Quantum gravity from quantum matter
Title: Quantum gravity from quantum matter Abstract: We present a model of quantum gravity in which dimension, topology and geometry of spacetime are collective dynamical variables that describe the pattern […]
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9/10/2021 General Relativity Seminar
Title: Asymptotic localization, massive fields, and gravitational singularities Abstract: I will review three recent developments on Einstein’s field equations under low decay or low regularity conditions. First, the Seed-to-Solution Method […]
Threshold phenomena in random graphs and hypergraphs
Member Seminar Speaker: Michael Simkin Title: Threshold phenomena in random graphs and hypergraphs Abstract: In 1959 Paul Erdos and Alfred Renyi introduced a model of random graphs that is the cornerstone […]
More Exact Results in Gauge Theories: Confinement and Chiral Symmetry Breaking
Title: More Exact Results in Gauge Theories: Confinement and Chiral Symmetry Breaking Abstract: In this follow-up to Hitoshi Murayama’s talk “Some Exact Results in QCD-like and Chiral Gauge Theories”, I […]
Gradient flows on totally nonnegative flag varieties
Abstract: One can view a partial flag variety in C^n as an adjoint orbit inside the Lie algebra of n x n skew-Hermitian matrices. We use the orbit context to […]
Swampland Program
During the 2021–2022 academic year, the CMSA will host a program on the so-called “Swampland.” The Swampland program aims to determine which low-energy effective field theories are consistent with nonperturbative quantum gravity considerations. Not […]
Decoding Divergent Distances
Speaker: John Stout, Harvard University Title: Decoding Divergent Distances Abstract: Motivated by a relationship between the Zamolodchikov and NLSM metrics to the so-called quantum information metric, I will discuss recent work […]
Simplices in the Calabi–Yau web
Abstract: Calabi–Yau manifolds of a given dimension are connected by an intricate web of birational maps. This web has deep consequences for the derived categories of coherent sheaves on such manifolds, […]
Hyperbolic Geometry and Quantum Invariants
Speaker: Tian Yang (Texas A&M University) Title: Hyperbolic Geometry and Quantum Invariants Abstract: There are two very different approaches to 3-dimensional topology, the hyperbolic geometry following the work of Thurston and the quantum invariants […]
CMSA Colloquium 9/15/2021 – 5/25/2022
During the 2021–22 academic year, the CMSA will be hosting a Colloquium, organized by Du Pei, Changji Xu, and Michael Simkin. It will take place on Wednesdays at 9:30am – 10:30am (Boston time). The […]
Why abstraction is the key to intelligence, and what we’re still missing
https://youtu.be/3Nxe7J07TQY Speaker: Francois Chollet, Google Title: Why abstraction is the key to intelligence, and what we’re still missing Abstract: This talk provides a personal perspective on the way forward towards more […]
Three-particle mechanism for pairing and superconductivity
Title: Three-particle mechanism for pairing and superconductivity Abstract: I will present a new mechanism and an exact theory of electron pairing due to repulsive interaction in doped insulators. When the […]