D-brane facts for kids
In string theory, D-branes, short for Dirichlet membrane, are a class of extended objects upon which open strings can end with Dirichlet boundary conditions, after which they are named. D-branes were discovered by Dai, Leigh and Polchinski, and independently by Hořava, in 1989. In 1995, Polchinski identified D-branes with black p-brane solutions of supergravity, a discovery that triggered the Second Superstring Revolution and led to both holographic and M-theory dualities.
D-branes are typically classified by their spatial dimension, which is indicated by a number written after the D.
See also
In Spanish: D-brana para niños
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D-brane Facts for Kids. Kiddle Encyclopedia.