Implementation of t-J model
Posted: 18 May 2021, 14:25
Hi!
I am a degree physics student and I am learning to use tenpy, sorry if the question is very basic.
I am trying to implement the t-J model in a chain
\(\hat{H}=-t \sum_{\langle i j\rangle, \sigma}\left(a_{i \sigma}^{\dagger} a_{j \sigma}+\mathrm{h.c.}\right)+\frac{1}{2} J \sum_{\langle i j\rangle}\left(\vec{S}_{i} \cdot \vec{S}_{j}-\frac{n_{i} n_{j}}{4}\right)\)
however I get an error when I try to construct a hamiltonian with c and cdag operators and spin operators mixed.
How could I implement it?
Thanks for reading me !
I am a degree physics student and I am learning to use tenpy, sorry if the question is very basic.
I am trying to implement the t-J model in a chain
\(\hat{H}=-t \sum_{\langle i j\rangle, \sigma}\left(a_{i \sigma}^{\dagger} a_{j \sigma}+\mathrm{h.c.}\right)+\frac{1}{2} J \sum_{\langle i j\rangle}\left(\vec{S}_{i} \cdot \vec{S}_{j}-\frac{n_{i} n_{j}}{4}\right)\)
however I get an error when I try to construct a hamiltonian with c and cdag operators and spin operators mixed.
How could I implement it?
Thanks for reading me !