Abstract
The super 0-brane and GS superstring actions on AdS 2 × S 2 background with 2-form flux are constructed by taking a supercoset approach. We find that the super 0-brane action contains two parameters which are interpreted as the electric and magnetic charges of the super 0-brane. The obtained super 0-brane action describes the BPS saturated dyonic superparticle moving on AdS 2 × S 2 background. The WZ action contains the required coupling with 2-form flux. For GS superstring, we find the string action on AdS 2 × S 2 takes the same form as those in AdS 3 × S 3 and AdS 5 × S 5 with RR field background.
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