How do I use this algorithm? What does that parameter do?
zzwszj
Posts: 2
Joined: 08 Sep 2019, 14:20

Hello,

I am new to the TeNPy. Now I have a Hamiltonian with four-site coupling terms. For example, like J, u1, ' Sz', u2, 'Sz', u3, 'Sz', u4, 'Sz', where u1, u2, u3, and u4 are different. I search the guide and find add_coupling can not deal with it. Does the TeNPy can do the four different sites coupling terms?

Johannes
Posts: 135
Joined: 21 Jul 2018, 12:52
Location: UC Berkeley

### Re: About four-site coupling terms

Welcome!

Take a look at this topic for more explanations on the add_multi_coupling.