| Name | Affiliation | period | 
| Tobias Colding | MIT | |
| Nicola Gigli | SISSA Scuola Internazionale Superiore di Studi Avanzati | |
| Michel Ledoux | University of Toulouse | |
| Jan Maas | IST Austria | 
     
     6 May 2012 
     - 12 May 2012 | 
  
| Takashi Shioya | Tohoku University | 
     
     5 May 2012 
     - 12 May 2012 |