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A place to work on math homework, study with classmates, or speak to a math tutor.

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A place to work on math homework, study with classmates, or speak to a math tutor.

E-mail to Friend

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Light refreshments will be served

E-mail to Friend

A place to work on math homework, study with classmates, or speak to a math tutor.

E-mail to Friend

E-mail to Friend

A place to work on math homework, study with classmates, or speak to a math tutor.

E-mail to Friend

E-mail to Friend

RKC lobby - financial clearance, materials pick up, water test tube collection

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Website: Event Website

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The competition is organized by Math-M-Addicts New York, Inc. The Bard Math Circle hosts this event to promote a culture of mathematical problem solving and mathematics enrichment in the mid-Hudson Valley.

Website: Event Website

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Reem-Kayden Center

Julia Les

Maxwell McKee

Lydia Meyer

Eric Reed

Reem-Kayden Center Laszlo Z. Bito '60 Auditorium

Michael Durst

Candidate for the position in Physics

Biomedical optics uses lasers, fluorescence, and other clever tools to extract images from beneath the surface of biological tissue. While MRI and ultrasound imaging are fully capable of providing images from deep within the body, light-based microscopy provides superior resolution, allowing one to see details on the cellular level. This talk will describe efforts to use optics to look beneath the surface of the body without making an incision. Nonlinear optical microscopy techniques such as two-photon absorption, temporal focusing, and photothermal imaging will be discussed. With applications in cancer research, nanoparticle characterization, fiber optic endoscopes, and in vivo imaging, these efforts demonstrate the exciting ways in which optical physics can be employed to enhance biomedical imaging.

Reem-Kayden Center Laszlo Z. Bito '60 Auditorium

Researchers are rapidly improving their abilities to manipulate electromagnetism and matter at the quantum level. Applications may exploit the extreme sensitivity, information capacity and/or low energies of quantum electromagnetic systems, but to be useful these technologies will also have to be robust and flexible. Moreover, in order to engineer quantum electromagnetic systems, we will need intuitive modeling techniques capable of describing these complex systems. In short, we need quantum generalizations of electrical engineering techniques.

I will describe some recent efforts that take a stab at developing an engineering perspective on quantum optics, both experimentally and theoretically. Questions at the center of this work include: can we design one quantum optical device to control another? And to what end? How might this approach be different from a classical system controlling a quantum one? Electrical circuits would be intractable without Kirchhoff's laws and can we analyze a quantum network in some analogous way?

Reem-Kayden Center Laszlo Z. Bito '60 Auditorium

Kerstin Nordstrom

Candidate for the position in Physics

I will present recent work on two systems we have studied in our lab: granular materials and epithelial cell sheets. At first blush, these systems seem completely different. But blur your eyes a bit, and you start to see the similarities: They are both dense collections of particles. The systems' discreteness and density beget the emergence of the same cooperative and frustrated dynamics, even though the particles and interactions in each system are different. For both studies, we introduce novel experimental techniques and collective motion metrics. We also compare and contrast the collective behavior of inanimate and living systems.

Hegeman 204

Hal Haggard

Candidate for the position in Physics

At the Planck scale (10^-33 cm), a quantum behavior of the geometry of space is expected. I will discuss new evidence for the idea that this can be achieved by directly quantizing space itself. In particular, we will consider the Bohr-Sommerfeld spectrum associated to the volume of a tetrahedron and compare it with the quantization of a grain of space found in loop gravity. One of the great challenges of the 21st century will be to understand how to empirically test for the quantization of space. I will conclude with some speculations about how to tackle this problem.

Hegeman 107

Dr. Paula Fekete, Assistant Professor

Department of Physics and Nuclear Engineering

US Military Academy at West Point, NY

Graphene is a single atomic layer of carbon atoms bound in a hexagonal lattice. It was first produced experimentally in 2004 by a team of researchers from Manchester, UK, and Chernogolovka, Russia, through mechanical exfoliation. This event started the “graphene revolution,” which spread quickly around the world attracting the attention of scientists and engineers alike. Graphene’s discovery was awarded the Physics Nobel Prize in 2010 and the number of publications and patents related to it is still sharply increasing. This talk will give an overview of some of graphene’s surprising electrical and transport properties that arise due to its two-dimensional structure. Namely, graphene’s electrons, moving in the periodic lattice potential of the two-dimensional crystal, form energy bands. These band energies can be described by a wave equation in which the mass of electrons is effectively changed. In a strong magnetic field, the cyclotron orbits of electrons are quantized and Landau levels form. In 1976, Hofstadter showed that, for a two-dimensional electron system, the interplay between these two quantum effects can lead to a fractal-type energy spectrum known as “Hofstadter’s Butterfly.” The talk presents results that indicate that the Hofstadter Butterfly appears in graphene’s energy spectrum as well.

RKC 115

Jarrett Moyer

Candidate for the position in Physics

Transition-metal complex oxides are ideal systems for studying condensed matter physics due the wide variety of novel phenomena that they can display, such as high temperature superconductivity, colossal magnetoresistance, and multiferroicity. Their magnetic properties can often be tuned through small variations in chemical doping, strain, or thickness. This makes oxides promising for use in nextgeneration device applications, in which the magnetism will be controlled by external factors other than magnetic fields. A relatively unexplored method to induce large changes in the magnetization is to control the degree of spin frustration within a frustrated magnetic oxide. In this talk, I will discuss recent magnetic spectroscopy measurements on the magnetic structure of iron-doped cobalt ferrite (Co1xFe2+xO4). We observed that as the degree of iron doping increases, there is a large, non-linear increase in the magnetization that is partially caused by a decrease in the spin frustration of the divalent cations. This change in spin frustration is a direct result of the Co2+Fe3+ exchange interactions having different strengths than the corresponding Fe2+-Fe3+ exchange interaction. I will propose a second, reversible method of controlling this spin frustration: the application of an electric field to the spinel ferrite. Under an applied electric field, the mobile electrons within the ferrite will rearrange themselves to screen the field, and, in effect, this will change the ordering of the magnetic cations. This will alter the frustration within the film, thus allowing the degree of frustration and the magnetization to be controlled with an electric field. To make this device non-volatile, the electric field can be applied with an adjacent ferroelectric layer. I will conclude this talk by discussing recent work on the integration of Fe3O4 with perovskites, which is the first step towards achieving non-volatile, electrically driven magnetic switching in a ferroelectric perovskite/spinel ferrite heterostructure.

Reem-Kayden Center Laszlo Z. Bito '60 Auditorium

Nelia Mann

Candidate for the position in Physics

The standard model of quarks and leptons is an extremely powerful tool in particle physics. However, it is not the only way of thinking about the particles we study. In my talk I will discuss some interesting patterns in the spectra and behaviors of mesons (and baryons) which can be explained by thinking of these particles as strings rather than bound states of quarks. I will show you how string theory can be used to produce concrete models for certain processes, such as proton/proton scattering, and how these models can be directly compared with the data. This allows string theory to become useful in understanding current particle physics experiments.

RKC 111

David Mattingly

Candidate for the position in Physics

Quantum gravity, a theory that consistently incorporates both quantum mechanics and general relativity, has been an outstanding problem in physics for almost 80 years. Most of the progress on quantum gravity has been theoretical and, as a result, there are a number of different models for quantum gravity and the fundamental nature of space and time. Only in the last decade have experimental advances made it possible to test some of these models and construct a phenomenology. In this talk we will explain, in a fairly non-technical manner, what goes into a quantum theory of gravity, why models have traditionally been so difficult to test, and aspects of the now rich phenomenology. As an example, we will concentrate on how new ultra-high energy cosmic ray data can differentiate between models of quantum gravity.

Reem-Kayden Center

Emin Atuk, Tedros Balema, Griffin Burke, Kathleen Burke, Desi-Rae Campbell, Kody Chen, Yan Chu, Matt Dalrymple, Tom Delaney, Georgia Doing, Leila Duman, Colyer Durovich, Matthew Greenberg, Sumedha Guha, Asad Hashmi, Emily Hoelzli, Nushrat Hoque, Seoyoung Kim, Muhsin King, Midred Kissai, Julia Les, Lei Lu, Yuexi Ma, Katherine Moccia, Gavin Myers, Van Mai Nguyen Thi, Matthew Norman, Molly North, Nathaniel Oh, Ian Pelse, Linh Pham, Christina Rapti, Joanna Regan, Diana Ruggiero, Iden Sapse, Clara Sekowski, Sabrina Shahid, Min Kyung Shinn, Anuska Shrestha, Eva Shrestha, Shailab Shrestha, Olja Simoska, Ingrid Stolt, Henry Travaglini, Shuyi Weng, Clare Wheeler, Noah Winslow

Advisers: Craig Anderson, Sven Anderson, Paul Cadden-Zimansky, John Cullinan, Olivier Giovannoni, Swapan Jain, Brooke Jude, Christopher LaFratta, Robert McGrail, Emily McLaughlin, Keith O’Hara, Bruce Robertson, Lauren Rose, Rebecca Thomas

Bard College Campus

Reem-Kayden Center

Adenike Akapo, Raed, Al-Abbasee Ammar Al-Rubaiay, Perry Anderson, Michael Anzuoni, Jeremy Arnstein, Nina Bar-Giora, Ian Barnett, Brendan Beecher, Abhinanda Bhattarcharyya, Cara Black, Sheneil Black, Laura Bradford, Cameron Brenner, Ross Cameron, Emily Carlson, Matteo Chierchia, Diana Crow, Kierstin Daviau, Jonathan De Wolf, Ha Phuong Do Thi, Katharine Dooley, Alexia Downs, Kimara DuCasse, Amy Eisenmenger, Jose Falla, Margo Finn, Joseph Foy, Prabarna Ganguly, Nabil Hossain, Matthew Hughes, Linda Ibojie, Miles Ingram, Lena James, Blagoy Kaloferov, Sun Bin Kim, Thant Ko Ko, Ruth Lakew, Hsiao-Fang Lin, Sam Link, Amy List, Weiying Liu, Julia Lunsford, Iliana Maifeld-Carucci, Claire Martin, Andres Medina, Jose Mendez, Tiago Moura, Jonathan Naito, Anam Nasim, Rachit Neupane, Mark Neznansky, Jeffrey Pereira, Liana Perry, Anisha Ramnani, Lydia Rebehn, Nolan Reece, Jonah Richard, Loralee Ryan, Perry Scheetz, Joy Sebesta, Erin Smith, Will Smith, Frank Stortini, James Sunderland, Oliver Switzer, Jacqueline Villiers, Weiqing Wang, Jasper Weinrich-Burd, Michael Weinstein, Layla Wolfgang, Fanya Wyrick-Flax, Sara Yilmaz, Anis Zaman, Wancong Zhang, Feifan Zheng

RKC 111

Andrew Skinner

Candidate for the position in Physics

In the transmon quantum bit, or qubit, current oscillates back and forth between two superconducting islands separated by a Josephson tunnel junction. One expects from conservation of momentum and energy that the switching of the current would cause the substrate to vibrate. These quantized lattice vibrations are known as phonons. For a representative model transmon we derive the phonon emission pattern and numerically integrate the device's corresponding decoherence and relaxation rates.

RKC 115

Thelma Berquo

Candidate for the position in Physics

I will report on the investigation of interactions of the antiferromagnetic iron oxide ferrihydrite by comparing magnetic properties of synthetic uncoated and coated nanoparticles. Four different coating agents (sugar, alginate, lactate and ascorbate) were employed to prepare sub-samples from the same batch of ferrihydrite, and both magnetic and non-magnetic techniques were used to characterize the samples. I will present results showing that coating agent caused a dramatic change in the magnetic properties of these nanoparticles. In addition, I will show how the results obtained from studying synthetic ferrihydrite can help us to better understand the magnetic properties of Fe microbial mat deposited on hydrothermal vents at Loihi Seamount (Hawaii).

Hegeman 308

Tristan Hübsch

Professor of Physics, Howard University

Symmetry is recognized throughout nature and our descriptions of it. Mathematically, it requires that varying some quantity results in no observable change: rotate a well-formed clover leaf by 120 degrees, and it looks the same. Supersymmetry is such a transformation, the only one known to guarantee our Universe from decaying into another, and then another, and again, and again. Yet, this transformation maps physical quantities measured in terms of ordinary numbers into quantities measured in numbers that square to zero. The study of this supersymmetry being underway for about half a century, it is surprising that a complete (so-called off-shell) representation theory is only now emerging---and it includes certain binary encryption codes, of the kind used by your browser to insure that the downloaded page is a faithful copy of the original on a web-site! This fascinating syzygy of diverse ideas opens doors to new discoveries in physics, mathematics and encryption alike. This talk does not assume any advanced background in mathematics or physics.

Refreshments will be served afterwards in the Albee Math Lounge.

Website

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Reem-Kayden Center Laszlo Z. Bito '60 Auditorium

The development of almost all modern technology relies on a firm understanding of the concepts of electricity and magnetism, and these concepts are at the heart of fundamental explanations of most physical phenomena. The historical evolution of these concepts traces back thousands of years and took a number of surprising, unorthodox, and occasionally tragic turns before the rules governing electricity and magnetism were codified. In this talk, intended for a general audience, I'll review some of the key experiments and insights of past centuries that led to our present theories.