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论文类型：期刊论文

发表时间：2012-09-26

发表刊物：PHYSICAL REVIEW A

收录刊物：SCIE、EI、Scopus

卷号：86

期号：3

ISSN号：1050-2947

摘要：The effects of an electric field on the magnetically induced Li-6-K-40 Feshbach resonances are investigated theoretically by using the asymptotic bound-state model. We calculate the positions and widths of the Feshbach resonances observed in the experiments in the presence of an electric field and give a detailed analysis. An electric field can change the relative magnetic moment and the coupling strength to a different extent. The variation of resonant width caused by a strong electric field mainly depends on the coupling strength, and the s-wave scattering cross section in an electric field is sensitive to the temperature of the colliding system and the magnetic-field intensity. The maximum of the thermal average scattering rate constant can be changed by several factors by applying an electric field.