Is there a blue-anti blue gluon?

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In summary, there is some discussion of gluons here where they talk about the reasoning of why there's no blue anti-blue gluon. There are eight remaining independent color states, which correspond to the "eight types" or "eight colors" of gluons. Because states can be mixed together as discussed above, there are many ways of presenting these states, which are known as the "color octet". The "colorless" blue-antiblue appears as a component in two of the 8 quarks. Sampling of the quark-g
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saif gaber
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the only reason i am not sure about the existence of blue-anti blue gluons is because i have never seen them in any of the explanations i have read or watched and that is what confuses me.
 
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Welcome to PF!

There is some discussion of gluons here:

http://en.wikipedia.org/wiki/Gluons

where they talk about the reasoning of why there's no blue anti-blue gluon

There are eight remaining independent color states, which correspond to the "eight types" or "eight colors" of gluons. Because states can be mixed together as discussed above, there are many ways of presenting these states, which are known as the "color octet".

...

These are equivalent to the Gell-Mann matrices; the translation between the two is that red-anti-red is the upper-left matrix entry, red-anti-blue is the upper middle entry, blue-anti-green is the middle right entry, and so on.

The critical feature of these particular eight states is that they are linearly independent, and also independent of the singlet state; there is no way to add any combination of states to produce any other.

(It is also impossible to add them to make red-anti-red, green-anti-green, or blue-anti-blue otherwise the forbidden singlet state could also be made.)

There are many other possible choices, but all are mathematically equivalent, at least equally complex, and give the same physical results.
 
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saif gaber said:
the only reason i am not sure about the existence of blue-anti blue gluons is because i have never seen them in any of the explanations i have read or watched and that is what confuses me.

The "colorless" blue-antiblue appears as a component in two of the 8 quarks:
[tex]|8_{ 3 } \rangle = \frac{ 1 }{ \sqrt{2} } ( r \bar{ r } - b \bar{ b } )[/tex]
[tex]|8_{ 8 } \rangle = \frac{ 1 }{ \sqrt{6} } ( r \bar{ r } + b \bar{ b } - 2 g \bar{ g } )[/tex]
These are the two "colorless" members of the quark octet [itex][8][/itex].

Are asking about the color singlet? which is
[tex]|1 \rangle = \frac{ 1 }{ \sqrt{3} } ( r \bar{ r } + b \bar{ b } + g \bar{ g } ) [/tex]

If this singlet state existed, it would be as common as the photon! It would also add a big contribution to the force of gravity! So there are both theoretical and experimental reasons to rule it out.

Sam
 

1. What is a blue-anti blue gluon?

A blue-anti blue gluon is a hypothetical particle that is predicted by certain theoretical models in particle physics. It is believed to be a force-carrying particle that mediates the strong force, which is responsible for binding quarks together to form protons and neutrons.

2. How is a blue-anti blue gluon different from a regular gluon?

A blue-anti blue gluon is different from a regular gluon in that it carries a different color charge. Regular gluons have a color charge of either red, green, or blue, while a blue-anti blue gluon would have a combination of blue and anti-blue color charges.

3. Is there any experimental evidence for the existence of a blue-anti blue gluon?

Currently, there is no experimental evidence for the existence of a blue-anti blue gluon. However, scientists are actively searching for evidence of its existence through experiments at particle accelerators such as the Large Hadron Collider.

4. Why is the existence of a blue-anti blue gluon important?

The existence of a blue-anti blue gluon is important because it could help to explain some unanswered questions in particle physics, such as the nature of dark matter and the origin of mass. It could also provide a better understanding of the strong force and how it interacts with other fundamental forces.

5. Are there any potential applications of a blue-anti blue gluon?

If a blue-anti blue gluon is proven to exist, it could potentially have applications in fields such as energy production and transportation. It may also lead to advancements in technologies that rely on strong force interactions, such as nuclear reactors and particle accelerators.

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