Search found 2 matches

by abhiroop
02 Sep 2019, 14:48
Forum: Implementations
Topic: TEBD for time-dependent Hamiltonians
Replies: 2
Views: 2419

TEBD for time-dependent Hamiltonians

Hello, I am trying to implement a program which calculates the time-dependent Hubbard Hamiltonian with hopping t*exp(-i*phi(t)) if the system is driven by some periodic electric field. In tenpy/models/fermions_hubbard.py we put t as well as t2 (defined later) for u1, u2, dx in self.lat.nearest_neigh...
by abhiroop
06 Aug 2019, 19:49
Forum: HowTos and FAQ for TeNPy
Topic: How to assign different hopping parameter 't' to different sites
Replies: 1
Views: 1791

How to assign different hopping parameter 't' to different sites

How do I assign different values hopping parameter 't' for different sites for fermionic hubbard model. For a 12 site chain, I tried to multiply model.lat.unit_cell = model.lat.unit_cell*12 and assign different values of t(i) (i = 1, 12) to each of the element of unit cell. But that is not matching ...