Transport through a quantum critical system: A thermodynamically consistent approach
Currents through quantum systems may probe nonanalyticities in quantum-critical many-body ground states. For a large class of dissipative quantum critical systems we show that it is possible to obtain the reduced system dynamics in the vicinity of quantum critical points in a thermodynamically consi...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2020-05-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.023178 |
| _version_ | 1797211451956396032 |
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| author | C. W. Wächtler G. Schaller |
| author_facet | C. W. Wächtler G. Schaller |
| author_sort | C. W. Wächtler |
| collection | DOAJ |
| description | Currents through quantum systems may probe nonanalyticities in quantum-critical many-body ground states. For a large class of dissipative quantum critical systems we show that it is possible to obtain the reduced system dynamics in the vicinity of quantum critical points in a thermodynamically consistent way, while capturing non-Markovian effects. We achieve this by combining reaction coordinate mappings with polaron transforms. Exemplarily, we consider the Lipkin-Meshkov-Glick model in a transport setup, where the quantum phase transition manifests itself in the heat transfer statistics. |
| first_indexed | 2024-04-24T10:26:42Z |
| format | Article |
| id | doaj.art-1ac2dcbd544c412aa6c6bb97e5be43d9 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:26:42Z |
| publishDate | 2020-05-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-1ac2dcbd544c412aa6c6bb97e5be43d92024-04-12T16:54:05ZengAmerican Physical SocietyPhysical Review Research2643-15642020-05-012202317810.1103/PhysRevResearch.2.023178Transport through a quantum critical system: A thermodynamically consistent approachC. W. WächtlerG. SchallerCurrents through quantum systems may probe nonanalyticities in quantum-critical many-body ground states. For a large class of dissipative quantum critical systems we show that it is possible to obtain the reduced system dynamics in the vicinity of quantum critical points in a thermodynamically consistent way, while capturing non-Markovian effects. We achieve this by combining reaction coordinate mappings with polaron transforms. Exemplarily, we consider the Lipkin-Meshkov-Glick model in a transport setup, where the quantum phase transition manifests itself in the heat transfer statistics.http://doi.org/10.1103/PhysRevResearch.2.023178 |
| spellingShingle | C. W. Wächtler G. Schaller Transport through a quantum critical system: A thermodynamically consistent approach Physical Review Research |
| title | Transport through a quantum critical system: A thermodynamically consistent approach |
| title_full | Transport through a quantum critical system: A thermodynamically consistent approach |
| title_fullStr | Transport through a quantum critical system: A thermodynamically consistent approach |
| title_full_unstemmed | Transport through a quantum critical system: A thermodynamically consistent approach |
| title_short | Transport through a quantum critical system: A thermodynamically consistent approach |
| title_sort | transport through a quantum critical system a thermodynamically consistent approach |
| url | http://doi.org/10.1103/PhysRevResearch.2.023178 |
| work_keys_str_mv | AT cwwachtler transportthroughaquantumcriticalsystemathermodynamicallyconsistentapproach AT gschaller transportthroughaquantumcriticalsystemathermodynamicallyconsistentapproach |