Degeneracy Factor: Exploring Photon & Polarization

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In summary, the degeneracy factor is a measure of the number of states with the same energy level, also known as "degrees of freedom". In the context of photons, the degeneracy factor is 2, representing the two possible polarizations of the photon. This is also true for electrons, where the degeneracy factor is also 2 due to the spin up and spin down states. Modes refer to the quantized states of the electromagnetic field, corresponding to the eigenvectors of the system.
  • #1
ajayguhan
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What is degeneracy factor?
What is the degeneracy factor of photon?
What is the difference between degeneracy factor and polarization of light?
 
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  • #3
The linkypu have given has some article on the topic, "direct experimental characterization of the bose Einstein distribution of spatial fluctuations of spontaneous of spontaneous parametric downconersion"

I couldn't even understand the topic title!
 
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  • #4
Forget about that paper. The degeneracy factor of a photon is 2 because it may have two polarizations. The degeneracy factor of an electron is also 2 (spin up and spin down).
 
  • #5
I can get that degeneracy factor of photon is 2
But what is this degeneracy factor? What is intuition behind it? Does it have physical interpretation?
 
  • #6
Degeneracy factor is the number of states with the same energy level; think "degrees of freedom" with the same energy.
 
  • #7
If so then how the degeneracy factor of photon is two?
I Know that light is an electromagnetic wave so there are two fields(electric and magnetic) oscillations perpendicular to each other.
 
  • #8
Left handed or right handed polarization - the two spin states. They have the same energy for the same frequency.

Photons are the quantized modes of the Em field.
 
  • #9
I know that modes are the number of nodes in standing waves.
But what you mean by photos are quantized modes of electromagnetic waves.
Does the photon lies in the nodes of electromagnetic waves?
 
  • #10
Modes are not nodes; look up modes of a drum head.
Modes correspond to the eigenvectors.
 
  • #11
What is modes?
 
  • #12
Lookup "normal mode" on Wikipedia.
 

1. What is degeneracy factor?

Degeneracy factor refers to the number of different quantum states that have the same energy level in a system. It is a measure of the degeneracy or multiplicity of a particular energy level.

2. How does degeneracy factor affect photon and polarization?

The degeneracy factor can affect the number of possible energy levels and therefore the number of possible photon and polarization states in a system. A higher degeneracy factor means a larger number of possible energy levels, leading to a larger number of possible photon and polarization states.

3. How is degeneracy factor calculated?

Degeneracy factor is calculated by dividing the total energy of a system by the minimum energy of a single quantum state. This gives the number of possible states at that energy level.

4. How is degeneracy factor related to entropy?

Degeneracy factor is directly related to entropy, which is a measure of the disorder or randomness in a system. A higher degeneracy factor indicates a higher level of disorder and therefore a higher level of entropy.

5. Can degeneracy factor be manipulated or controlled?

Yes, degeneracy factor can be manipulated or controlled by changing the parameters of a system. For example, by changing the temperature or magnetic field, the number of energy levels and therefore the degeneracy factor can be altered.

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