Report
Exceptional points in Fermi liquids with quadrupolar interactions
| العنوان: | Exceptional points in Fermi liquids with quadrupolar interactions |
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| المؤلفون: | Aquino, Rui, Barci, Daniel G. |
| المصدر: | Phys. Rev. B 102, 201110(R) (2020) |
| سنة النشر: | 2020 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons |
| الوصف: | We show the existence of non-Hermitian degeneracies, known as exceptional points, in the collective mode spectrum of Fermi liquids with quadrupolar interactions. Through a careful analysis of the analytic properties of the dynamic quadrupolar susceptibility, we show that, in the weak attractive region, two stable collective modes coalesce to an exceptional point. We completely characterize this singularity, explicitly showing its topological properties. Experimental signatures are also discussed. Comment: 5 pages, 3 figures. In this version we have added "Supplemental Material". Version accepted for publication in PRB Rapid Communications |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.102.201110 |
| URL الوصول: | http://arxiv.org/abs/2006.09283 |
| رقم الانضمام: | edsarx.2006.09283 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.102.201110 |
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