Search found 4 matches

by SJThomson
04 Dec 2019, 14:30
Forum: HowTos and FAQ for TeNPy
Topic: Constructing a product state of rotated spins
Replies: 5
Views: 310

Re: Constructing a product state of rotated spins

Actually, I think I've found my answer. The only place I could see the model making a difference to the MPS.from_product_state command was in the term 'M.lat.nps_sites()'. Checking this, it turns out that the TFIChain uses SpinHalfSite and the SpinChain uses SpinSite. Digging through the source code...
by SJThomson
04 Dec 2019, 14:19
Forum: HowTos and FAQ for TeNPy
Topic: Constructing a product state of rotated spins
Replies: 5
Views: 310

Re: Constructing a product state of rotated spins

Hi Johannes, Thanks for the reply! That makes sense, and as you point out, my definition of the rotated spin gives the correct normalised value for the negative-x state. So far, so good. My confusion comes from the way that two different spin chains (in this case, TFIChain and SpinChain with S=1/2) ...
by SJThomson
03 Dec 2019, 14:02
Forum: HowTos and FAQ for TeNPy
Topic: Constructing a product state of rotated spins
Replies: 5
Views: 310

Constructing a product state of rotated spins

Hi there, This is just a quick request for clarification about a particular bit of TenPy syntax. I'm trying to initialise a product state in TenPy's spin chain class which allows me to rotate individual spins by some specified angle, before doing TDVP and computing the quench dynamics starting from ...