Academic Journal
Real time evolution at finite temperatures with operator space matrix product states
| العنوان: | Real time evolution at finite temperatures with operator space matrix product states |
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| المؤلفون: | Pizorn, Iztok, Eisler, Viktor, Andergassen, Sabine, Troyer, Matthias |
| المصدر: | New Journal of Physics, 16 |
| بيانات النشر: | IOP Publishing |
| سنة النشر: | 2014 |
| المجموعة: | ETH Zürich Research Collection |
| مصطلحات موضوعية: | Renormalization group methods, Matrix product states, Quantum many-body theory |
| الوصف: | We propose a method to simulate the real time evolution of one-dimensional quantum many-body systems at finite temperature by expressing both the density matrices and the observables as matrix product states. This allows the calculation of expectation values and correlation functions as scalar products in operator space. The simulations of density matrices in inverse temperature and the local operators in the Heisenberg picture are independent and result in a grid of expectation values for all intermediate temperatures and times. Simulations can be performed using real arithmetics with only polynomial growth of computational resources in inverse temperature and time for integrable systems. The method is illustrated for the XXZ model and the single impurity Anderson model. ; ISSN:1367-2630 |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/application/pdf |
| اللغة: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/wos/000339235600002; http://hdl.handle.net/20.500.11850/87554 |
| DOI: | 10.3929/ethz-b-000087554 |
| الاتاحة: | https://hdl.handle.net/20.500.11850/87554 https://doi.org/10.3929/ethz-b-000087554 |
| Rights: | info:eu-repo/semantics/openAccess ; http://creativecommons.org/licenses/by/3.0/ ; Creative Commons Attribution 3.0 Unported |
| رقم الانضمام: | edsbas.91093119 |
| قاعدة البيانات: | BASE |
| DOI: | 10.3929/ethz-b-000087554 |
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