bosonic string theory requires 26 dimensions(adsbygoogle = window.adsbygoogle || []).push({});

superstring theory requires 10, 9 spatial 1 dimension of time

Witten has researched twistor string theory

has there been any serious research with (super) string theory written on 4 complex -valued dimensions of spacetime?

the additional dimensions consists both of imaginary space and imaginary time, something Stephen hawking wrote of, but 4 real dimensions, and 4 or more imaginary dimensions, or give rise to 4 real dimensions

are there any kaluza klein theories in which the extra dimensions of space and time are imaginary, i ?

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# I String theory on complex spacetime, twistor string

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