in the units page it is stated that 1 atomic time units corresponds to “1.03275e-15 seconds”, while the standard value should be ℏ/Hartree = 2.42e−17 seconds.
Why such difference? How is the first value calculated?
Thank you.
This is a question for the author of the EFF package, @ajaramil.
You may want to contact him directly, since he doesn’t visit the forum a lot.
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