Extra Dimensions and their Ultraviolet Completion

Understand

Large extra dimensions are one of the constructions addressing the hierarchy problem of the Standard Model.

• Their main theoretical and phenomenological challenge is that already predicting LHC effects requires an ultraviolet completion of TeV-scale gravity.
• In these lecture notes we first give a basic introduction into TeV-scale gravity models and their collider effects and then discuss possible ultraviolet completions, like string theory and fixed-point gravity.