Today

  • Understanding Optimization in Deep Learning with Central Flows

    Hybrid - G10

    https://youtu.be/04E8r76TetQ New Technologies in Mathematics Seminar Speaker: Alex Damian, Harvard Title: Understanding Optimization in Deep Learning with Central Flows Abstract: Traditional theories of optimization cannot describe the dynamics of optimization in deep learning, even in the simple setting of deterministic training. The challenge is that optimizers typically operate in a complex, oscillatory regime called the "edge of […]

  • The Extended Vertex Algebra of 4d N = 2 SCFTs and their Higher Products

    Hybrid - G10

    Quantum Field Theory and Physical Mathematics Seminar Speaker: Mitch Weaver, KAIST Title: The Extended Vertex Algebra of 4d N = 2 SCFTs and their Higher Products Abstract: Every 4d N=2 superconformal field theory contains a BPS protected sub-algebra of local operators that has the structure of a vertex operator algebra (VOA). This VOA is identified […]

  • Freedman CMSA Seminar: Michael Freedman (CMSA) & Elia Portnoy (MIT)

    Hybrid - G10

    Freedman CMSA Seminar Speaker: Michael Freedman, Harvard CMSA (3:00–4:00 pm ET) Title: How many links can you fit in a box? Abstract: I’ll discuss a “made up” problem on the interface of topology and packing, which may well be classified as “recreational math”.  Here is the first question suppose you have a unit box, how many unlinked […]

  • Discovery in Mathematics with Automated Conjecturing

    Hybrid - G10

    https://youtu.be/2tmmafZxBIw New Technologies in Mathematics Seminar Speaker: Randy Davila, RelationalAI and Rice University Title: Discovery in Mathematics with Automated Conjecturing Abstract: Automated conjecturing is a form of artificial intelligence that applies heuristic-driven methods to mathematical discovery. Since the late 1980s, systems such as Fajtlowicz’s Graffiti, DeLaViña’s Graffiti.pc, and TxGraffiti have collectively contributed to over 130 publications in […]

  • Shape morphing with swelling hydrogels and expanding foams

    Hybrid - G10

    Active Matter Seminar Speaker: Abby Plummer, Boston University Title: Shape morphing with swelling hydrogels and expanding foams Abstract: Materials that increase in size offer intriguing possibilities for shape-morphing applications. Here, we explore two such systems—swelling polyacrylamide hydrogels and expanding polyurethane foams. The hydrogels swell by absorbing water into crosslinked polymer networks. They can therefore be […]

  • Fluid stabilization in slowly expanding cosmological spacetime

    Hybrid - G10

    https://youtu.be/SCIi6R_uTZM General Relativity Seminar Speaker: David Fajman (Vienna) Title: Fluid stabilization in slowly expanding cosmological spacetime Abstract: Relativistic fluids are known to form shocks during their evolution from near-homogeneous initial data. In expanding spacetimes, shock formation is suppressed, if the expansion is sufficiently strong. We refer to this effect as fluid stabilization. The occurrence of this phenomenon depends […]

  • CMSA QMMP 05.05.23 (2)

    Detecting central charge in a superconducting quantum processor

    Hybrid - G10

    Quantum Matter Seminar Speaker: Sona Najafi (IBM Quantum) Title: Detecting central charge in a superconducting quantum processor Abstract: Physical systems at the continuous phase transition point exhibit conformal symmetry rendering local scaling invariance. In two dimensions, the conformal group possesses infinite generators described by Virasoro algebra with an essential parameter known as a central charge. While […]

  • CMSA QMMP 04.21.23 (1)

    A model of the cuprates: from the pseudogap metal to d-wave superconductivity and charge order

    Hybrid - G10

    Quantum Matter Seminar Speaker: Prof. Subir Sachdev (Harvard) Title: A model of the cuprates: from the pseudogap metal to d-wave superconductivity and charge order Abstract: Soon after the discovery of high-temperature superconductivity in the cuprates, Anderson proposed a connection to quantum spin liquids. But observations since then have shown that the low-temperature phase diagram is […]

  • CMSA QMMP 04.14.23

    Fault-tolerant quantum computation via topological order on fractals and emergent symmetries

    Hybrid - G10

    Quantum Matter Seminar Speaker: Guanyu Zhu (IBM Quantum, T. J. Watson Research Center) Title: Fault-tolerant quantum computation via topological order on fractals and emergent symmetries Abstract: Topological quantum error correcting codes in integer spatial dimensions have been widely studied in the field of quantum information. A remaining major challenge is to reduce the space-time overhead […]

  • CMSA QMMP 03.24.23

    Traversable wormhole dynamics on a quantum processor

    Hybrid - G10

    Quantum Matter Seminar Speaker: Alexander Zlokapa, MIT Title: Traversable wormhole dynamics on a quantum processor Abstract: The holographic principle, theorized to be a property of quantum gravity, postulates that the description of a volume of space can be encoded on a lower-dimensional boundary. The anti-de Sitter (AdS)/conformal field theory correspondence or duality is the principal example […]

  • Positive Mass, Density, and Scalar Curvature on Noncompact Manifolds

    Hybrid - G10

    Member Seminar Speaker: Martin Lesourd Title: Positive Mass, Density, and Scalar Curvature on Noncompact Manifolds Abstract: I’ll describe some recent work spanning a couple of different papers on the topics mentioned in the title: Positive Mass, Density, and Scalar Curvature on Noncompact Manifolds. Two of these are with R. Unger, Prof. S-T. Yau, and two others are with R. Unger, […]