تقرير
Spin-orbit coupled bosons in one dimension: emergent gauge field and Lifshitz transition
| العنوان: | Spin-orbit coupled bosons in one dimension: emergent gauge field and Lifshitz transition |
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| المؤلفون: | Cole, William S., Lee, Junhyun, Mahmud, Khan W., Alavirad, Yahya, Spielman, I. B., Sau, Jay D. |
| المصدر: | Scientific Reports 9, Article number: 7471 (2019) |
| سنة النشر: | 2017 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Quantum Gases |
| الوصف: | In the presence of strong spin-independent interactions and spin-orbit coupling, we show that the spinor Bose liquid confined to one spatial dimension undergoes an interaction- or density-tuned quantum phase transition similar to one theoretically proposed for itinerant magnetic solid-state systems. The order parameter describes broken $Z_2$ inversion symmetry, with the ordered phase accompanied by non-vanishing momentum which is generated by fluctuations of an emergent dynamical gauge field at the phase transition. This quantum phase transition has dynamical critical exponent $z \simeq 2$, typical of a Lifshitz transition, but is described by a nontrivial interacting fixed point. From direct numerical simulation of the microscopic model, we extract previously unknown critical exponents for this fixed point. Our model describes a realistic situation of 1D ultracold atoms with Raman-induced spin-orbit coupling, establishing this system as a platform for studying exotic critical behavior of the Hertz-Millis type. Comment: 11 pages, 4 figures; minor revisions and updated acknowledgements |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1038/s41598-019-43929-6 |
| URL الوصول: | http://arxiv.org/abs/1711.05794 |
| رقم الأكسشن: | edsarx.1711.05794 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1038/s41598-019-43929-6 |
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