Journal Article String field theory solution corresponding to constant background magnetic field

Ishibashi, Nobuyuki  ,  Kishimoto, Isao  ,  Takahashi, Tomohiko

2017 ( 1 )  , p.013B06 , 2017-01 , Oxford University Press
Following the method recently proposed by Erler and Maccaferri, we construct solutions to the equation of motion of Witten's cubic string field theory, which describe a constant magnetic field background. We study the boundary condition changing operators relevant to such a background, and calculate their operator product expansions. We obtain solutions whose classical action coincide with the Born–Infeld action.

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