# Quantum Field Theory, Separation of Scales, and Beyond

### APA

Seiberg, N. (2022). Quantum Field Theory, Separation of Scales, and Beyond. Perimeter Institute. https://pirsa.org/22060039

### MLA

Seiberg, Nathan. Quantum Field Theory, Separation of Scales, and Beyond. Perimeter Institute, Jun. 08, 2022, https://pirsa.org/22060039

### BibTex

@misc{ pirsa_PIRSA:22060039, doi = {10.48660/22060039}, url = {https://pirsa.org/22060039}, author = {Seiberg, Nathan}, keywords = {Mathematical physics}, language = {en}, title = {Quantum Field Theory, Separation of Scales, and Beyond}, publisher = {Perimeter Institute}, year = {2022}, month = {jun}, note = {PIRSA:22060039 see, \url{https://pirsa.org}} }

Nathan Seiberg Institute for Advanced Study (IAS)

## Abstract

We will review the role of Quantum Field Theory (QFT) in modern physics. We will highlight how QFT uses a reductionist perspective as a powerful quantitative tool relating phenomena at different length and energy scales. We will then discuss various examples motivated by string theory and lattice models that challenge this separation of scales and seem outside the standard framework of QFT. These lattice models include theories of fractons and other exotic systems.

Zoom Link: https://pitp.zoom.us/j/97212376441?pwd=bkFIZ0pIVG1xV3JQYlpnNE5Ebllydz09