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July 9, 2020 to January 31, 2025
Europe/Zurich timezone

[Colloquium] Is Nature Natural? The Electroweak Hierarchy Problem Circa 2021

Jul 15, 2021, 3:00 PM


Prof. Nathaniel Craig (UC, Santa Barbara)


The discovery of the Higgs boson at the LHC marks the culmination of a decades-long quest for the final piece of the Standard Model. But the discovery of the Higgs also adds new urgency to the hierarchy problem, namely the question of why the Higgs boson is so light despite its unique quantum sensitivity to much higher energy scales. This puzzle is made all the more challenging by the lack of evidence for conventional approaches to the hierarchy problem at the LHC and other experiments. In this talk I'll discuss the essential features of the hierarchy problem and its many possible solutions — ranging from the familiar to the highly speculative — with a particular focus on recently-developed approaches that connect the hierarchy problem to cosmology in diverse ways.

Presentation materials