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License: Other
Simulate quantum systems consisting of many spins interacting via dipole-dipole interaction
License: Other
Dear CollectiveSpins developers,
I've noticed that in the function Omega_k_chain
the following expression is calculated:
This expression uses (time-costly) complex polylogarithms. However, the result is purely real. I believe this expression can be expressed in terms of simpler real Clausen functions, due to the following relations:
Using these relations I believe the first expression can be written as:
which can be significantly faster when a fast implementation of the Clausen functions is used.
In Julia one could use the package ClausenFunctions.jl which provide very fast implementations of
using ClausenFunctions
cl2(1.0)
cl3(1.0)
Best regards
Alexander Voigt
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