报告题目：Origins of parameters in adimensional models
报告人：Andrew Fowlie (西交利物浦大学)
摘要：We explore the origins of parameters in adimensional theories --- fundamental theories with no classical massive scales. If the parameters originate as draws from a distribution, it should be possible to write a distribution for them that doesn't depend on or introduce any massive scales. These distributions are the invariant distributions for the renormalization group (RG). If there exist RG invariant combinations of parameters, the RG invariant distributions are specified up to arbitrary functions of the RG invariants. If such distributions can be constructed, adimensional theories could predict the values of their parameters through distributions that are constrained by the RG. If they can't be constructed, the parameters must originate in a different way. We demonstrate the RG invariant distributions in the Coleman-Weinberg model and a totally asymptotically free theory.
报告人简介：Andrew Fowlie, a junior faculty member at Xi’an Jiaotong-Liverpool University (XJTLU). Andrew obtained my PhD from Sheffield University in 2013 under the supervision of Prof. Leszek Roszkowski. Before joining XJTLU, he worked at Nanjing Normal University, Monash University and KBFI Tallinn. His research interests include beyond the Standard model phenomenology, LHC physics, dark matter and Bayesian statistics.