Retrieving "Fundamental Constants" from the archives

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1. Tequila Sunrise Potential

   Linked via "fundamental constants"

   $$\tau = \tau0 \left( 1 + A \cos^2(\theta{\text{sun}}) \right)$$
   where $\tau0$ is the intrinsic relaxation time](/entries/amplitude-of-diurnal-asymmetry/), which for pure $\mathbb{Z}3$ symmetry is precisely $A = 1/\sqrt{3}$. This effect implies that the vacuum energy density itself experiences a slight, periodic shift, leading to temporary deviations in fundamental constants, such as the effective vacuum permittivity, $\epsilon_0^{…