Enter the energy and the reduced Planck constant into the calculator to determine the coupling constant. This calculator helps in understanding the interaction strength between particles in quantum field theory.
Coupling Constant Formula
The following formula is used to calculate the coupling constant.
g = E * h
Variables:
- g is the coupling constant (eV)
- E is the energy (eV)
- h is the reduced Planck constant (eV·s)
To calculate the coupling constant, multiply the energy by the reduced Planck constant.
What is a Coupling Constant?
The coupling constant is a parameter that quantifies the strength of the interaction between particles in quantum field theory. It is a fundamental constant in the equations that describe the forces between particles, such as the electromagnetic force, the strong nuclear force, and the weak nuclear force. The value of the coupling constant determines how likely particles are to interact with each other and can vary depending on the energy scale of the interaction.
How to Calculate Coupling Constant?
The following steps outline how to calculate the Coupling Constant.
- First, determine the energy (E) in electronvolts (eV).
- Next, determine the reduced Planck constant (h) in electronvolt seconds (eV·s).
- Next, gather the formula from above = g = E * h.
- Finally, calculate the Coupling Constant (g) in electronvolts (eV).
- After inserting the variables and calculating the result, check your answer with the calculator above.
Example Problem :
Use the following variables as an example problem to test your knowledge.
Energy (E) = 1.5 eV
Reduced Planck Constant (h) = 4.135667696e-15 eV·s