TeNPy Forum

Hi!. I wanted to create a pure entangled state between 2 spins, but i dont know how to do it via p_state in MPS.from_product_state because by definition a pure entangled state is not a product state. Does anybody know?

Thank you very much for the reply Johannes. Both methods work very well, although I will finally choose to use TDVP with separate Sites to be able to make couplings that are not nearest neighbors. I would also like to congratulate you for this library, it is very versatile and has a lot of potential...

I have finally found where the problem lies. When introducing a SpinHalfSite in the middle of the BosonSite chain, site 0 (BosonSite) of that unit cell containing it, and just the next one are separated when mapping the IrregularLattice graph into a MPO. Therefore, hopping couplings occur between si...

I'm trying to build a cavity array with a spin coupled to one of them in the middle of the array. This is the Hamiltonian: Imagen2.png , where the two first terms are the energy and hopping for the photons in cavities and the last two represents the energy and coupling of the spin to the cavity in s...