 It is a scenario inspired by string theory to explain the relative weakness of gravity to other forces, in which the Standard Model fields are confined to a (3+1)-dimensional membrane but gravity can also propagate in additional transverse spatial dimensions that are compact but may be as large as one-tenth of a millimeter.In this framework quantum gravity, string theory, and black holes may be experimentally investigated at the Large Hadron Collider.Dvali's work also includes the large-distance modification of gravity and its application to the cosmological constant problem.