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非普适偶极碰撞中的共振。

Resonances in Non-universal Dipolar Collisions.

机构信息

Institute for Molecules and Materials, Radboud University, Heijendaalseweg 135, 6525 AJ Nijmegen, The Netherlands.

出版信息

J Phys Chem A. 2023 Mar 9;127(9):2194-2211. doi: 10.1021/acs.jpca.3c00797. Epub 2023 Feb 24.

DOI:10.1021/acs.jpca.3c00797
PMID:36825902
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10009814/
Abstract

Scattering resonances due to the dipole-dipole interaction between ultracold molecules, induced by static or microwave fields, are studied theoretically. We develop a method for coupled-channel calculations that can efficiently impose many short-range boundary conditions, defined by a short-range phase shift and loss probability as in quantum defect theory. We study how resonances appear as the short-range loss probability is lowered below the universal unit probability. This may become realizable for nonreactive ultracold molecules in blue-detuned box potentials.

摘要

由于超冷分子之间的偶极-偶极相互作用而产生的散射共振，通过静态或微波场来诱导，在理论上进行了研究。我们开发了一种用于耦合通道计算的方法，该方法可以有效地施加许多短程边界条件，这些边界条件由短程相移和损耗概率定义，如量子亏损理论中所述。我们研究了在短程损耗概率降低到低于普遍单位概率时，共振如何出现。对于在蓝失谐盒势中的非反应性超冷分子，这可能是可行的。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0cfb/10009814/9d8616341f58/jp3c00797_0018.jpg
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本文引用的文献

1
Symmetry Breaking in Sticky Collisions between Ultracold Molecules.超冷分子间粘性碰撞中的对称性破缺
Phys Rev Lett. 2022 Dec 9;129(24):243401. doi: 10.1103/PhysRevLett.129.243401.
2
Evaporation of microwave-shielded polar molecules to quantum degeneracy.微波屏蔽极性分子的蒸发至量子简并态。
Nature. 2022 Jul;607(7920):677-681. doi: 10.1038/s41586-022-04900-0. Epub 2022 Jul 27.
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Probing Photoinduced Two-Body Loss of Ultracold Nonreactive Bosonic ^{23}Na^{87}Rb and ^{23}Na^{39}K Molecules.探测超冷非反应性玻色子\(^{23}Na^{87}Rb\)和\(^{23}Na^{39}K\)分子的光致两体损失
Phys Rev Lett. 2021 Oct 15;127(16):163401. doi: 10.1103/PhysRevLett.127.163401.
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Observation of microwave shielding of ultracold molecules.观察超冷分子的微波屏蔽。
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Resonant collisional shielding of reactive molecules using electric fields.利用电场对反应分子进行共振碰撞屏蔽。
Science. 2020 Dec 11;370(6522):1324-1327. doi: 10.1126/science.abe7370.
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Resonant Dipolar Collisions of Ultracold Molecules Induced by Microwave Dressing.微波修饰诱导的超冷分子共振偶极碰撞
Phys Rev Lett. 2020 Aug 7;125(6):063401. doi: 10.1103/PhysRevLett.125.063401.
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Loss of Ultracold ^{87}Rb^{133}Cs Molecules via Optical Excitation of Long-Lived Two-Body Collision Complexes.通过长寿命双体碰撞复合物的光激发导致超冷\(^{87}Rb^{133}Cs\)分子的损失
Phys Rev Lett. 2020 Apr 24;124(16):163402. doi: 10.1103/PhysRevLett.124.163402.
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Photoinduced Two-Body Loss of Ultracold Molecules.光诱导超冷分子的双体损失。
Phys Rev Lett. 2019 Sep 20;123(12):123402. doi: 10.1103/PhysRevLett.123.123402.
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Sticky collisions of ultracold RbCs molecules.超冷铷铯分子的粘性碰撞。
Nat Commun. 2019 Jul 15;10(1):3104. doi: 10.1038/s41467-019-11033-y.
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Observation of magnetically tunable Feshbach resonances in ultracold NaK + K collisions.超冷NaK + K碰撞中磁可调费什巴赫共振的观测
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