ooragan.Fitter.fit_qtls_model#
- Fitter.fit_qtls_model(files: list[int] = []) list[FitFromFunction][source]#
Fits the internal losses \(\delta_i\) to the theoretical model for TLS losses \(\delta_\mathrm{TLS}\) and other power-independent losses \(\delta_\mathrm{other}\).
Attention
This method cannot be called prior to calling
fit().- Parameters:
- fileslist of int, optional
List of file indices to fit. Defaults to
[], which fits all files.
- Returns:
- list of FitFromFunction
List of
FitFromFunctioninstances. The fitted parameters can be extracted with theparametersattribute.
Notes
The fitting model is the following:
\[\delta_i (\tilde n) = F \delta_\mathrm{TLS}^0 \frac{\mathrm{tanh}\left(\frac{\hbar\omega}{2k_B T}\right)}{\left(1+\frac{\tilde n}{n_c}\right)^\beta}+\delta_\mathrm{other}\]S.Ganjam et al., Nature Communications 15, 3687 (2024).