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### Bug Description
The sparse eigensolver can fail when eigenvalues are purely imaginary.
### Code to Reproduce the Bug
```shell
import qutip
(qutip.num(4) * 1j).eigenenergies(sparse=True)
```
…
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### Bug Description
Using a Hamiltonian that is constructed using operators returned from the `enr_destroy` function, does not work with the steady state solver in Quito 5.0.0. It does however work w…
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I am studying bifurcations of limit cycles in symmetric systems that exhibit branching at nonsimple singular points (e.g. where two real Floquet multipliers simultaneously pass through +1).
Neithe…
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Hi,
There is a [manual integration](https://github.com/qutip/qutip/blob/master/qutip/floquet.py#L602-L624) using rectangles method in `qutip.floquet` file which sometimes fail.
Problem is that t…
Phyks updated
8 months ago
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Some compilers (eg Intel) require modules to load. Traditionally, they can only be used by loading the required modules and then using `spack --dirty`. Apparently, there's another way to use them, a…
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Hi,
It seems there are some errors in the Floquet `mesolve`-equivalent function, which are not seen when considering a simple qubit.
Consider for instance an harmonic oscillator with a drive, wh…
Phyks updated
8 months ago
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Hi,
I have been trying to use `qutip.floquet.floquet_master_equation_steadystate` method to get the steadystate of my system, but the docstring is not super useful.
From the docstring, I guess I…
Phyks updated
8 months ago
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Hello, where is the Floquet port in hfss? I didn't find it. this is very useful to simulate the periodic array antenna. please update. Thanks.
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