1. Physics Colloquium

    "Harmony of Scattering Amplitudes: From Quantum Chromodynamics to Supergravity"

    Presented by Zvi Bern, UCLA

    Tuesday, November 12, 2013, 3:30 pm
    Large Seminar Room, Bldg. 510

    Hosted by: Rob Pisarski

    Recent years have seen enormous advances in our ability to compute elementary-particle scattering amplitudes in quantum field theory, which is the subject of a four month program at the Simons Center. Associated with these advances are the discovery of remarkable new structures obeyed by scattering amplitudes. Examples from particle collider physics and supergravity theories will be given. In collider physics this includes new precision calculations of multi-jet process using quantum chromodynamics. Supergravity theories are shown to be remarkably well behaved in the ultraviolet as a consequence of a newly uncovered connection to gauge theories which shows that gravitons can be viewed as two copies of gluons.