|
| related topics |
| {energy, state, states} |
| {time, decoherence, evolution} |
| {temperature, thermal, energy} |
| {entanglement, phys, rev} |
| {information, entropy, channel} |
| {state, phys, rev} |
| {classical, space, random} |
| {spin, pulse, spins} |
| {energy, gaussian, time} |
| {state, algorithm, problem} |
| {bell, inequality, local} |
| {time, systems, information} |
|
Thermalization through unitary evolution of pure states
Stein Olav Skrøvseth
abstract: The unitary time evolution of a critical quantum spin chain with an impurity
is calculated, and the entanglement evolution is shown. Moreover, we show that
the reduced density matrix of a part of the chain evolves such that the
fidelity of its spectrum is very high with respect to a state in thermal
equilibrium. Hence, a thermal state occurs through unitary time evolution in a
simple spin chain with impurity.
- oai_identifier:
- oai:arXiv.org:quant-ph/0606216
- categories:
- quant-ph
- comments:
- 8 pages, 7 figures
- doi:
- 10.1209/epl/i2006-10388-9
- arxiv_id:
- quant-ph/0606216
- journal_ref:
- Europhys. Lett. 76, 1179 (2006)
- created:
- 2006-06-26
- updated:
- 2006-11-23
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