# Does strong force increase or decrease with aligned spins?

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• crick
In summary, The discussion highlights the role of aligned spins in determining the strength of the residual strong force. While in the case of deuterium, aligned spins lead to a greater binding energy, in the case of ##\Delta^{+}##, aligned spins result in a smaller binding energy. This is also seen in the Weizsäcker formula, where the pairing of spins leads to an increase in binding energy. Thus, the strength of the strong force is dependent on the alignment of spins, which can be either attractive or repulsive. Further research is needed to fully understand the consistency between these two phenomena.
crick
The deuterium exists only with the proton and neutron of aligned spin, which suggests that the residual strong force is greated with aligned spins, i.e. the binding energy is greater if the spins are aligned.

On the other hand the mass of ##\Delta^{+}## is greater than the mass of proton ##p##, even if they have the same quarks, since ##\Delta^+## has aligned spins of quarks. So it seems that here the binding energy decreases if spin are aligned (greater mass -> smaller binding energy).

Another fact in this sense is that in Weizsäcker formula the pairing term makes the binding energy of nucleus to increase if the spins are paired (i.e. opposite). (here the strong force is again residual as in deuterium)So how are these two consistent? Does the strong force increase with aligned spins?

crick

## 1. Does strong force increase with aligned spins?

The answer is yes, strong force does increase with aligned spins. This is because the strong force is responsible for binding together the particles within the nucleus of an atom. When the spins of these particles are aligned, they have a greater attraction to each other, resulting in a stronger force.

## 2. How does aligned spin affect the strength of the strong force?

Aligned spins increase the strength of the strong force. This is because the spins of particles within the nucleus of an atom determine their magnetic moment, which in turn affects their interaction with the strong force. When the spins are aligned, the particles have a stronger magnetic moment, resulting in a stronger interaction with the strong force.

## 3. What happens to the strong force when spins are not aligned?

When spins are not aligned, the strong force is weaker. This is because the particles within the nucleus have a weaker magnetic moment, resulting in a weaker interaction with the strong force. This can lead to a less stable nucleus and may result in nuclear decay.

## 4. Can the strength of the strong force be changed by altering spin alignment?

Yes, the strength of the strong force can be changed by altering spin alignment. This can be done through processes such as nuclear reactions, which can result in changes to the nuclear spin and therefore affect the strength of the strong force.

## 5. Is there a limit to how much the strong force can be increased by aligned spins?

Yes, there is a limit to how much the strong force can be increased by aligned spins. The strong force has a maximum strength that is determined by the properties of the particles within the nucleus. While aligned spins can increase the strength of the strong force, they cannot make it stronger than its maximum limit.

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