So long to our 2014 Physics and Biological Physics Graduates

21 05 2014

The Physics Department wishes our 2014 physics and biological physics graduates success and happiness as they begin their new careers and education.

  • Evan Fader, Software Engineer, Amazon
  • Yuri Gloumakov (biological physics major), Graduate Student, Yale University, PhD program in mechanical engineering
  • Samuel Goldberg, Research Assistant, Federal Reserve Bank of Chicago
  • Gil Henkin, Graduate Student, McGill University, M.Sc. thesis degree program in bionanomachines
  • Skyler Kasko, Graduate Student, UC Santa Barbara, PhD program in physics
  • Michael Kosowsky, Graduate Student, Harvard University, PhD program in physics (NSF Graduate Fellowship award winner)
  • Brendan Reardon, Library and Technology Services, Brandeis University
  • Kathryn E. Weil, Graduate Student, Dartmouth College, PhD program in Astronomy

 



Michael Kosowsky ’14 receives NSF Graduate Research Fellowship

24 04 2014

KosowskyMichael Kosowsky ’14, who majored in both physics and mathematics at Brandeis, has been awarded a National Science Foundation Graduate Research Fellowship in astronomy and astrophysics.  The fellowships, which are awarded based on a national competition, provide three full years of support for Ph.D. research and are highly valued by students and institutions. Kosowsky worked with Prof. David Roberts in the Physics Department on analyzing the polarization of the X-ray binary SS 433 with the purpose of figuring out the magnetic field structure of the source.  He will be pursuing a Ph.D. in physics at Harvard University starting this fall.

Other 2014 NSF Fellowship recipients from Brandeis include:

Alex Dainis  (BS ’11, Biology, Film, Television, Interactive Media), Stanford University
Abby Finkelstein (BS ’13, Neuroscience),  Arizona State University
Lamia Harper (BS ’12, Biology), NYU
Ariel Hyre  (BS ’13,  Chemistry), Boston University
Anatoly Rinberg (BS ’11, Physics, Mathematics), Stanford University
Seth Werfel  (BA ’10, Economics), Stanford University

 



Gabriella Sciolla appointed to prestigious national science advisory panel (HEPAP)

24 04 2014

gabriellaProfessor Gabriella Sciolla was recently appointed to a three-year term on the High Energy Physics Advisory Panel (HEPAP). The panel, which was established in 1967, provides advice and recommendations to both the Department of Energy and the National Science Foundation on scientific, technical, and programmatic issues related to the US High Energy Physics program. HEPAP’s activities include reviews of the existing US particle physics program; advice on long-range plans, priorities, and strategies; advice on appropriate levels of funding to help the US maintain a leadership position in high-energy physics and an appropriate balance between competing elements of the program.



Professors Seth Fraden and Irv Epstein interviewed on NPR

27 03 2014

Professor Seth Fraden (Physics) and Professor Irv Epstein (Chemistry) were interviewed on Radio Boston, WBUR  about their research confirming Alan Turing’s Morphogenesis Theory.

Here’s the story:

http://radioboston.wbur.org/2014/03/27/brandeis-turing-morphogenesis

Here’s how to listen:

http://radioboston.wbur.org/listen



Eisenbud Lectures in Mathematics and Physics, March 11 – 12, 2014

24 02 2014
cumrunvafa

Cumrun Vafa

The Departments of Physics and Mathematics and Brandeis are incredibly excited to announce that this year’s Eisenbud Lectures in Mathematics and Physics will be given by the world-renowned theoretical physicist Prof. Cumrun Vafa, the Donner Professor of Science Harvard University.  Prof. Vafa is one of the leading figures in the fields of string theory and quantum gravity, and he has been on the forefront of the exchange between string theory and geometry that has revolutionized both fields over the last thirty years. He is known for his immense intuition, creativity, and depth of thinking in physics and mathematics.

The Eisenbud Lectures are the result of a bequest by Leonard and Ruth-Jean Eisenbud, and this year marks the 100th anniversary of Leonard Eisenbud’s birth.  Leonard Eisenbud was a mathematical physicist at SUNY-Stony Brook; upon his retirement he moved to the Boston area, as his son David was a member of the Mathematics faculty at Brandeis, and was given a desk here.  The bequest is for an annual lecture series by physicists and mathematicians working on the boundary between the first two fields.

The Eisenbud lectures consist of three lectures.  The first is a colloquium-style lecture meant for a broad scientific audience.  The following two lectures are more technical lectures meant for experts in the field.  The schedule is:

Lecture 1: “String Theory and the Magic of Extra Dimensions”, Tuesday, March 11 at 4PM in Abelson 131.  Tea, coffee, and refreshments will be served at 3:30 outside of the lecture hall. A reception will follow the talk.

Lecture 2: “Recent Progress in Topological Strings I”, Wednesday, March 12 at 11 AM in Abelson 333.

Lecture 3: “Recent Progress in Topological Strings II”, Wednesday March 12 at 4 PM in Abelson 229.

We hope to see you all at what promises to be a very exciting series of talks!

– Albion Lawrence, Dept. of Physics. and Bong Lian, Dept. of Mathematics



4th Annual Sprout Grants – Call for applications

12 02 2014

Bring your research and entrepreneurial ambitions to life!

The Brandeis University Virtual Incubator invites member of the Brandeis Community (undergrads, grad students, postdoctoral fellows, faculty, staff) to submit an application for a “Sprout Grant”. These grants are intended to stimulate entrepreneurship on campus and help researchers launch their ideas and inventions from Brandeis to the marketplace.

This spring we will be awarding $50,000 to be shared amongst the most promising proposals.

Come get your questions about the Sprout grant answered at one of our upcoming information sessions.

Info sessions:

Tuesday      February 18th    1pm – 2pm

Tuesday      February 25th    10am – 11am

Thursday     February 27th    11am – noon

Tuesday      March 4th          11am – noon

All information sessions will be held in the Shapiro science center 1st floor library, room 1-03 (the glass walled room near the elevators).

Deadlines: Preliminary applications are due on Friday, March 7th

Benefits of participation:

  • Teams that are selected to submit full applications will be given assistance in further developing their ideas into an effective business pitch.
  • Sprout grant winners will be connected with an experienced mentor, and given further assistance in getting their ideas to market by the Office of Technology Licensing.
  • Previous winners have come from many departments: Neuroscience, Biology, Biochemistry, Physics and Computer Science. Some of the funded technologies have resulted in patent applications and are moving towards commercial development. Read more about previous winners from your department here: Sprout winners 2011, Sprout winners 2012, Sprout winners 2013.

For more information go to our website (http://www.brandeis.edu/otl/grants/index.html) or contact Melissa Blackman at melblack@brandeis.edu.



New team-taught course offered spring 2014: “Differential geometry in classical and quantum mechanics”

23 12 2013

1) Introduction and Motivation

We would like to call attention to a new class offered this winter/spring 2014 quarter, being taught jointly by Prof. Daniel Ruberman in Mathematics and Prof. Albion Lawrence in Physics.  This is being listed jointly as Physics 202a (Quantum Field Theory) and Math 221b (Topics in Topology).  It is being team-taught under the auspices of the Brandeis Geometry and Dynamics IGERT program.

This course aims to introduce basic notions of fiber bundles and connections on them, and their application to basic physical examples in classical and quantum mechanics: especially the mechanics of deformable bodies, and Berry’s phase.  The target audience is mathematics and physics students, and mathematically inclined students in physical chemistry, neuroscience, computer science, and economics.  The essential principles here find applications to chemical and neural oscillators and control theory; there have even been suggestions that it is a useful language for describing currency trading.

The mathematics covered here typically appears in advanced courses on quantum and statistical field theory.  However, it has much broader applicability, and the instructors felt that studying more elementary physics examples better highlighted the essential mathematics and lead to a broader perspective that would better prepare students to find new and creative uses for the mathematics.  Furthermore, they allow us to teach a broader audience, as the essential physics background is straightforward and can be explained without the student needing two years of graduate-level physics courses.

This course is essentially a graduate course, but it is certainly appropriate for senior undergraduates with a solid mathematical background (math and physics majors especially).  The modern mathematical language of manifolds and vector bundles will be introduced and used throughout, but with reference to physical and geometric notions.  This will provide physics students with an appropriate vocabulary for further study, while mathematics students can try to grasp the intuition behind the formalism.  Note that the course satisfies one of the IGERT course requirements; however, we strongly encourage non-IGERT students to enroll.

The course is scheduled to take place Mondays and Wednesdays from 2-3:20pm.

2) Course Outline

The course outline below is preliminary and aspirational.

1.  Introduction:  Physics and mathematics of manifolds and connections.

  • Falling cats.
  • Manifolds: surfaces in 3-space; configuration spaces of physical objects.
  • Differentiation of functions and vector fields.
  • Brief introduction to differential forms.

2.  Line bundles and U(1) bundles, and connections on them.

  • Curvature of a U(1) connection.
  • Chern class of a U(1) connection.

3.  Applications of U(1) bundles.

  •  Electricity and magnetism as a U(1) connection.  Example: Dirac monopole.
  •  Deformable bodies in two dimensions: requires some simple words on conservation of angular momentum.
  • (Abelian) Berry’s phase.  A basic introduction to quantum mechanics: Hilbert space structure, role of Hamiltonian, adiabatic approximation.

4. Vector bundles, tangent, and cotangent bundles.

  • Covariant derivatives.

5. Applications.

  • Nonabelian Berry’s phase.

6.  Principal bundles

  • Frame bundles; SU(2) bundles.
  • Configuration space as principle bundle.

7. Applications

  •  Falling cats.
  •  Gauge theory and 4-manifolds (brief introduction).

3) Prerequisites

A minimum mathematical preparation will include multivariable calculus and linear algebra [Math 15/20 or 22ab], as well as basic notions of analysis such as continuity and differentiability [Math 40a/110a or 34a/104a].  Geometric analysis [Math 110a/140a] would be helpful but is not required.  For physics students, a good undergraduate course in quantum mechanics and in advanced classical mechanics (Lagrangian and Hamiltonian mechanics) will be helpful.

4)  Reading List

The required (and most recommended) reading will consist of online materials placed on the course LATTE page.

4.1 Required reading

Required reading will include:

  •  Lecture Notes on Bundles and Connections, by Chris Wendl.  Online lecture notes from an MIT course on differential geometry.
  •  Some parts of the article Gauge fields in the separation of rotation and internal motions in the n-body problem, by Robert G. Littlejohn and Matthias Reinsch.  Reviews of Modern Physics 69, pages 213-274.  This describes the basic kinematics of deformable bodies in some generality, with a very nice two-dimensional example worked out.
  •  Further reading on Berry’s phase, including Michael Berry’s original paper “Quantal phase factors accompanying adiabatic chaanges”, Proceedings of the Royal Society A392 45-57.

4.2 Recommended background reading and reviews

We will update this list as the semester approaches.  We welcome your input if you find additional nice readings on the subjects covered here.

  • Gravitation, Gauge Theories, and Differential Geometry, by Tohru Eguchi, Peter B. Gilkey, and Andrew J. Hanson, Physics Reports 66, pages 213-393.  A very readable introduction to differential geometry, written for physicists, with many instructive examples.
  •  Geometric Phases in Physics, by Alfred Shapere and Frank Wilczek. World Scientific (1989).

4.3 Original research papers of interest

Also to be updated before and during the semester.  Again, we welcome your input here.

  •  A dynamical explanation of the falling cat phenomenon, T.R. Kane and M.P. Scher, Int. J. Solids Structures 5 pp 663-670.
  •  Geometric phase shifts in chemical oscillators, M.L. Kaplan, T.B. Kepler, and I.R. Epstein, Nature 349 p. 506-8.


Research on active colloids by Brandeis team is highlighted in APS Physics blog

13 12 2013
figshagan

G. S. Redner, A. Baskaran, and M. F. Hagan. Phys. Rev. E 88, 012305 (2013).

by Gabe Redner

A recent article in Physics, the APS online magazine, highlights recent work done in the Hagan lab. Active particles such as swimming bacteria are of interest to physicists due to their nonequilibrium nature; since each particle is constantly burning energy as it swims, the system is driven to produce behaviors such as flocking and swarming that are not seen in traditional fluids.  To understand these systems, theorists have developed highly simplified models to isolate the most fundamental active behaviors and study them in detail.  This article rounds up several recent advances in the field from the Hagan lab and others.






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