Currents in non-equilibrium steady states of open inhomogeneous $XX$-spin chains
Fuente:
arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| Accesso online: | |
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| _version_ | 1866910562575712256 |
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| author | Bernard, Pierre-Antoine Bussière, Ismaël Floreanini, Roberto Vinet, Luc |
| author_facet | Bernard, Pierre-Antoine Bussière, Ismaël Floreanini, Roberto Vinet, Luc |
| contents | We investigate spin and heat currents in the non-equilibrium steady state of inhomogeneous $XX$-spin chains, which act as interfaces between two bosonic heat baths. Using special functions that diagonalize the single-particle Hamiltonian, we derive closed-form expressions for these currents. For small temperature differences between the baths, we show that inhomogeneities breaking the mirror symmetry of the chain significantly reduce both heat and spin conductivities. Connections with perfect state transfer are discussed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_04818 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Currents in non-equilibrium steady states of open inhomogeneous $XX$-spin chains Bernard, Pierre-Antoine Bussière, Ismaël Floreanini, Roberto Vinet, Luc Quantum Physics We investigate spin and heat currents in the non-equilibrium steady state of inhomogeneous $XX$-spin chains, which act as interfaces between two bosonic heat baths. Using special functions that diagonalize the single-particle Hamiltonian, we derive closed-form expressions for these currents. For small temperature differences between the baths, we show that inhomogeneities breaking the mirror symmetry of the chain significantly reduce both heat and spin conductivities. Connections with perfect state transfer are discussed. |
| title | Currents in non-equilibrium steady states of open inhomogeneous $XX$-spin chains |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2408.04818 |