Fundamental Constraints for Fundamental Theories


Rosen, R. (2020). Fundamental Constraints for Fundamental Theories. Perimeter Institute. https://pirsa.org/20030016


Rosen, Rachel. Fundamental Constraints for Fundamental Theories. Perimeter Institute, Mar. 11, 2020, https://pirsa.org/20030016


          @misc{ pirsa_PIRSA:20030016,
            doi = {10.48660/20030016},
            url = {https://pirsa.org/20030016},
            author = {Rosen, Rachel},
            keywords = {Other},
            language = {en},
            title = {Fundamental Constraints for Fundamental Theories},
            publisher = {Perimeter Institute},
            year = {2020},
            month = {mar},
            note = {PIRSA:20030016 see, \url{https://pirsa.org}}

Rachel Rosen Carnegie Mellon University

Talk Type Scientific Series


As our understanding of the universe and its fundamental building blocks extends to shorter and shorter distances, experiments capable of probing these scales are becoming increasingly difficult to construct. Fundamental particle physics faces a potential crisis: an absence of data at the shortest possible scales. Yet remarkably, even in the absence of experimental data, the requirement of theoretical consistency puts stringent constraints on viable models of fundamental particles and their interactions. In this talk I’ll discuss a variety of criteria that constrain theories of particles in flat spacetime and de Sitter. Such criteria have the possibility to address questions such as: What low energy theories admit consistent UV completions? Which massive particles are allowed in an interacting theory? Is string theory the unique weakly coupled UV completion of General Relativity?