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Computing renormalization invariant properties of Levin-Wen phases
In the 90s Turaev, Viro, Barrett and Westbury constructed a (2+1)D state sum TQFT associated to any fusion category. The associated phases of matter were popularized by Kiteav, Levin and...
Aug 22, 2019
Algebraic construction of interacting QFT models on causal sets
In this talk I will report on recent progress in building QFT models on causal sets. The framework I'm using is that of perturbative algebraic quantum field theory (pAQFT). It...
Aug 22, 2019
Funding
An ever-growing group of public and private supporters has helped make Perimeter Institute what it is today: an independent, world-leading centre for fundamental research, scientific training, and educational outreach. Public...
Locality or non-locality? Fermionic entanglement on the torus
Understanding entanglement in QFTs is a challenging topic that involves many aspects. One important probe for this is the modular (or entanglement) Hamiltonian, which is closely related to the Unruh...
Aug 27, 2019
Geometric Extremization for AdS/CFT and Black Hole Entropy
We consider supersymmetric $AdS_3times Y_7$ solutions of type IIB supergravity dual to N=(0,2) SCFTs in d=2, as well as $AdS_2times Y_9$ solutions of D=11 supergravity dual to N=2 supersymmetric quantum...
Aug 28, 2019
Coherence in logical quantum channels
In quantum error correcting codes, there is a distinction between coherent and incoherent noise. Coherent noise can cause the average infidelity to accumulate quadratically when a fixed channel is applied...
Aug 28, 2019
General Covariance and Causal Sets
If General Relativity emerges from quantum gravity, then general covariance, the gauge invariance of GR, will emerge with it. We can ask, within any approach to the problem of quantum...
Aug 29, 2019
Real-space recipes for general topological crystalline states
Topological crystalline states are short-range entangled states jointly protected by onsite and crystalline symmetries. While the non-interacting limit of these states, e.g., the topological crystalline insulators, have been intensively studied...
Sep 03, 2019
Operational Causality in Spacetime
The no-signalling principle, preventing superluminal communication and the consequent logical paradoxes, is typically formulated within the information-theoretic framework in terms of admissible correlations in composite systems. In my talk, I...
Sep 03, 2019