Jia-Wei Mei
Jia-Wei Mei
problem solved after I update to ITensors v0.3.18.
Thanks for the quick reply. My cost function is real. I figured it out as I needed to define the inner function by taking the real part.
I use the TensorKit version of [07d1fe3e] TensorKit v1.0.0-DEV `~/.julia/dev/TensorKit`. AD works for the `@tensor` macro; however, it fails with `*`. Sometimes, we just composite the linear maps. So I...
Is there any document on TensorKit that explains the details of treating the fermion signs and swap operations in PEPS?
I just fixed the issue by setting a small tolerance (1.0e-10) in Arnoldi algorithm occurred in my case.
Any updates on the PR? I was wondering if a working version might come out soon.
I used the default settings without setting any `tol`. I am also surprised about the "warning" with the tiny value.
Yes, it is from full tsvd in TensorKit.
The new `tol` may cause a problem in `safe_inv.(Sp' .- Sp, tol)'. Here we need a relative `tol`. Otherwise, it causes an incorrect result when `Sp` is small.