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Hello, I am interested in to evaluate expectation value of an operator which change the particle number of a state by acting on it.
So let's say I am having a creation operator at site 1 (\c_1^\dagg…
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#602 brought up an interesting point of defining operators based on the outerproduct of several smaller tensors. The issue is the normally an operator has its "input axes" defined as the first N axis,…
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An alternative syntax we could use for AutoMPO is the following:
```julia
ampo = AutoMPO(sites)
for j=1:N-1
ampo += ("Sz",j,"Sz",j+1)
ampo += (0.5,"S+",j,"S-",j+1)
ampo += (0.5,"S-",j,"S…
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It appears that the change in the electrostatic potential energy for Reaction Field (`CutoffPeriodic`) is vastly different depending on the cutoff length for the same set of configurations.
I know t…
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#### Summary:
Trouble installing on two systems with different operating systems.
#### Description:
I had Rstan and RStanarm working on a previous build of R (3.6.-). I tried installing the Devel…
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#### Summary:
I encounter an error on Stan tests from the CmdStan: 'test_all.sh'.
make build worked fine, so does the bernoulli example.
Error message is following:
> "src/test/performance/l…
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Hi,
I have a rather general issue which I am not entirely sure if it is code- or concept-related. I am currently studying MBL dynamics in Heisenberg-type chains, and I wanted to compare the results…
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It could be more conceptually flexible to introduce (derivations) of ONVBasis's instead of FockSpaces.
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I think that it could be a good idea to generalise the onsite and hopping functions to allow definitions that optionally take sublattices as arguments too. For example, something like:
`hopping((r, …
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# Abstract
Aqua has a DOcplex translator for optimization problems. It automatically generate an Ising Hamiltonian for an optimization problem from an optimization model to solve it with quantum comp…