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Physics at the Cutting Edge
Fall 2000
Prof. Harold Baranger
Class Time: TH 9:10-10:25
Class Room: Room 234 Physics Building
(may change to 054)
The main goal of this course is to use the
basic physics and physics tools that students have learned in previous
courses to investigate exciting current research topics. The course is
mainly aimed at senior Physics majors, and assumes that the students
have some knowledge of both quantum mechanics and statistical mechanics
(see Prerequisites above). A crucial component of the course is a final
project and paper on a subject of the student's choice; this should involve
reading and synthesizing work from the original research literature. Note
in addition that this course satisfies the "writing in the disciplines"
requirement of C2000.
I plan to cover 5 topics this year. The
first half of the course will be topics from Nanoscience. Here is a
link to a brief general blurb on nanoscience as well as a few words about
nanoscience
at Duke. The three specific topics for
the first half are:
the Coulomb blockade, quantum dots, and single-electron
transistors--
Scanning Tunneling Microscopy (STM)-what it
is, how it works, and what it has revealed about surfaces, atoms, and materials.
STM is wonderful technique, about 15 years old, which probes solids on
the atomic scale. Here is an example, an image of the electron density
on a copper surface (orange ripples) which has iron atoms placed on it
and assembled into a ring (blue humps). (Image from the IBM
STM page).
Quantum Cryptography, Computing, and Teleportation-the basic idea of "qubits"
and computing with them, what computations they may be useful for, and
the possibility that it will ever be practical (unfortunately, quite remote).
The topics for the second half of
the course will depend on the interests of the students. They
may consists of additional topics in nanoscience, or of topics from other
areas of physics. Possibilities for the latter include, for example,
the inflationary universe-the current leading
idea in cosmology, supported by recent experiments on the inhomogeneity
of the microwave background radiation,
extrasolar planets-in the last three years,
the number of known planets orbiting stars outside our solar system has
gone from 0 to several dozen. How are these planets located? What are they
like?
Bose-Einstein condensates of atoms-currently
one of the hottest topic in atomic physics. How are these macroscopic quantum
objects formed?
Last
modified: 28-Aug-00
baranger@phy.duke.edu |
|