Physics Events

  • Monday, April 24, 2017
    High Energy Theory Seminar
    “Entanglement Entropy and the Colored Jones Polynomial”

    Location: Jadwin Hall
    Time: 2:45 PM
    Speaker(s): Onkar Parrikar, University of Pennsylvania

    Description: We will study the entanglement structure of states in Chern-Simons (CS) theory obtained by performing the Euclidean path-integral on certain highly non-trivial 3-manifolds, namely link complements in S^3. This will allow us to assign an entanglement entropy to any bi-partition of an n-component link into sub-links; these entropies in fact provide framing independent link-invariants. In U(1) CS theory, we will give a general formula for the entanglement entropy across a bi-partition of a generic n-link into sub-links. In the non-Abelian SU(2) theory, we study various interesting 2 & 3-links including the Whitehead link and Borromean rings, both of which have non-trivial entanglement structures. If time permits, we will consider SL(2,C) and mention connections with gravity and hyperbolic geometry.

  • Wednesday, April 26, 2017
    Physics Group Meeting
    “On the Operator Content of dS”

    Location: Bloomberg Hall Physics Library
    Time: 1:45 PM
    Speaker(s): Dionysios Anninos, Member, School of Natural Sciences, IAS

    Description: We discuss the operator content of an asymptotic dS universe, using as an example the Vasiliev theory of massless interacting higher spin particles in a dS vacuum.

  • Thursday, April 27, 2017
    Hamilton Colloquium Series
    “LHC at 13 TeV”

    Location: Jadwin Hall, Room A10
    Time: 4:00 PM
    Speaker(s): James Olsen, Princeton University

    Description: In 2015 the Large Hadron Collider (LHC) resumed proton collisions at a new record energy of 13 trillion electronvolts (13 TeV) and doubled the interaction rate achieved in the 2010-2012 run. With the discovery of the Higgs boson in Run 1, the search for new particles and interactions beyond those described by the standard model has intensified in Run 2, during which the amount of data collected has already eclipsed the previous datasets at 7 and 8 TeV. I will describe the challenges presented by the new running conditions, how those challenges were met by the CMS experiment, and selected results from the 13 TeV data. Near-term and long-term goals will also be discussed, including detector upgrades targeting the High-Luminosity LHC era set to begin in the middle of the next decade.

  • Friday, April 28, 2017
    High Energy Theory Seminar
    “TBA”

    Location: Jadwin Hall, PCTS Seminar Room
    Time: 1:45 PM
    Speaker(s): Wolfger Peelaers, Rutgers University

  • Monday, May 1, 2017
    PCTS Seventh Annual Lecturer
    “TBA”

    Location: TBA
    Time: 9:00 AM
    Speaker(s): Charles Kane, University of Pennsylvania

    Description: Schedule of Talks and Seminars will be announced soon.

  • Tuesday, May 2, 2017
    PCTS Seventh Annual Lecturer
    “Symmetry Protected Topological Insulators and Semimetals”

    Location: Jadwin Hall, PCTS, Room 407
    Time: 2:30 PM
    Speaker(s): Charles Kane, University of Pennsylvania

    Description: We will discuss recent developments in topological band theory, in which the combination of time reversal symmetry and crystal symmetries lead to novel insulating and semimetallic states. After introducing the interplay between symmetry and topology in the electronic structure of crystalline materials, we will discuss several examples of protected metallic states that can occur on the surface and in the bulk. These include Dirac semimetals in two and three dimensions, double Dirac semimetals and line node semimetals as well as new classes of topological crystalline insulators with surface states that violate symmetry enhanced doubling theorems. We will contrast semimetallic behavior that arises due to band inversion with filling enforced semimetals that arise due to the existence of non-symmorphic space group symmetries.

  • Tuesday, May 2, 2017
    Pheno & Vino Seminar
    “TBA”

    Location: Jadwin Hall, Room 303
    Time: 4:00 PM
    Speaker(s): Brian Batell, University of Pittsburgh

  • Wednesday, May 3, 2017
    PCTS Seventh Annual Lecturer
    “TBA”

    Location: TBA
    Time: 9:00 AM
    Speaker(s): Charles Kane, University of Pennsylvania

    Description: Schedule of Talks and Seminars will be announced soon.

  • Thursday, May 4, 2017
    The Hamilton Lecture
    “Topological Phases of Matter”

    Location: McDonnell, Room A02
    Time: 8:00 PM
    Speaker(s): Charles Kane, University of Pennsylvania

    Description: Matter can arrange itself in the most ingenious ways. In addition to the solid, liquid and gas phases that are familiar in classical physics, quantum mechanics enables the existence of electronic phases of matter that can have both exotic and useful properties. In the last century, the thorough understanding of the simplest quantum electronic phase - the electrical insulator - enabled the development of the solid state electronics technology that is ubiquitous in today's information age. In the present century, new "topological" electronic phases are being discovered that may enable future technologies by allowing the seemingly impossible to occur: indivisible objects, like an electron or a quantum bit of information, can be split into two, allowing mysterious features of quantum mechanics to be harnessed. Our understanding of topological phases, which was celebrated by the 2016 Nobel Prize in physics, builds on deep ideas in mathematics. We will try to convey that they are as beautiful as they are fundamental.

  • Friday, May 5, 2017
    PCTS Seventh Annual Lecturer
    “Clustering in Luttinger Liquids and the Quantum Hall Effect”

    Location: Jadwin Hall, PCTS, Room 407
    Time: 11:00 AM
    Speaker(s): Charles Kane, University of Pennsylvania

    Description: The coupled wire model is a simple formulation of the fractional quantum Hall effect that provides an explicit connection between the bulk topological order and the edge conformal field theory in the context of a solvable electronic model of coupled Luttinger liquids. Here we will consider the effects of pairing and higher order clustering on the Luttinger liquids. We will argue that a single Luttinger liquid can exhibit a pairing transition that is related to the transition between a topological and trivial superconductor. Incoporating pairing in the coupled wire model allows a simple formulation of the Moore-Read state and it's cousins. We will go on to consider higher order clustering of k particles, which leads to a formulation of the Read-Rezayi $Z_k$ parafermion states and identify a class of "orbifold" quantum Hall states that generalize the $Z_4$ Read Rezayi state.

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

    Location: Bloomberg Hall Physics Library
    Time: 1:45 PM
    Speaker(s): Douglas Stanford, Member, School of Natural Sciences, IAS

  • Monday, May 8, 2017
    High Energy Theory Seminar
    “TBA”

    Location: Bloomberg Lecture Hall
    Time: 2:30 PM
    Speaker(s): Nikita Nekrasov, Stonybrook University

  • Wednesday, May 10, 2017
    Physics Group Meeting
    “TBA”

    Location: Bloomberg Hall Physics Library
    Time: 1:45 PM
    Speaker(s): Pavel Putrov, Member, School of Natural Sciences, IAS

  • Thursday, May 11, 2017
    PCTS Spring Program
    “Bangs, Bounces, Black Holes, and Bubbles: Where General Relativity Meets Cosmology”

    Location: Jadwin Hall, Room 407, PCTS Seminar Room
    Time: 8:00 AM
    Note: FREE, but REQUIRED REGISTRATION is limited and available online

    Description: Workshop Organizers: Anna Ijjas & Paul Steinhardt, PCTS

    SPEAKERS

    Claudia de Rham, Imperial College
    Rehan Deen, University of Pennsylvania
    Will East, Perimeter Institute
    Raphael Flauger, UCSD
    David Garfinkle, Oakland University
    Ruth Gregory, Durham University
    Luis Lehner, Perimeter Institute
    Jean-Luc Lehners, MPG
    Hermann Nicolai, MPG
    Burt Ovrut, University of Pennsylvania
    Vasilis Paschalidis, Princeton University
    Frans Pretorius, Princeton University
    Rachel Rosen, Columbia University
    Andrew Tolley, Imperial College
    http://pcts.princeton.edu/pcts

  • Friday, May 12, 2017
    PCTS Spring Program
    “Bangs, Bounces, Black Holes, and Bubbles: Where General Relativity Meets Cosmology”

    Location: Jadwin Hall, Room 407, PCTS Seminar Room
    Time: 8:00 AM
    Note: FREE, but REQUIRED REGISTRATION is limited and available online

    Description: Workshop Organizers: Anna Ijjas & Paul Steinhardt, PCTS

    SPEAKERS

    Claudia de Rham, Imperial College
    Rehan Deen, University of Pennsylvania
    Will East, Perimeter Institute
    Raphael Flauger, UCSD
    David Garfinkle, Oakland University
    Ruth Gregory, Durham University
    Luis Lehner, Perimeter Institute
    Jean-Luc Lehners, MPG
    Hermann Nicolai, MPG
    Burt Ovrut, University of Pennsylvania
    Vasilis Paschalidis, Princeton University
    Frans Pretorius, Princeton University
    Rachel Rosen, Columbia University
    Andrew Tolley, Imperial College
    http://pcts.princeton.edu/pcts

  • Saturday, May 13, 2017
    PCTS Spring Program
    “Bangs, Bounces, Black Holes, and Bubbles: Where General Relativity Meets Cosmology”

    Location: Jadwin Hall, Room 407, PCTS Seminar Room
    Time: 8:00 AM
    Note: FREE, but REQUIRED REGISTRATION is limited and available online

    Description: Workshop Organizers: Anna Ijjas & Paul Steinhardt, PCTS

    SPEAKERS

    Claudia de Rham, Imperial College
    Rehan Deen, University of Pennsylvania
    Will East, Perimeter Institute
    Raphael Flauger, UCSD
    David Garfinkle, Oakland University
    Ruth Gregory, Durham University
    Luis Lehner, Perimeter Institute
    Jean-Luc Lehners, MPG
    Hermann Nicolai, MPG
    Burt Ovrut, University of Pennsylvania
    Vasilis Paschalidis, Princeton University
    Frans Pretorius, Princeton University
    Rachel Rosen, Columbia University
    Andrew Tolley, Imperial College
    http://pcts.princeton.edu/pcts

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

    Location: Jadwin Hall, PCTS Seminar Room, 4th Floor
    Time: 2:30 PM
    Speaker(s): Gustavo Joaquin Turiaci, Princeton University

  • Wednesday, May 17, 2017
    Physics Group Meeting
    “TBA”

    Location: Bloomberg Hall Physics Library
    Time: 1:45 PM
    Speaker(s): Dima Krotov, Member, School of Natural Sciences, IAS

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

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

  • Wednesday, May 24, 2017
    Physics Group Meeting
    “TBA”

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

  • Sunday, December 3, 2017
    Simons Workshop

    Time: 7:00 AM