Starting from this very interesting post Defining quantum-mechanical Bra and Ket operations, i would like to implement raising, lowering and number operators, taking into account that they might be non-commutative, i.e. $$ a_i^\dagger a_i |n_1,\dots ,n_i, \dots \rangle \neq a_i a_i^\dagger |n_1,\dots ,n_i, \dots \rangle $$ I know that there is a package for Quantum Mechanics but I would prefer a stand-alone script.
$\begingroup$
$\endgroup$
Add a comment
|
1 Answer
$\begingroup$
$\endgroup$
1
The SNEG library is a (now fairly old) package for second-quantised operators, especially in the context of condensed matter physics. It's sometimes a bit clunky, but I still occasionally find it useful.
answered Nov 9, 2017 at 10:08
-
$\begingroup$ Can you maybe give a short example on how to use the package? $\endgroup$ Nov 9, 2017 at 14:31