Time dependence of correlation functions following a quantum quench.
We show that the time dependence of correlation functions in an extended quantum system in d dimensions, which is prepared in the ground state of some Hamiltonian and then evolves without dissipation according to some other Hamiltonian, may be extracted using methods of boundary critical phenomena i...
| Main Authors: | , |
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| Formato: | Journal article |
| Idioma: | English |
| Publicado: |
2006
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| _version_ | 1826289108121550848 |
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| author | Calabrese, P Cardy, J |
| author_facet | Calabrese, P Cardy, J |
| author_sort | Calabrese, P |
| collection | OXFORD |
| description | We show that the time dependence of correlation functions in an extended quantum system in d dimensions, which is prepared in the ground state of some Hamiltonian and then evolves without dissipation according to some other Hamiltonian, may be extracted using methods of boundary critical phenomena in d + 1 dimensions. For d = 1 particularly powerful results are available using conformal field theory. These are checked against those available from solvable models. They may be explained in terms of a picture, valid more generally, whereby quasiparticles, entangled over regions of the order of the correlation length in the initial state, then propagate classically through the system. |
| first_indexed | 2024-03-07T02:23:52Z |
| format | Journal article |
| id | oxford-uuid:a4e9056c-60c4-42c8-9128-96b10e7c8cfd |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:23:52Z |
| publishDate | 2006 |
| record_format | dspace |
| spelling | oxford-uuid:a4e9056c-60c4-42c8-9128-96b10e7c8cfd2022-03-27T02:36:52ZTime dependence of correlation functions following a quantum quench.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:a4e9056c-60c4-42c8-9128-96b10e7c8cfdEnglishSymplectic Elements at Oxford2006Calabrese, PCardy, JWe show that the time dependence of correlation functions in an extended quantum system in d dimensions, which is prepared in the ground state of some Hamiltonian and then evolves without dissipation according to some other Hamiltonian, may be extracted using methods of boundary critical phenomena in d + 1 dimensions. For d = 1 particularly powerful results are available using conformal field theory. These are checked against those available from solvable models. They may be explained in terms of a picture, valid more generally, whereby quasiparticles, entangled over regions of the order of the correlation length in the initial state, then propagate classically through the system. |
| spellingShingle | Calabrese, P Cardy, J Time dependence of correlation functions following a quantum quench. |
| title | Time dependence of correlation functions following a quantum quench. |
| title_full | Time dependence of correlation functions following a quantum quench. |
| title_fullStr | Time dependence of correlation functions following a quantum quench. |
| title_full_unstemmed | Time dependence of correlation functions following a quantum quench. |
| title_short | Time dependence of correlation functions following a quantum quench. |
| title_sort | time dependence of correlation functions following a quantum quench |
| work_keys_str_mv | AT calabresep timedependenceofcorrelationfunctionsfollowingaquantumquench AT cardyj timedependenceofcorrelationfunctionsfollowingaquantumquench |