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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

Displaying all lectures given by: Sung-Sik Lee


PIRSA:12050033  ( Flash Presentation , MP3 , PDF ) Which Format?
Background Independent Holographic Description : From Matrix Field Theory to Quantum Gravity
Speaker(s): Sung-Sik Lee
Abstract: A local renormalization group procedure is proposed where length scale is changed in spacetime dependent manner. Combining this scheme with an earlier observation that high energy modes in renormalization group play the role of dynamical sources for low energy modes at each scale, we provide a presc... read more
Date: 22/05/2012 - 2:00 pm

First Principle Construction of Holographic Duals
Speaker(s): Sung-Sik Lee
Abstract: Topological Quantum field theories(TQFTs) are a special class of QFTs. Their actions do not depend on the metric of the background space-time manifold. Thus, it is very natural to define TQFTs on an arbitrary triangulation of the space-time manifold and they are independent on the triangulation. Mor... read more
Date: 25/10/2011 - 11:30 am

Quantum Order and Emergent Space in Holographic Phases of Matter
Speaker(s): Sung-Sik Lee
Abstract: In this talk, I will present a first principle construction of a holographic dual for gauged matrix models. The dual theory is a closed string field theory coupled with an emergent two-form gauge field defined in one higher dimensional space. The bulk space with an extra dimension emerges as a well ... read more
Date: 18/10/2011 - 2:00 pm

Holographic description of quantum field theory
Speaker(s): Sung-Sik Lee
Abstract: The AdS/CFT correspondence has opened the door to understand a class of strongly coupled quantum field theories. Although the original correspondence has been conjectured based on string theory, it is possible that the underlying principle is more general, and a wider class of quantum field theories... read more
Date: 29/05/2010 - 9:45 am

Emergent supersymmetry and holographic non-Fermi liquid
Speaker(s): Sung-Sik Lee
Abstract: Understanding dynamics of strongly coupled quantum field theories is an important problem in both condensed matter physics and high energy physics. In condensed matter systems, interacting quantum field theories can arise either at a critical point, or in a finite region of a parameter space. In the... read more
Date: 03/12/2008 - 9:30 am

Spin Liquid with Spinon Fermi Surface: Its Stability and Possible Application to the Organics
Speaker(s): Sung-Sik Lee
Abstract: Based on a U(1) gauge theory of the Hubbard model on the triangular lattice, it is argued that a spin liquid phase may exist near the Mott transition in the organic compound κ-(BEDT-TTF)2Cu2(CN)3. In the spin liquid state, low energy excitations are fermionic spinons and an emergent U(1) gauge boso... read more
Date: 24/04/2008 - 5:00 pm

Dual gravity study of the (2+1)D compact U(1) gauge theory coupled with strongly interacting matter fields
Speaker(s): Sung-Sik Lee
Abstract: Strongly correlated many-body systems are often formulated as gauge theories where gauge field plays a role of Lagrangian multiplier and fundamental matter field represents a fractional degree of freedom which carries only a fractional quantum number of microscopic particle. Although the fractional ... read more
Date: 06/03/2006 - 2:00 pm
Series: Colloquium
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