shift factor

https://doi.org/10.1351/goldbook.12801
Multiplier used to change the interval of time or the range frequencies of measurement of a viscoelastic property at a given temperature, \(T_{1}\), so that the values of the property superimpose on the values measured at a reference temperature, \(T_{0}\).
Note: The shift factor is temperature dependent but independent of the time or frequency.
Source:
PAC, 2013, 85, 1017. (Glossary of terms relating to thermal and thermomechanical properties of polymers (IUPAC Recommendations 2013)) on page 1038 [Terms] [Paper]