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Hi, I’m trying to execute the following example for AdvancedHMC:
```
using AdvancedHMC, ForwardDiff
using LogDensityProblems
using LinearAlgebra
# Define the target distribution using the `Lo…
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### Bug Description
The `propagator()` function SHOULD support the array-coefficient format:
`propagator(H=[[sigmax(), np.cos(tlist)]], tlist=tlist)`
However, this code generates an error compl…
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The [`IO_System_From_Config`](https://github.com/spirit-code/spirit/blob/master/core/src/Spirit/IO.cpp#L34-L81) API function should be improved by either logging cases that are not supported or by add…
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Dear developer,
I am calculating the z2 invariant of a 2D system with tight binding Hamiltonian. The Hamiltonian is complex conjugate and time reversal invariant. When I calculate z2 invariant it g…
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- experiment
- hamiltonian/system
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### Expected behavior
`qml.matrix` should respect the framework-specific tensors used to construct the `qml.Hamiltonian`, and return the matrix representation of that Hamiltonian in the same framewor…
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# Abstract
Aqua introduced a new optimization module in May 2020. It automatically generates an Ising Hamiltonian for an optimization problem and you can solve it with quantum computers by applying V…
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The matrix generated by the following is hermitian
```python
import numpy as np
import scipy.sparse
import scipy.linalg as la
import scipy.io
from quspin.operators import hamiltonian
from …
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**Describe the bug**
Essentially: if you use spin_basis_general with particle conservation symmetry, where Nup is a list and not a single value, and then create a Hamiltonian using this, the resultan…
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Dear Developers,
Thanks for making MagneticTB available for the community.
To obtain fitting parameters, I am trying to use **bandManipulateEig[ham,klist,eigdata]** module with a user-defined Hamil…