- Name:
-
Robert G. Brown
- Address Information:
-
Robert G. Brown
Duke University Physics Department
Box 90305
Durham, NC 27708-0305
USA
Email: rgb@phy.duke.edu
URL: http://www.phy.duke.edu/
rgb/
Phones:
work: 919-660-2567
24 hr. Fax: 919-660-2525
home: 919-493-0933
- Personal:
-
Born March 29, 1955 in Raleigh,
North Carolina. Married in 1979 to Susan Foster Isbey, MD. Three
sons, Patrick O'Dowd Brown, b. 1987; William Brinkman Brown, b. 1990;
and Samuel Gibbins Brown, b. 1995. Lives in Durham, N.C.
- Education:
-
- B.S. from Duke University, 1977; Magna Cum Laude, four
years on the Dean's list with class honors. Majors were Physics and
Philosophy, with a minor interest (eight course credits, four at the
graduate level) in Mathematics.
- PhD. from Duke University, 1982 in Theoretical and
Mathematical Physics (see dissertation title below).
- Membership:
-
American Physical Society, Usenix.
- Employment:
-
- Undergraduate Research Assistant for Triangle
Universities Nuclear Laboratory (TUNL), 1977.
- Teaching Assistant, Duke University, 1977-1979.
- Instructor/Research Associate, Duke University, 1982-1988.
- Visiting Assistant Professor, Duke University, 1989-2001
- Visiting Professor, Duke University, 2001-2002
- Senior Systems Programmer, Duke University, 1987-present.
- Teaching Experience:
-
1982-present: undergraduate introductory physics,
undergraduate quantum theory, graduate classical electrodynamics, and
graduate mathematical methods of physics. In addition Brown has taught
two independent study courses in computer science and programming and
sponsored a PRUV fellowship student studying genetic algorithms. Brown
has also been a pre-major advisor for the Trinity School of Arts and
Sciences since 1995.
- Publications and Conferences:
-
- ``Multiple scattering and non-muffin-tin band theory'',
presented at the Southeastern Sectional meeting of the American
Physical Society, November, 1980.
- ``The position space Green's function and its application to a
non-muffin-tin band theory''. Ph.D. dissertation; June 1982.
- ``Generalized non-muffin-tin band theory,'' R. G. Brown and M.
Ciftan, Phys. Rev. B27, 4564 (1983).
- ``Stress activated Raman scattering and microcrack detection'', M.
Ciftan, R. G. Brown, and E. Saibel, Int J. Eng. Sci 21, 128
(1983).
- ``A numerical application of a generalized non-muffin-tin band
theory'', Poster presented at Sanibel Quantum Chemistry Symposium, March,
1984.
- ``A generalized non-muffin-tin theory of band
structure'', R. G. Brown and M. Ciftan, Int. J. Quan. Chem.:
QCS 18 ed. P. O. Lowdin, J. R. Sabin, M. C. Zerner. Wiley and
Sons, New York, 1984.
- ``A generalized theory of band structure'', R. G. Brown and M.
Ciftan, Phys. Rev. B32, 1339 (1985).
- ``Numerical tests of high-precision multiple-scattering band
theory'', R. G. Brown and M. Ciftan, Phys. Rev. B33, 7937
(1986).
- ``Convergence properties of an exact band theory'', R. G.
Brown and M. Ciftan, Condensed Matter Theories 1, ed. F.
B. Malik, Plenum, New York, 1986.
- ``Pseudospin-ordered optical bistability for two-level atoms'',
presented at the meeting of the Southeastern Section of the American
Physical Society in Williamsburg, VA, November 1986.
- ``Local dynamics, correlation, and phase transitions: N-body
versus nonlinear quantum optics'', R. G. Brown and M. Ciftan Condensed
Matter Theories 3, ed. J. S. Arponen, R. F. Bishop and M. Manninen,
Plenum, New York, 1988.
- ``Generalized non-muffin-tin multiple scattering theory'', R. G.
Brown, J. Phys. B21 (letter), L309 (1988).
- ``Multipolar integral equation theory and generalized multiple
scattering theory'', , R. G. Brown and M. Ciftan Condensed Matter
Theories 4, ed. J. H. Keller, Plenum, New York, 1989.
- ``Multipolar expansions in the empty lattice problem'', R. G.
Brown and M. Ciftan, Phys. Rev. B39, 3543 (1989).
- Comment on ``Energy band equations for a general periodic
potential'', R. G. Brown and M. Ciftan, Phys. Rev. B39, 10415
(1989).
- ``The N-atom optical Bloch equations: A microscopic theory of
quantum optics'', R. G. Brown and M. Ciftan, Phys. Rev. A40, 3080
(1989).
- ``An elementary integral of Bessel functions'', A. Kenan Ciftci, R.
G. Brown and M. Ciftan, Phys. Rev. B41, 3242 (1990).
- ``Quantum Statistical Microdynamics and critical
phenomena'', R. G. Brown and M. Ciftan, Condensed Matter
Theories 6, ed. S. Fontoni and S. Rosati, Plenum, New York,
1991.
- ``Ferromagnetism in two dimensions'', presented at the
1991 Southeastern Sectional meeting of the American Physical Society
in Durham, NC.
- ``Multipolar Expansions for Multiple Scattering Theory'',
presented at the 1991 Materials Research Society Fall Symposium
(session V) in Boston, MA; published in the symposium
proceedings.
- ``The 2d/3D classical Heisenberg ferromagnet'', presented at
the March, 1992 Simulation Methods Workshop at the Center for
Simulational Studies in Athens, GA; published in the workshop
proceedings. (Springer-Verlag).
- ``The Dynamic Critical Exponents of the 3d,
Classical Heisenberg Model'', R. G. Brown and M. Ciftan, Condensed Matter Theories 10, ed. Artur Polls, Nova Science
Publishers, (1996).
- ``A high-precision evaluation of the static exponents of the
classical Heisenberg ferromagnet'', R. G. Brown and M. Ciftan, Phys. Rev. Lett. 76 1352 (1996).
- ``The critical exponents of the classical Heisenberg
ferromagnet'', talk presented by R. G. Brown at the 1996 APS meeting,
St. Louis, Missouri.
- ``Critical exponents of the classical Heisenberg model:
Comment and Reply'', R. G. Brown and M. Ciftan, Phys. Rev. Lett.
78 2265 (1997)
- ``Critical scaling of the dynamic critical exponents of the
classical Heisenberg ferromagnet'', R. G. Brown and M. Ciftan, Phys. Rev. B 54 15860 (1996).
- ``Critical Exponents of the Classical Heisenberg Model'', R.
G. Brown and M. Ciftan, p. 345 of Condensed Matter Theories 12, ed. John. W. Clark and P. V. Panat, Nova Science Publishers, New
York, 1997.
- ``Monte Carlo study of the helicity modulus of the classical
Heisenberg ferromagnet'', R. G. Brown and M. Ciftan, to appear in Condensed Matter Theories 13 (1998, part I) and Condensed
Matter Theories 14 (1999, part II) in press.
- Web Publications:
-
Many of the following publications (and related modifications) are
available at:
http://www.phy.duke.edu/brahma/Resources/resources.php
or
http://www.phy.duke.edu/
rgb/Beowulf/beowulf.php
- ``The Beowulf Design'', tutorial presented at 1999 Linux Expo
in Raleigh, NC.
- ``Introduction to the Beowulf Design'', tutorial presented at
at Glaxo-Wellcome in the Research Triangle Park, March 27, 2000.
- ``Introduction to the Beowulf Design'', a much more elementary
tutorial presented to the 2000 Techno-Security Workshop held in North
Myrtle Beach, SC from April 17-19, 2000.
- ``Engineering a Beowulf-Style Compute Cluster'', R. G. Brown,
online Gnu Open Publication License book provided to the beowulf
community at:
http://www.phy.duke.edu/brahma/Resources/beowulf_book.php
- ``Maximizing Beowulf Performance'', R. G. Brown, invited paper
presented at the Extreme Linux track of the Atlanta Linux Showcase and
Conference, October 2000, available online at:
http://www.usenix.org/publications/library/proceedings-
/als2000/full_papers/brownrobert/
- "Eden, A Home Beowulf", R. G. Brown, in ;login:, The
Magazine of Usenix and Sage, Aug. 2001, Vol. 26, No. 5., available
online at:
http://www.usenix.org/publications/login-
/2001-08/pdfs/brown.pdf
- "The Critical Scaling of the Helicity Modulus of the O(3)
Classical Heisenberg Ferromagnet", a research progress report presented
to the Duke High Performance Computing Group on April 7, 2003.
- Manuscripts being prepared:
-
- ``Finite size scaling of the helicity modulus of the
classical Heisenberg ferromagnet'', R. G. Brown and M. Ciftan
(submitted to Physical Review Letters, being revised with more
computation).
- Current Support:
R. G. Brown is currently co-PI on U. S. Army Research Office grant No.
313-1191, 1/22/01-4/21/03.
- Other Accomplishments:
-
- Systems engineer who designed (circa 1995) and has subsequently
been building, upgrading, and redesigning the beowulf-class distributed
parallel supercomputer cluster Brahma in the Duke University
physics department. Parts of this system have been funded by the
University, by the Army Research Office, by the Department of Energy, by
the National Science Foundation, and by an Intel equipment grant, and R.
G. Brown gratefully acknowledges this support. Details of the system
can be obtained from:
http://www.phy.duke.edu/brahma/
- Created the Duke Beowulf User's Group (DBUG) website:
http://www.phy.duke.edu/dbug/
- Linux-smp and beowulf contributor. As a natural extension of
the work on distributed parallel systems, R. G. Brown has actively
participated in the development and debugging of the network and adaptec
(scsi disk) drivers in the linux kernel distributions. In addition,
brahma provides a home for mirrors of the linux-smp FAQ and the beowulf
website. In various linux mailing list groups, he has helped countless
persons get over various humps in developing their own resources and
hence has contributed to international productivity in science and
industry. R. G. Brown, together with Dave Rahul of the University of
Pennsylvania, organized the Extreme Linux section of the 1999 Linux
Expo, which focused considerable attention on the beowulf effort and the
possibilities of COTS parallel supercomputing. Most recently, R. G.
Brown was selected to be on the organizing committee of the ``IEEE
International Symposium on Cluster Computing and the Grid''
(CCGrid'2000), held in Brisbane, Australia in May, 2001.
- Board member and cofounder of Market
Driven. Primary author of Discover, a
neural engine that can be used to do predictive modeling. This engine
incorporates a number of proprietary improvements to standard neural
algorithms to achieve high predictivity with minimal training times. Is
working on a set of genetic algorithms which similarly promise
breakthroughs in genetic efficiency.
- Chairperson and primary volunteer of the technology commitee of
Immaculata Catholic
School
in Durham, NC. Headed (and
continues to work with as of 5/03) a project that basically wired the
school and installed a proper client server network.
- Board member of Copperfield's
Books, a small independent California
bookstore. Currently (05/03) guiding Copperfields through a difficult
transition from ``homemade'' IT to a proper client/server network
spanning multiple stores.
- Author of ``Who Shall Sing, When Man is Gone'', and ``Hot Tea'',
Gnu Open Publication License volumes of poetry, freely available at:
http://www.phy.duke.edu/
rgb/Poetry/poetry.php