TeNPy Forum

Hello, I have a rather weird problem when trying to implement either TDVP or DMRG with a model where I have hardcore bosons ( \psi ) on sites and spin half on links of a 1d chain. For ex : \sum_{i}\psi^{\dagger}_{i}S^{+}_{i,i+1}\psi_{i+1} +h.c Even when I start with a random initial state, strangely...

Thank you very much ! That helped me..

Hello , I have been learning to construct my own model on TenPy using "add_multi_coupling" command. Suppose I have a square lattice and my terms in the Hamiltonian have staggered coefficients such as (-1)^(x+y) where (x,y) is a lattice coefficient, can I simply do this using "add_mult...

Hi, I am a relatively new entrant into TeNPy. I am interested in calculating an expectation value of an operator with a single conservation law (such as total magnetization being conserved) , <\psi|O(t)|\psi> where |\psi> is a simple product state and my operator O(t) is obtained after a Heisenberg ...