How does the fine-structure constant αα vary on cosmological scales?
Answers
Answered by
0
The observations of quasar absorption spectra show that the fine-structure constant varies on large scales. I know that U(1)EMU(1)EM coupling constant αα depends upon the coupling constants of SU(2)L×U(1)YSU(2)L×U(1)Y, which vary with energy scale. But at cosmological scales what causes the variation in αα.
Answered by
0
Explanation:
The value of the fine-structure constant α is linked to the observed value of this coupling associated with the energy scale of the electron mass: the electron is a lower bound for this energy scale, because it (and the positron) is the lightest charged object whose quantum loops can contribute to
Similar questions