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String Theory and Particle Physics by Angel M. Uranga, Luis E. Ibáñez

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8

Heterotic string orbifolds and other exact CFT constructions

In Chapter 7 we have studied the construction of 4d  = 1 heterotic string vacua by compactification on smooth CY manifolds. The analysis of such compactifications is however limited because their worldsheet theory is not exactly solvable. Therefore, we must rely on the Kaluza–Klein reduction of the 10d supergravity action, which provides a good approximation to the 4d physics only in the large volume regime. In this chapter we study 4d  = 1 heterotic string vacua obtained from toroidal ...

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