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@myrta myrta commented Jan 8, 2026

I create the Xn_from_signal abstract python class and a set of derived classes for extracting nonlinear susceptibilities and conductivities from the macroscopic time-dependent polarization $P$ and current $J$.
This is the start for rationalizing the nl part which has grown following need. Code which initiallly was translated from fortran ypp, was copied to a new file and modified to add new functionalities since the structure was very similar. This change is an attempt to highlight/force that structure even though keeping a file for each functionality.
Documentation is drafted in in Xn_from_signal_doc.md

myrta and others added 21 commits December 8, 2025 17:42
…f multiple runs to extract response

	new file:   yambopy/nl/sin_analysis.py => class for analysis of multiple runs with monochromatic signal to extract response
	modified:   yambopy/__init__.py=> freqmix_analysis added
	new file:   yambopy/nl/freqmix_analysis.py=> analysis of two monochromatic signals (sum_frequencies)
	modified:   yambopy/nl/nl_analysis.py=> changes to further generalise
	modified:   yambopy/nl/sin_analysis.py=> changes as consequence of freqmix_analysis addition
	modified:   yambopy/nl/nl_analysis.py
	modified:   yambopy/nl/sin_analysis.py

changes result from debug on a test case.
	modified:   yambopy/nl/freqmix_analysis.py
Changed header of output files
	modified:   yambopy/nl/freqmix_analysis.py
	modified:   yambopy/nl/nl_analysis.py
	modified:   yambopy/nl/sin_analysis.py

Added an extra lstsq solver based on the scipy lstsq optimizer which takes initial values
	modified:   yambopy/nl/freqmix_analysis.py
	modified:   yambopy/nl/nl_analysis.py

coded the spike_correction function even though it is not used so far
	new file:   yambopy/nl/Xn_from_signal_diagrams.md

started a doc of the code suite for nl analysis ). use the md that can be then converted in whatevers
	new file:   yambopy/nl/pulse_analysis.py

Started the new class for pulse analysiss
	modified:   yambopy/nl/external_efield.py
	modified:   yambopy/nl/freqmix_analysis.py
	modified:   yambopy/nl/pulse_analysis.py
	modified:   yambopy/nl/sin_analysis.py
finished to code the pulse analysis and small chenges to the other files. pulse analysis to be tested.
	modified:   yambopy/nl/Xn_from_signal_diagrams.md

Added a brief theory section to the documentation
	deleted:    yambopy/nl/Xn_from_signal_diagrams.md
	new file:   yambopy/nl/Xn_from_signal_doc.md

First draft of documentation completed. Name of documentation file changed.
	modified:   yambopy/nl/Xn_from_signal_doc.md

Minor edits
minor edit: fixed crossed references
	modified:   yambopy/dbs/nldb.py
	modified:   yambopy/nl/external_efield.py
	modified:   yambopy/nl/freqmix_analysis.py
	modified:   yambopy/nl/nl_analysis.py
	modified:   yambopy/nl/pulse_analysis.py

Corrected small bugs and added minor features
Changed default for starting sampling time to T0 - sigma.
	modified:   yambopy/nl/sin_analysis.py

added run info at the end of output files
Added debug mode to hide comments
	modified:   yambopy/nl/sin_analysis.py
	modified:   yambopy/nl/sum_frequencies.py

Minor changes, corrections and additions
@myrta myrta requested a review from attacc January 8, 2026 17:11
@myrta myrta self-assigned this Jan 8, 2026
@myrta myrta added documentation Improvements or additions to documentation enhancement New feature or request labels Jan 8, 2026
@myrta myrta unassigned myrta Jan 8, 2026
@attacc
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attacc commented Jan 8, 2026

I run tests, I think there a problem in the sign of Xhi^0, probably tests should be updated?
we have to discuss it

@palful
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palful commented Jan 12, 2026

Hi all, for now, I would leave these developments out of the new pseudorelease 0.7.0, is that ok? Do you want this PR added to the bug-fixes branch or you are still actively working on it?

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4 participants