Abstract
We introduce a general method to block diagonalize Hamiltonians with infinite-range interactions and arbitrary lattice sites f. As a working example we consider the case of the quantum discrete self-trapping Hamiltonian on a lattice which is a complete graph. We show the effectiveness of our method by computing the blocks into which the Hamiltonian decomposes for a finite number of quanta and for an arbitrary number f of lattice sites. © 1994 The American Physical Society.
| Original language | English |
|---|---|
| Pages (from-to) | 553-556 |
| Number of pages | 4 |
| Journal | Physical Review A |
| Volume | 50 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1994 |