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PRODID:https://murmitoyen.com/events/vanille/udem/
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DTSTAMP:20260412T012528
DTSTART:20171030T113000
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URL:https://murmitoyen.com/events/vanille/udem/detail/782301-emergent-dirac
 -fermions-and-gauge-field-in-condensed-matter-system-yin-chen-he-harvard
LOCATION:Université de Montréal - Pavillon J.-Armand-Bombardier\, 5155\, 
 chemin de la rampe \, Montréal\, QC\, Canada\, H3T 2B2
SUMMARY:Emergent Dirac fermions and gauge field in condensed matter system 
 - Yin-Chen He (Harvard)
DESCRIPTION:Emergent Dirac fermions and gauge field in condensed matter sys
 temYin-Chen HePostdoctoral researcherPhysics DepartmentHarvard University

 \nAbstract: Many-body entanglement can lead to exotic phases and phase tra
 nsitions beyond conventional symmetry breaking paradigm. The prominent exa
 mples are the topological ordered phase in the fractional quantum Hall and
  quantum spin liquid. In this talk\, I will go beyond the relatively well 
 understood gapped topological order\, and focus on the exotic critical phe
 nomena. Specifically I will discuss the critical theories that have emerge
 nt Dirac fermions interacting with a U(1) gauge field. I will show how tho
 se theories can emerge as a critical spin liquid phase on the kagome latti
 ce as well as the critical points between different fractional quantum Hal
 l phases. Our discoveries make a bridge between the formal field theories 
 with our real world and would also help to understand those theories that 
 puzzle the community for decades.
\nBio: 2016.9-present: Gordon and Betty 
 Moore fellowship\, Harvard University\; 2014.7-2016.8: Postdoc fellow\, Ma
 x-Planck institute of complex physics system\, Dresden\, Germany\; 2011.9-
 2014.7 Doctor of physics\, Fudan University\, Shanghai\, China
\nFor more 
 information: https://yinchenhe.wordpress.com
\nCette conférence est prés
 entée par le RQMP Versant Nord du Département de physique de l'Unive
 rsité de Montréal et de Génie physique de la Polytechnique.
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