تقرير
Linear rotor in an ideal Bose gas near the threshold for binding
| العنوان: | Linear rotor in an ideal Bose gas near the threshold for binding |
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| المؤلفون: | Dome, Tibor, Volosniev, Artem G., Ghazaryan, Areg, Safari, Laleh, Schmidt, Richard, Lemeshko, Mikhail |
| المصدر: | Phys. Rev. B 109, 014102 (2024) |
| سنة النشر: | 2023 |
| المجموعة: | Condensed Matter Physics (Other) Quantum Physics |
| مصطلحات موضوعية: | Condensed Matter - Quantum Gases, Physics - Chemical Physics, Quantum Physics |
| الوصف: | We study a linear rotor in a bosonic bath within the angulon formalism. Our focus is on systems where isotropic or anisotropic impurity-boson interactions support a shallow bound state. To study the fate of the angulon in the vicinity of bound-state formation, we formulate a beyond-linear-coupling angulon Hamiltonian. First, we use it to study attractive, spherically symmetric impurity-boson interactions for which the linear rotor can be mapped onto a static impurity. The well-known polaron formalism provides an adequate description in this limit. Second, we consider anisotropic potentials, and show that the presence of a shallow bound state with pronounced anisotropic character leads to a many-body instability that washes out the angulon dynamics. Comment: version accepted for publication in Phys. Rev. B |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.109.014102 |
| URL الوصول: | http://arxiv.org/abs/2308.03852 |
| رقم الأكسشن: | edsarx.2308.03852 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.109.014102 |
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