Status  Confirmed 
Seminar Series  APCTH 
Subjects  hepth 
Date  Tuesday 2 October 2018 
Time  14:00 
Institute  APC 
Seminar Room  412 B  Rothko 
Speaker's Last Name  Dudas 
Speaker's First Name  Emilian 
Speaker's Email Address  
Speaker's Institution  CPHT  Ecole Polytechnique 
Title  Hidden symmetries and Goldstone bosons from higher dimensions? 
Abstract  Free massless scalars have a shift symmetry. This is usually broken by interactions, such that quantum corrections induce a quadratically divergent mass term. In the Standard Model this leads to the hierarchy problem, the question why the Higgs mass is so much smaller than the Planck mass. We present an example where a large scalar mass term is avoided by coupling the scalar to an infinite tower of massive states, obtained from a sixdimensional theory compactified on a torus with magnetic flux. We show that the shift symmetry of the scalar is preserved in the effective fourdimensional theory despite the presence of gauge and Yukawa interaction terms. 
arXiv Preprint Number  
Comments  
Attachments 
To Generate a poster for this seminar : [ Postscript  PDF ]

[ English version ] 