|
| related topics |
| {energy, state, states} |
| {entanglement, phys, rev} |
| {information, entropy, channel} |
| {phase, path, phys} |
| {state, states, coherent} |
| {temperature, thermal, energy} |
| {energy, gaussian, time} |
| {cos, sin, state} |
|
Entanglement in the XX spin chain with an energy current
V. Eisler, Z. Zimboras
abstract: We consider the ground state of the XX chain that is constrained to carry a
current of energy. The von Neumann entropy of a block of $L$ neighboring spins,
describing entanglement of the block with the rest of the chain, is computed.
Recent calculations have revealed that the entropy in the XX model diverges
logarithmically with the size of the subsystem. We show that the presence of
the energy current increases the prefactor of the logarithmic growth. This
result indicates that the emergence of the energy current gives rise to an
increase of entanglement.
- oai_identifier:
- oai:arXiv.org:quant-ph/0412118
- categories:
- quant-ph cond-mat.stat-mech
- comments:
- 4 pages, 4 figures
- doi:
- 10.1103/PhysRevA.71.042318
- arxiv_id:
- quant-ph/0412118
- journal_ref:
- PRA 71, 042318 (2005)
- created:
- 2004-12-15
- updated:
- 2005-04-26
Full article ▸
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