• High Energy Theory Seminar: (Stochastic Particle Production in the Early Universe)

    David Rittenhouse Laboratory, 2N36

    Mustafa Amin (Rice University)

    I will show some intriguing hints of universality in the occupation number of spectator/daughter fields that experience repeated stochastic particle production during inflation and reheating. The calculations are aided by a remarkable mathematical mapping between stochastic particle particle production in cosmology and current conduciton in disordered wires. Time permitting, I will discuss potential implications of the results for density perturbations from the early universe.

    view more..

  • Astro Seminar: **POSTPONED UNTIL THE FALL**

    David Rittenhouse Laboratory, A4

    David Kipping (Columbia)

  • Condensed Matter Seminar: "The physical chemistry of natural selection: How can we explain the high yields and high rates of biochemical reactions?"

    David Rittenhouse Laboratory, A4

    Jean-Louis Sikorav (Ministère de l'Economie et des Finances)

    The goal of this seminar is to present the main findings of an ongoing inquiry of the foundations of biology (1). The purpose of this investigation is to describe the elements, the logic and the principles of biology, and to construct biological theories using the language and the methods employed in other disciplines. This work brings to the fore the existence of a unity of knowledge, also revealed through the study of the science of research shared by all disciplines (2).

    view more..

  • Special Seminar: "Exploiting the roles of photon spin and electron spin in light-matter interaction"

    David Rittenhouse Laboratory, A6

    Li He (University of Minnesota)

    In light-matter interaction, the conservation of angular momentum requires the angular momentum transfer between light and matter, which consequently couples light polarization to various state variables of materials, such as mechanical motion, magnetization or charge current, and gives rise to a plethora of intriguing phenomena. In this talk, I will discuss the angular momentum transfer in two different scenarios with a focus on the roles of photon and electron spin.

    view more..

  • Graduate Arts & Sciences Commencement