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

- Event Type
- Seminar/Symposium
- Sponsor
- Physics and Mathematics
- Location
- 222 Loomis
- Date
- Dec 7, 2017 12:30 pm
- Speaker
- Zuhair Khandker, University of Illinois at Urbana Champaign
- Contact
- Janice Benner
- jbenner@illinois.edu
- Phone
- 217-244-4262
- Views
- 12
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.