TH String Theory Seminar
                            
                        
                    
                    
                Naturalness and consistency in strings without supersymmetry
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        Europe/Zurich
    
                
                
                    
                        
                            
    
    
        
            
                
                4/3-006 - TH Conference Room (CERN)
            
            
                
    
            
        
    
                        
                    
                
            Description
            I describe recent work towards developing non-supersymmetric string 
theory as a phenomenological framework in which to embed the Standard Model. Chief among the issues that have to be solved in the absence of supersymmetry are stability and naturalness. I describe how they can be tackled using a Scherk-Schwarz compactification that allows supersymmetry to be parametrically broken (and the theory to be parametrically badly behaved). Being UV complete and one-loop finite the framework allows one to revisit various field theory ideas about naturalness (such as the so-called Veltman condition) to see if they make sense.