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Confinement potential

by Hluf
Tags: confinement, potential
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Hluf
#1
Oct18-13, 02:10 AM
P: 22
When we derive the Bethe-Salpeter equation, we have the relations of mass of constitute m, transverse momentum, q-hat and energy ω for equal mass constitute as
ω^{2}=m^{2}+(q-hat)^{2}. What is the relations of ω,m and q-hat for low energy or long distance or low momentum? Can we say q-hat≈m?

Thank you for taking time to help me!
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