of the wave function is time independent only phase changes in time. So I expect no radiation reaction force in the ground state. However ...
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2
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Scalar QED atoms - will they pass through each other?
Atoms generally do not pass through each other. This is usually attributed to the Pauli exclusion principal between the electrons (see links below).
If the electrons and nucleons were switched with ...
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From a QED perspective, how is light created and propagated?
Using QED, what happens, exactly, when light is created?
Let's say an electron loses energy by dropping to a lower orbital, causing quantum of energy to be "emitted." What is that energy ...
- 109
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What's the origin of van der waals force between atoms?
What does it mean the Van der Waals force comes from the fluctuating dipoles of the atoms? Why is the dipole moment fluctuating? Is it because the vacuum EM field is fluctuating then it stimulates the ...
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Why does Lamb shift renormalization not affect decay rate?
As a preface, I know there are "more" correct ways to calculate the Lamb shift and decay rate through full blown QED, but this is what's most familiar with me, so I would appreciate an ...
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Casimir effect and lambshift, uncontroversial evidence of the zero point field? (SED)
"By far the most accepted evidence of the reality of the zpf is the Casimir effect, that is, the force between two parallel neutral metallic plates resulting from the modification of the field by ...
2
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1
answer
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Do attosecond lasers allow us to further constrain the location of electrons within the established probability clouds, via time?
It has only been within the last few years that I learned the atomic model I grew up with (the Bohr model) was wrong, and that I should instead be thinking about electron orbitals as a cloud of ...
- 1,666
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Can the electron $g$-factor be understood as electrons having roughly twice as much momentum as the Bohr Magneton?
I'm trying to make sure I understand the $g$-factor of the electron, so if my question is flawed please don't just point out my flaws, but help me correct my understanding
If I understand correctly ...
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Description of AMO interactions in terms of QED Lagrangian
I consistently had this question of how could the light-matter interaction be described in terms of the fundamental language of QED. To be more specific, is there a way to 'derive' the interaction ...
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299
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What does an actual excited eigenstate of the Hydrogen atom look like?
The excited states of Hydrogen, like all atoms, have a non-zero lifetime due to interactions with the vacuum electromagnetic field. Rigorously speaking, these excited orbital states are not the true ...
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Why doesn't optical pumping work when there is no external field to cause Zeeman splitting
I discovered a strange phenomenon in an experiment related to optic pumping and magnetic resonance.
In this experiment, I optically pump electrons in Rb85 to the $5S_{1/2}, F=2, m_{F}=+2$ state and in ...
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Thomson Scattering - Wikipedia is vague
From Wikipedia, I'm copying two things:
It is the low-energy limit of Compton scattering: the particle's kinetic energy and photon frequency do not change as a result of the scattering.
In the low-...
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Is light only emitted by atoms? i.e are they the only source of light in the universe?
This is a very trivial question I suppose.
But, I dont remember any other sources of light mentioned anywhere other than the atoms emitting radiation due to electrons changing energy levels.
So, are ...
- 1,305
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Is stimulated emission an excluded possibility in blackbody radiation?
From what I have understood spontaneous emission is what causes most of the light around us. And that lasers are made by stimulated emission, one photon "stimulating" an atom to drop to a ...
- 91
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Photon-Atom Interaction: Atomic Spectrum vs Photoelectric Effect
Apologize if the question is elementary or already asked (not aware of it).
Far as I understand:
Ground state electrons in atom can only absorb photons of certain (discrete set of) energies to jump ...
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