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Add to Calendar 12/7/2017 12:30 pm 12/7/2017 America/Chicago Mathematical and Theoretical Physics Seminar: "Conformal Truncation: A New Method for Strongly-Coupled QFTs" DESCRIPTION:

I will present a new numerical method for studying strongly-coupled QFTs in any dimension. The method harnesses conformal symmetry, but in a manner applicable to general, non-conformal QFTs. The input is information about the UV CFT from which the QFT originates. The output is the physical QFT spectrum, along with real-time, infinite-volume correlation functions. So far, we have used the method to study 2D phi^4 theory. I will present new results for correlation functions at any coupling, including the Zamolodchikov c-function along the full RG-flow. I will also present a non-trivial cross-check of our numerical results: for a critical value of the coupling, phi^4 theory flows to the Ising model, and we match known analytical predictions. 

\n\nSPEAKER:

Zuhair Khandker, University of Illinois at Urbana Champaign

222 Loomis

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Mathematical and Theoretical Physics Seminar: "Conformal Truncation: A New Method for Strongly-Coupled QFTs"

Speaker Zuhair Khandker, University of Illinois at Urbana Champaign
Date: 12/7/2017
Time: 12:30 p.m.
Location:

222 Loomis

Event Contact: Janice Benner
217-244-4262
jbenner@illinois.edu
Sponsor:

Physics and Mathematics

Event Type: Seminar/Symposium
 

I will present a new numerical method for studying strongly-coupled QFTs in any dimension. The method harnesses conformal symmetry, but in a manner applicable to general, non-conformal QFTs. The input is information about the UV CFT from which the QFT originates. The output is the physical QFT spectrum, along with real-time, infinite-volume correlation functions. So far, we have used the method to study 2D phi^4 theory. I will present new results for correlation functions at any coupling, including the Zamolodchikov c-function along the full RG-flow. I will also present a non-trivial cross-check of our numerical results: for a critical value of the coupling, phi^4 theory flows to the Ising model, and we match known analytical predictions. 

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