Open String Gravity?
نویسندگان
چکیده
We present a new application of Boundary String Field Theory: calculating the induced-gravity action on a D-brane. Using a simple quadratic tachyon potential to model a D-brane fluctuating in the flat target space we derive the effective action in terms of the extrinsic curvature to all orders in α′. We identify both the Born-Infeld structure as well as the Einstein-Hilbert term at order α′. This corroborates the conjectured existence of the latter term in the brane-world scenarios.
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