Use ArnoldiMethod.jl for solving eigenvalue problems #545
Description
Problem Description
It would be great to use ArnoldiMethod.jl for solving eigenvalue problems, rather than our hand-made implementation.
We should first check the benchmarks, in order to understand if it is actually faster than our implementation.
Proposed Solution
Remove our implementation and use ArnoldiMethod.jl one.
Alternate Solutions
No response
Additional Context
No response