Physics Events

  • Monday, March 27, 2017
    High Energy Theory Seminar
    “RG Flows Across Dimensions and Holography”

    Location: Jadwin Hall
    Time: 2:30 PM
    Speaker(s): Nikolay Bobev, KU Leuven

    Description: Superconformal field theories placed in nontrivial background fields for the metric and the continuous global symmetries exhibit a rich web of RG flows across dimensions. I will discuss several examples of such flows and emphasize some of their universal features. In addition, I will employ non-perturbative tools such as 't Hooft anomaly matching, a-, F-, and c-extremization, and holography to gain a quantitative understanding of some aspects of these theories. Finally, I will discuss the relevance of these results for a microscopic understanding of the entropy of supersymmetric black holes and strings in AdS.

  • Wednesday, March 29, 2017
    Physics Group Meeting
    “Algebraic EE and Holography”

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

    Description:  In the first part of the talk, I’ll explore whether EE’s of subalgebras not organized by position space in a holographic CFT may be useful for bulk reconstruction. In particular I'll explain how the lengths of non-minimal geodesics in AdS3 conical defect backgrounds can be interpreted as the EE's of certain subalgebras in the dual CFT. This part will be based on 1608.02040. In the second part of the talk, I'll discuss how the Ryu-Takayanagi area seems to be a boundary entropy, that is the analog of an edge term one finds when defining EE in a gauge theory, and how one might try to test this. 

  • Friday, March 31, 2017
    High Energy Theory Seminar
    “Lightcone Cut Holography”

    Location: Jadwin Hall, PCTS Seminar Room, 4th Floor
    Time: 1:45 PM
    Speaker(s): Netta Engelhardt, Princeton University

    Description: In this talk, I will give an answer to the question “which QFT states holographically describe the emergence of semiclassical (conformal) geometry?” via a new construct in QFT: the causal density matrix. This new construct relies on the “lightcone cut” approach to spacetime emergence, and generalizes it to arbitrary QFTs (that may or may not have holographic duals). In the presence of a semiclassical spacetime, lightcone cuts explain both the emergence of holographic dimensions and the way in which geometry is encoded in a holographic dual. Properties of the causal density matrix indicate that some features of quantum error correction are more general than AdS/CFT. Within AdS/CFT, I will argue that the “reduced” causal density matrix is dual to the causal wedge.

  • Monday, April 3, 2017
    High Energy Theory Seminar
    “Holographic Complexity: A Progress Report”

    Location: Bloomberg Lecture Hall
    Time: 2:30 PM
    Speaker(s): Rob Myers, Perimeter Institute

    Description: I will describe some recent work studying proposals for computational complexity in holographic theories. I will discuss properties of the new gravitational observables and of complexity in the boundary theory.

  • Tuesday, April 4, 2017
    Precision Frontier Seminar
    “Prospects for direct detection of the Cosmic Neutrino Background”

    Location: Bloomberg Hall Physics Library
    Time: 1:30 PM
    Speaker(s): Matthew Low, Member, School of Natural Sciences, IAS

  • Tuesday, April 4, 2017
    Pheno & Vino Seminar
    “TBA”

    Location: Jadwin Hall, Room 303
    Time: 4:00 PM
    Speaker(s): Yotam Soreq, MIT

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

    Location: Bloomberg Hall Physics Library
    Time: 1:45 PM
    Speaker(s): Jeff Murugan, Member, School of Natural Sciences, IAS; University of Cape Town

  • Monday, April 10, 2017
    High Energy Theory Seminar
    “TBA”

    Location: Jadwin Hall, PCTS Seminar Room
    Time: 2:30 PM
    Speaker(s): Umut G├╝rsoy, Utrecht University

  • Wednesday, April 12, 2017
    Physics Group Meeting
    “TBA”

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

  • Thursday, April 13, 2017
    Hamilton Colloquium Series
    “Unusual Quasiparticle Correlation in Graphene”

    Location: Jadwin Hall, Room A10
    Time: 4:00 PM
    Speaker(s): Philip Kim, Harvard University

    Description: Interactions between particles in quantum many-body systems can lead to a collective behavior. In a condensed matter system consisting of weakly interacting particles, a propagating particle interacting with its surroundings can be viewed as a ‘dressed’ quasiparticle with renormalized mass and other dynamic properties. The lack of screening enables strong Coulomb interactions between charged particles, leading to new collective dynamics. In this talk, I will discuss three examples concerning strongly interacting quasiparticles in graphene. In the first example, it will be shown that the thermally populated electrons and holes to realize Dirac fluid, where a huge violation of Wiedemann-Franz law is observed. The second example is realizing magnetoexcitons to correlated quasiparticles in quantized Landau levels to form magnetoexcitons, which can condense into Bose-Einstein condensation. Finally, we will also discuss another way of correlated quasiparticles in graphene using superconducting proximity effect. Here, we employ the crossed Andreev reflection across thin Type II superconducting electrodes to correlated spatially separated quasiparticles. Under strong magnetic fields, the quantum Hall edge states can carry these quasiparticles.

  • Friday, April 14, 2017
    High Energy Theory Seminar
    “TBA”

    Location: Jadwin Hall, PCTS Seminar Room 407
    Time: 1:45 PM
    Speaker(s): David Meltzer, Yale University

  • Monday, April 17, 2017
    High Energy Theory Seminar
    “Six Point String Scattering: Simulation of Horizon Infallers”

    Location: Bloomberg Lecture Hall
    Time: 2:30 PM
    Speaker(s): Eva Silverstein, Stanford University

  • Friday, April 21, 2017
    High Energy Theory Seminar
    “Continuous and Discrete Gauge Symmetries in F-Theory”

    Location: Bloomberg Hall Physics Library
    Time: 1:45 PM
    Speaker(s): Mirjam Cvetic, University of Pennsylvania

    Description: We present recent developments in F-theory compactifications and focus on advances in constructions of globally consistent F-theory compactifications with Abelian and discrete gauge symmetries, emphasizing technical advances and insights into higher-rank gauge symmetries. We also present recent studies of the origin of Abelian and discrete symmetries in Heterotic/F-theory duality. Furthermore, a new construction of Type IIB compactification with non-Abelian discrete gauge symmetry is highlighted.

  • Monday, April 24, 2017
    High Energy Theory Seminar
    “TBA”

    Location: Jadwin Hall
    Time: 2:30 PM
    Speaker(s): Onkar Parrikar, University of Pennsylvania

  • Wednesday, April 26, 2017
    Physics Group Meeting
    “TBA”

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

  • Thursday, April 27, 2017
    Hamilton Colloquium Series
    “TBA”

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

  • 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
    “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
    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
    Donald R. 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
    “TBA”

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

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

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

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

  • 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): TBA, TBA

  • 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

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

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

  • Monday, May 22, 2017
    High Energy Theory Seminar
    “TBA”

    Location: Bloomberg Lecture Hall
    Time: 2:30 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

  • Friday, May 26, 2017
    High Energy Theory Seminar
    “TBA”

    Location: Jadwin Hall
    Time: 1:45 PM
    Speaker(s): TBA, TBA

  • Sunday, December 3, 2017
    Simons Workshop

    Time: 7:00 AM