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Forums
Physics
Beyond the Standard Models
Disoriented with unoriented and oriented open strings
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[QUOTE="arivero, post: 5802432, member: 81"] The drawing of Armoni looks very as boundary condition marks in Mandelstam formalism for the light cone. I think there is something I am missing. To recapitulate: Type II are oriented strings and closed, Type I are unoriented and open, and Type I includes a portion of the closed IIB via orientifold quotient. Now, where are the unoriented open? They could be type II via D-Branes, or type I via restriction to the [adjoint of] U(n) subgroup. Does the literature discuss both cases? [/QUOTE]
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Forums
Physics
Beyond the Standard Models
Disoriented with unoriented and oriented open strings
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