Informal Geometry & Dynamics Seminar: Billiards, heights and non-arithmetic groups
March 11, 2020 4:00 pmSpeaker: Curtis McMullen
Announcements - All
**CANCELED** Schinzel-Zassenhaus, height gap and overconvergence
March 11, 2020 3:00 pmSpeaker: Vesselin Dimitrov
We explain a new height gap result on holonomic power series with rational coefficients, and prove the Schinzel-Zassenhaus conjecture as its consequence: a monic irreducible non-cyclotomic integer polynomial of degree...
Read more
CMSA Quantum Matter/Quantum Field Theory Seminar: Quantized Graphs and Quantum Error Correction
March 11, 2020 10:30 amSpeaker: Zhengwei Liu
Graph theory is important in information theory. We introduce a quantization process on graphs and apply the quantized graphs in quantum information. The quon language provides a mathematical theory to...
Read more
**CANCELED** Ancient gradient flows of elliptic functionals and Morse index
March 10, 2020 4:15 pmSpeaker: Christos Mantoulidis
(Joint with Kyeongsu Choi.) We study closed ancient solutions to gradient flows of elliptic functionals in Riemannian manifolds, focusing on mean curvature flow for the talk. In all dimensions and codimensions, we...
Read more
**CANCELED** Variational quantum algorithms: obstacles and opportunities
March 10, 2020 3:00 pmSpeaker: Sergey Bravyi
Variational quantum algorithms such as VQE or QAOA aim to simulate low-energy properties of quantum many-body systems or find approximate solutions of combinatorial optimization problems. Such algorithms employ variational states...
Read more
CMSA Special Seminar: Multivariate public key cryptosystems – Candidates for the Next Generation Post-quantum Standards
March 10, 2020 10:30 amSpeaker: Jintai Ding
Multivariate public key cryptosystems (MPKC) are one of the four main families of post-quantum public key cryptosystems. In a MPKC, the public key is given by a set of quadratic...
Read more
CMSA Mathematical Physics Seminar: Fano Lagrangian submanifolds of hyperkahler manifolds
March 9, 2020 12:00 pmSpeaker: Laure Flapan
For any polarized hyperkahler manifold of K3 type whose dimension is divisible by 8, we produce a Lagrangian submanifold which is Fano arising as a connected component of the fixed...
Read more
CMSA Special Seminar: Differentials ideals for Calabi-Yau periods and Feynman integrals
March 9, 2020 10:30 amSpeaker: Albrecht Klemm
We will review the connection between Feynman integrals and Calabi--Yau periods. Then we explain some properties of the period geometry, in particular the Picard--Fuchs differential ideal and to which extend...
Read more
A topological approach to convexity in complex surfaces
March 6, 2020 3:30 pmSpeaker: Bob Gompf
We will discuss the classical notion of J-convexity of subsets of complex manifolds, and the closely related notion of Stein manifolds. The theory is particularly subtle in complex dimension 2. Surprisingly, progress...
Read more
**CANCELED** A scale-critical trapped surface formation criterion for the Einstein-Maxwell system
March 6, 2020 10:30 amSpeaker: Nikolaos Athanasiou
Few notions within the realm of mathematical physics succeed in capturing the imagination and inspiring awe as well as that of a black hole. First encountered in the Schwarzschild solution,...
Read more