Past Events

  • Condensed Matter seminar: "Engineering new materials from old materials"

    David Rittenhouse Laboratory, A4

    Cory Dean, Columbia University

    Graphene is probably the best known "exfoliatable" material, in which a  two-dimensional sheet of carbons atoms, just one atom thick, can be peeled from a bulk piece of graphite.  However this represents just one of a larger class of van der Waals materials, in which atomic monolayers can be mechanically isolated from the bulk.  The capability to integrate these materials with one another provides an exciting  opportunity  in which we can "mix and match" the constituent material properties, by fabrication of multi-layered heterostructures.  In this talk

  • Astro Seminar: "Weak Lensing in the Nonlinear Regime"

    David Rittenhouse Laboratory, A4

    Jia Liu (Princeton)

    Within the next decade, galaxy and CMB lensing datasets of unprecedented precision will come online from large surveys (DES, HSC, LSST, Euclid, WFIRST, AdvACT, SPT-3G, CMB-S4, etc.).

  • Math-Bio seminar: "Grand challenges in phylogenomics"

    Carolyn Lynch Laboratory, 318

    Tandy Warnow, University of Illinois

    Estimating the Tree of Life will likely involve a two-step procedure, where in the first step trees are estimated on many genes, and then the gene trees are combined into a tree on all the taxa. However, the true gene trees may not agree with with the species tree due to biological processes such as deep coalescence, gene duplication and loss, and horizontal gene transfer.

  • High Energy Seminar: "TBA"

    David Rittenhouse Laboratory, 2N36

    Mark Mezei (Princeton)

  • Condensed Matter seminar: "Roughness-induced criticality and the statistical mechanics of turbulence in pipes and soap films"

    David Rittenhouse Laboratory, A4

    Nigel Goldenfeld, University of Illinois

    Are fluid turbulence and critical phenomena analogous to one another? In this talk, I explain that this connection may be deeper than has been previously thought. Indeed, I argue that one can use these insights to understand turbulence, in an attempt to emulate the pattern of discovery which led to the solution of the phase transition problem.

  • Astro Seminar: "Towards Accurate Predictions for the Clustering of Galaxies in Redshift Space"

    David Rittenhouse Laboratory, A4

    Emanuele Castorina (Berkeley)

    The galaxy distribution across cosmic time contains a wealth of cosmological information. In the era of precision cosmology, galaxy surveys like DES,HSC,DESI,Euclid,LSST and others, would deliver very accurate measurements of cosmological observables, like the power spectrum or the correlation function. This incredible experimental effort requires the theory and modeling of the the clustering of large scale structure to reach the same level of accuracy, typically at the order of a %, over a wide range of scale. And there is no obvious path to this goal.

  • Biomedical & Life Sciences Career Fair

    SMILOW CENTER FOR TRANSLATIONAL RESEARCH COMMONS/AUDITORIUM, 3400 CIVIC CENTER BOULEVARD

    Employers will be on campus during the fair to talk to you about their full-time position, future opportunities, and to answer your questions. This fair is only for PhD students and postdocs, and so they are looking for candidates with your STEM knowledge, research abilities, and experiences. See the information below to see the current list of registered employers - this list will be updated as additional employers register.

  • "Decoding Your Mental GPS: Transcendental Numbers in the Brain"

    World Cafe Live 3025 Walnut Street

    Professor Vijay Balasubramanian

    The brain uses specialized neurons known as place and grid cells to keep track of location. The discovery of the latter earned researchers a Nobel Prize, but the way the brain encodes and decodes this information is still a mystery. Now, a team of University of Pennsylvania researchers led by Vijay Balasubramanian has a theory for how grid cells work together to pinpoint an organism’s location on a mental map. He’ll explain how the brain’s many overlapping grids are connected by a special ratio, organizing them into something akin to the decimal system.  

  • Math-Bio seminar: "Modeling RNA local splicing variations from large heterogeneous datasets"

    Carolyn Lynch Laboratory, 318

    Yoseph Barash, University of Pennsylvania

    Alternative splicing (AS) of genes is a key contributor to transcriptome variations and numerous disease. RNA-Seq experiments produce millions of short RNA reads and are commonly used to assess alternative splicing variations in one of two ways: Full gene isoform quantification, or relative abundance of binary AS events such as exon skipping. In this talk I will present a new framework we developed, based on gene splice graphs, to define, quantify and visualize splicing variations.

  • High Energy Seminar: "AdS_2 Holography and Non-extremal Black Holes"

    David Rittenhouse Laboratory, 2N36

    Ioannis Papadimitriou (SISSA)

    I will present aspects of AdS_2 holography for a specific Einstein-Maxwell-Dilaton model that is obtained by Kaluza-Klein reduction from pure AdS_3 gravity with negative cosmological constant. In particular, I will derive the one-dimensional holographic dual for both running and constant dilaton solutions, and I will discuss the connection with the Sachdev-Ye-Kitaev model.