Physics Events

  • Friday, December 9, 2016
    High Energy Theory Seminar
    “WIMPs, Miracles and Coincidences”

    Location: Bloomberg Hall Physics Library
    Time: 1:45 PM
    Speaker(s): Raffaele D'Agnolo, Member, School of Natural Sciences, IAS

    Description: I will briefly review our current experimental knowledge of dark matter and then discuss recent developments in model building. In particular I will show that dark matter can be a thermal relic exponentially lighter than the weak scale without being exponentially weakly coupled. I will discuss concrete examples of light thermal dark matter with sizable self-interactions and observable couplings to the Standard Model. The focus will be on how minimal deformations of the WIMP paradigm produce vastly different phenomenological consequences.

  • Friday, December 9, 2016
    Special High Energy Physics Seminar
    “An Inclusive and Generic Search for Supersymmetry in the Multijet + Missing Momentum Final State Performed on pp Collision Data Collected with the CMS Detector”

    Location: Jadwin Hall, Room 303
    Time: 3:00 PM
    Speaker(s): Jack Bradmiller-Feld, University of California, Santa Barbara

    Description: For the past two years, the LHC has collided protons at a record-high center-of-mass energy of 13 TeV. This time has provided an opportunity to search for beyond standard model particles at the TeV scale, including those predicted by supersymmetry, with unprecedented sensitivity.  I will briefly discuss some of the upgrades performed in preparation for the latest LHC runs, then present an overview of a generic search for strongly-produced supersymmetric particles in pp collisions in the multijet + missing transverse momentum final state. The data sample corresponds to 12.9 fb-1 recorded by the CMS experiment in 2016. I will review the theoretical and experimental motivation for this search, then describe some of the central challenges of the analysis. Finally, I will summarize the results, and look ahead to possible directions for this and similar searches in the coming years.

  • Monday, December 12, 2016
    High Energy Theory Seminar
    “Bosonization in Two and Three Dimensions and Spin Structures”

    Location: Bloomberg Lecture Hall
    Time: 2:30 PM
    Speaker(s): Anton Kapustin, California Institute of Technology

    Description: I will explain in examples how to incroporate the dependence on spin structure in fermionic lattice models. In two dimensions, I show to construct a spin-TQFT out of a superalgebra. In three dimensions, it turns out that fermionic lattice models are related to bosonic models with a global 1-form symmetry. This bosonization statement can be used to classify Symmetry Protected Topologicall phases of fermions. 

  • Tuesday, December 13, 2016
    Special Seminar
    “Imaging Relativistic Fermions in Simple 2D Potentials in Graphene”

    Location: Jadwin Hall, Room 303
    Time: 12:00 PM
    Speaker(s): Dillon Wong, University of California, Berkeley

    Description: Most physicists are familiar with how nonrelativistic quantum mechanics governs the behavior of particles in a Coulomb potential or a simple harmonic oscillator potential. But what happens when the particles become highly relativistic? Such questions used to lie mainly in the domain of high and intermediate energy physics. With the discovery that electrons in graphene behave like ultra-relativistic fermions, these questions are now accessible to the tools of condensed matter physics.

    In this talk, I will describe experiments in which a scanning tunneling microscope (STM) was employed to manipulate charged impurities to construct Coulomb and simple harmonic oscillator potentials in gate-tunable graphene devices. STM measurements were used to spectroscopically probe and image the resulting electronic wavefunctions of Dirac fermions in these potentials. For a Coulomb potential, we find that graphene’s massless electrons reorganize into “atomic collapse” states that are analogous to the bound states predicted for nuclei having atomic number greater than Z = 170. For a simple harmonic oscillator potential, we observe quantum interference patterns that can be identified with different principal and angular momentum quantum numbers.

  • Tuesday, December 13, 2016
    Pheno & Vino Seminar
    “TBA”

    Location: Jadwin Hall, Room 303
    Time: 4:00 PM
    Speaker(s): Eder Izaguirre, Perimeter Institute

  • Thursday, December 15, 2016
    Hamilton Colloquium Series
    “Building a Quantum Computer, Atom by Atom”

    Location: Jadwin Hall, Room A10
    Time: 4:30 PM
    Speaker(s): Christopher Monroe, University of Maryland

    Description: Laser-cooled and trapped atomic ions are standards for quantum information science, acting as qubits with unsurpassed levels of quantum coherence while also allowing near-perfect measurement. When qubit state-dependent optical forces are applied to a collection of ions, their Coulomb interaction is modulated in a way that allows entanglement operations that form the basis of a quantum computer. Similar forces allow the simulation of quantum magnetic interactions, and recent experiments have implemented tunable long-range interacting spin models with up to 25 trapped ions, the largest collection of interacting qubits yet demonstrated. Scaling to even larger numbers can be accomplished by coupling trapped ion qubits to optical photons, where entanglement can be formed over remote distances for applications in quantum communication, quantum teleportation, and distributed quantum computation. By employing such a modular and reconfigurable architecture, it should be possible to scale up ion trap quantum networks to useful dimensions, for future quantum applications that are impossible using classical processors.

  • Monday, February 6, 2017
    High Energy Theory Seminar
    “TBA”

    Location: Bloomberg Lecture Hall
    Time: 2:30 PM
    Speaker(s): TBA, TBA

  • Friday, February 10, 2017
    High Energy Theory Seminar
    “TBA”

    Location: Bloomberg Hall Physics Library
    Time: 1:45 PM
    Speaker(s): TBA, TBA

  • Monday, February 27, 2017
    High Energy Theory Seminar
    “TBA”

    Location: Bloomberg Lecture Hall
    Time: 2:30 PM
    Speaker(s): TBA, TBA

  • Friday, March 10, 2017
    High Energy Theory Seminar
    “TBA”

    Location: Bloomberg Hall Physics Library
    Time: 1:45 PM
    Speaker(s): TBA, TBA

  • Monday, March 13, 2017
    High Energy Theory Seminar
    “TBA”

    Location: Bloomberg Lecture Hall
    Time: 2:30 PM
    Speaker(s): TBA, TBA

  • Friday, March 17, 2017
    High Energy Theory Seminar
    “TBA”

    Location: Bloomberg Hall Physics Library
    Time: 1:45 PM
    Speaker(s): TBA, TBA

  • Monday, March 20, 2017
    High Energy Theory Seminar
    “TBA”

    Location: Bloomberg Lecture Hall
    Time: 2:30 PM
    Speaker(s): TBA, TBA

  • Friday, March 24, 2017
    High Energy Theory Seminar
    “TBA”

    Location: Bloomberg Hall Physics Library
    Time: 1:45 PM
    Speaker(s): TBA, TBA

  • Monday, April 3, 2017
    High Energy Theory Seminar
    “TBA”

    Location: Bloomberg Lecture Hall
    Time: 2:30 PM
    Speaker(s): TBA, TBA

  • Friday, April 7, 2017
    High Energy Theory Seminar
    “TBA”

    Location: Bloomberg Hall Physics Library
    Time: 1:45 PM
    Speaker(s): TBA, TBA

  • Monday, April 17, 2017
    High Energy Theory Seminar
    “TBA”

    Location: Bloomberg Lecture Hall
    Time: 2:30 PM
    Speaker(s): TBA, TBA

  • Friday, April 21, 2017
    High Energy Theory Seminar
    “TBA”

    Location: Bloomberg Hall Physics Library
    Time: 1:45 PM
    Speaker(s): TBA, TBA

  • Monday, May 1, 2017
    High Energy Theory Seminar
    “TBA”

    Location: Bloomberg Lecture Hall
    Time: 2:30 PM
    Speaker(s): TBA, TBA

  • Friday, May 5, 2017
    High Energy Theory Seminar
    “TBA”

    Location: Bloomberg Hall Physics Library
    Time: 1:45 PM
    Speaker(s): TBA, TBA

  • Monday, May 15, 2017
    High Energy Theory Seminar
    “TBA”

    Location: Bloomberg Lecture Hall
    Time: 2:30 PM
    Speaker(s): TBA, TBA

  • Friday, May 19, 2017
    High Energy Theory Seminar
    “TBA”

    Location: Bloomberg Hall Physics Library
    Time: 1:45 PM
    Speaker(s): TBA, TBA