Coherence and Josephson oscillations between two tunnel-coupled one-dimensional atomic quasicondensates at finite temperature
| العنوان: | Coherence and Josephson oscillations between two tunnel-coupled one-dimensional atomic quasicondensates at finite temperature |
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| المؤلفون: | Igor Mazets, Pjotrs Grišins |
| المصدر: | Physical Review A. 87 |
| بيانات النشر: | American Physical Society (APS), 2013. |
| سنة النشر: | 2013 |
| مصطلحات موضوعية: | Condensed Matter::Quantum Gases, Imagination, Physics, Condensed matter physics, media_common.quotation_subject, FOS: Physical sciences, Thermal fluctuations, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, 01 natural sciences, Atomic and Molecular Physics, and Optics, 010305 fluids & plasmas, Quantum Gases (cond-mat.quant-gas), 0103 physical sciences, Relative phase, Condensed Matter - Quantum Gases, 010306 general physics, media_common, Coherence (physics) |
| الوصف: | We revisit the theory of tunnel-coupled atomic quasicondensates in double-well elongated traps at finite temperatures. Using the functional-integral approach, we calculate the relative-phase correlation function beyond the harmonic limit of small fluctuations of the relative phase and its conjugate relative-density variable. We show that the thermal fluctuations of the relative phase between the two quasicondensates decrease the frequency of Josephson oscillations and even wash out these oscillations for small values of the tunnel coupling. revtex4, 4 figures (.eps) |
| تدمد: | 1094-1622 1050-2947 |
| DOI: | 10.1103/physreva.87.013629 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4a18d3b5fa0ee3128cdaf401c814458 https://doi.org/10.1103/physreva.87.013629 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....f4a18d3b5fa0ee3128cdaf401c814458 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10941622 10502947 |
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| DOI: | 10.1103/physreva.87.013629 |