Quantum field theory was originally developed as the extension of quantum mechanics needed to accommodate the principles of special relativity. Today quantum field theory is the modern paradigm with which we understand particle physics, condensed matter systems, and many aspects of early universe cosmology, and it is used to describe the interactions of elementary particles, the dynamics of many body systems and critical phenomena, all with exquisite accuracy. Currently, Perimeter researchers are producing world-leading advances in the study of integrability and scattering amplitudes in quantum field theories.
String theory is a theoretical framework which was proposed to produce a unified description of all particles and forces in nature, including gravity. It is based on the idea that at very short distances, all particles should in fact be seen to be extended one-dimensional objects, i.e., ‘strings.’ Modern string theory has grown to be a broad and varied field of research with strong connections to quantum gravity, particle physics and cosmology, as well as mathematics. An exciting new framework known as ‘holography’ has emerged from string theory whereby quantum gravity is formulated in terms of quantum field theory in one less dimension. This symbiosis between quantum field theory and quantum gravity has been a focus of many Perimeter researchers. This has led to the development of exciting new methods to study the quantum dynamics of gauge theories and in the application of these techniques to new domains, such as nuclear physics and condensed matter physics
Format results
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Twisted Holography Mini-Course - Lecture 20231116
Kevin Costello Perimeter Institute for Theoretical Physics
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Equivalence of 1-loop RG flows in 4d Chern-Simons and integrable 2d sigma-models
Nat Levine École Normale Supérieure - PSL
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Twisted Holography Mini-Course - Lecture 20231109
Kevin Costello Perimeter Institute for Theoretical Physics
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Twisted Holography Mini-Course - Lecture 20231102
Kevin Costello Perimeter Institute for Theoretical Physics
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Loop-corrected soft photon theorems and large gauge transformations
Sangmin Choi University of Amsterdam
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3pt functions: Yes Q's
Pedro Vieira Perimeter Institute for Theoretical Physics
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An explicit solution
Paul Ryan King's College London
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QSC definition in N=4
Paul Ryan King's College London
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Carrollian c-functions and flat space holographic RG flows
Daniel Grumiller Technische Universität Wien
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Q-functions in spin chains. QSC for spin chains
Paul Ryan King's College London
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3pt function: No Q's
Pedro Vieira Perimeter Institute for Theoretical Physics