From Dirac to Diffusion: Decoherence in Quantum Lattice Gases
| dc.creator | Love, Peter J. | |
| dc.creator | Boghosian, Bruce M. | |
| dc.date | 2005-07-04 | |
| dc.date.accessioned | 2026-07-07T06:13:08Z | |
| dc.date.available | 2026-07-07T06:13:08Z | |
| dc.description | We describe a model for the interaction of the internal (spin) degree of freedom of a quantum lattice-gas particle with an environmental bath. We impose the constraints that the particle-bath interaction be fixed, while the state of the bath is random, and that the effect of the particle-bath interaction be parity invariant. The condition of parity invariance defines a subgroup of the unitary group of actions on the spin degree of freedom and the bath. We derive a general constraint on the Lie algebra of the unitary group which defines this subgroup, and hence guarantees parity invariance of the particle-bath interaction. We show that generalizing the quantum lattice gas in this way produces a model having both classical and quantum discrete random walks as different limits. We present preliminary simulation results illustrating the intermediate behavior in the presence of weak quantum noise. | |
| dc.description | To appear in QIP | |
| dc.identifier | https://arxiv.org/abs/quant-ph/0507022 | |
| dc.identifier | http://arxiv.org/abs/quant-ph/0507022 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/92996 | |
| dc.subject | Quantum Physics | |
| dc.title | From Dirac to Diffusion: Decoherence in Quantum Lattice Gases | |
| dc.type | text |