News & Events

  • Senior Honors Thesis - Jack Neustadt

    Thursday May 25, 2017 4:30 pm Wilder 104

    Title: Optical Observations of Galactic Supernova Remnants

    Abstract: We present our optical observations of two supernova remnants located within the Milky Way Galaxy. First, we present observations of the radio-faint remnant G64.5+0.9. Despite its small angular diameter (~8ʹ) and nearly spherical morphology suggestive of a relatively young age, the current...

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  • Senior Honors Thesis - Samuel Greydanus

    Wednesday, May 24, 2017 4:00 pm Wilder 104

    Title: Approximating Matrix Product States with Machine Learning

    Abstract: Obtaining compressed representations of slightly entangled systems is an important open problem in quantum mechanics. The Density Matrix Renormalization Group (DMRG) algorithm introduced by S. R. White in 1992 has been successful at solving one-dimensional cases but does not...

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  • Computational Stellar Evolution focuses on the development of a two-dimensional computer models which predict the evolution of stars. These models will be used to study the effects of magnetic fields and rotation on the evolution of low mass stars. One application of these models is to study the lithium abundance in metal-poor stars to determine the primordial abundance of lithium, which is a key constraint on big bang nucleosynthesis. 

    FACULTY CONTACT:...

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  • Title: "The Hidden Monsters: New Windows on the Cosmic Evolution of Supermassive Black Holes" (Video)

    Abstract: At the heart of essentially every large galaxy in the Universe lies a supermassive black hole. In the past decade, surveys of the extragalactic sky have made great progress in understanding the cosmic growth of these black holes, as they "eat" surrounding material and radiate as active galactic...

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  • Title: "Kinetic Plasma Turbulence in Space and Astrophysical Plasmas" (Video)

    Abstract:  Turbulence is a ubiquitous process in space and astrophysical plasmas that serves to mediate the transfer of large-scale motions to small scales at which the turbulence can be dissipated and the plasma heated. The nature of the dissipation and heating ultimately determines the...

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  • Title: "Kinetic Plasma Turbulence: New Insights Into Its Fundamental Nature and Implications for Fusion Energy" (Video)

    Abstract:  Turbulence is ubiquitous in both space and laboratory plasmas. These plasmas are often hot and/or diffuse, which requires the use of kinetic theory, the description of particle distribution functions in a high-dimensional phase space. ...

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  • Title: New Perspectives on Magnetic Reconnection — From Plasmoid Instability to Self-Generated Turbulence  (Video)

    Abstract:  Magnetic reconnection is a fundamental physical process that allows magnetic field lines to break the frozen-in constraint of ideal magnetohydrodynamics (MHD), changing magnetic topology while at the same time converting stored magnetic energy into plasma energy. It is generally...

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  • Title: Neutral Naturalness   (Video)

    Abstract: I explain the hierarchy problem of the standard model of particle physics, and discuss some of the ideas which have been put forward to resolve it. I then show that a specific class of theories, built around a framework known as neutral naturalness, can help address this problem while remaining consistent with all current experimental tests. I explain that while...

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  • Title: "Magnetic Reconnection in Plasmas" (Video)

    Abstract: Magnetic reconnection is the process whereby a change in topology of magnetic field lines allows for a rapid conversion of magnetic energy into thermal and kinetic energy of the surrounding plasma. This physical process plays a key role in many astrophysical and laboratory contexts, ranging from magnetospheric substorms, solar eruptions, sawtooth...

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  • Title: "Toward Optically Defined Micromechanical Systems" (Video)

    Abstract: Mechanical systems are ubiquitous throughout society, from oscillators in timekeeping devices to accelerometers and electronic filters in automobiles and cell phones. They also represent an indispensable set of tools for fundamental science, providing a means of sensing atomic-scale forces and masses or even the minuscule spacetime...

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