The book provides particle phenomenologists with the information needed to understand string theory model building and describes in detail several alternative approaches to model building, such as ...

This chapter is part of a book that is no longer available to purchase from Cambridge Core Among the quantum states of open strings attached to a D-brane we found photon states with polarizations and ...

I used a variable tension brane model and also simultaneously promoted ... To make us comfortable, some modified gravity theory, such as Brans-Dicke's theory, also promotes Newton's constant ...