| Electric-field-modified Feshbach resonances in ultracold atom–molecule collision |
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| 引用本文： | 程冬,李亚,凤尔银,黄武英. Electric-field-modified Feshbach resonances in ultracold atom–molecule collision[J]. 中国物理 B, 2017, 26(1): 13402-013402. DOI: 10.1088/1674-1056/26/1/013402 |
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| 作者姓名： | 程冬 李亚 凤尔银 黄武英 |
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| 作者单位： | Department of Physics, Anhui Normal University, Wuhu 241000, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant Nos. 10874001 and 11374014). |
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| 摘 要： | We present a detailed analysis of near zero-energy Feshbach resonances in ultracold collisions of atom and molecule,taking the He–PH system as an example, subject to superimposed electric and magnetic static fields. We find that the electric field can induce Feshbach resonance which cannot occur when only a magnetic field is applied, through couplings of the adjacent rotational states of different parities. We show that the electric field can shift the position of the magnetic Feshbach resonance, and change the amplitude of resonance significantly. Finally, we demonstrate that, for narrow magnetic Feshbach resonance as in most cases of ultracold atom–molecule collision, the electric field may be used to modulate the resonance, because the width of resonance in electric field scale is relatively larger than that in magnetic field scale.
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| 收稿时间： | 2016-07-23 |
Electric-field-modified Feshbach resonances in ultracold atom-molecule collision |
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| Affiliation: | Department of Physics, Anhui Normal University, Wuhu 241000, China |
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| Abstract: | We present a detailed analysis of near zero-energy Feshbach resonances in ultracold collisions of atom and molecule, taking the He-PH system as an example, subject to superimposed electric and magnetic static fields. We find that the electric field can induce Feshbach resonance which cannot occur when only a magnetic field is applied, through couplings of the adjacent rotational states of different parities. We show that the electric field can shift the position of the magnetic Feshbach resonance, and change the amplitude of resonance significantly. Finally, we demonstrate that, for narrow magnetic Feshbach resonance as in most cases of ultracold atom-molecule collision, the electric field may be used to modulate the resonance, because the width of resonance in electric field scale is relatively larger than that in magnetic field scale. |
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| Keywords: | Feshbach resonance ultracold atom-molecule collision |
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