Academic Journal
Equal-time approach to real-time dynamics of quantum fields
| العنوان: | Equal-time approach to real-time dynamics of quantum fields |
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| المؤلفون: | Robert Ott, Torsten V. Zache, Jürgen Berges |
| المصدر: | SciPost Physics, Vol 14, Iss 2, p 011 (2023) |
| بيانات النشر: | SciPost |
| سنة النشر: | 2023 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | Physics, QC1-999 |
| الوصف: | We employ the equal-time formulation of quantum field theory to derive effective kinetic theories, first for a weakly coupled non-relativistic Bose gas, and then for a strongly correlated system of self-interacting $N$-component fields. Our results provide the link between state-of-the-art measurements of equal-time effective actions using quantum simulator platforms, as employed in [Phys. Rev. X 10, 011020 (2020); Nat. Phys. 16, 1012 (2020)], and observables underlying effective kinetic or hydrodynamic descriptions. New non-perturbative approximation schemes can be developed and certified this way, where the a priori time-local formulation of the equal-time effective action has crucial advantages over the conventional closed-time-path approach which is non-local in time. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 2542-4653 |
| Relation: | https://scipost.org/SciPostPhys.14.2.011; https://doaj.org/toc/2542-4653; https://doaj.org/article/ba810c62b4ff4cdba670e3acd75c1c32 |
| DOI: | 10.21468/SciPostPhys.14.2.011 |
| الاتاحة: | https://doi.org/10.21468/SciPostPhys.14.2.011 https://doaj.org/article/ba810c62b4ff4cdba670e3acd75c1c32 |
| رقم الانضمام: | edsbas.61DA5422 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 25424653 |
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| DOI: | 10.21468/SciPostPhys.14.2.011 |