# Robert G. Brown

## Lecturer

## Details

** Critical behavior of the helicity modulus for the classical Heisenberg model
**

Physical Review B - Condensed Matter and Materials Physics
(2006)

** The critical behavior for the helicity modulus for the classical Heisenberg model
**

Physical Review B
(2006)

** Monthly column in Cluster World Magazine
**

(2005)

** A Modest Proposal
**

(2005)

** A New Year, a New Column
**

(2005)

** Finite size scaling of the helicity modulus of the classical Heisenberg ferromagnet
**

Physical Review Letters
(2005)

** Finite size scaling of the helicity modulus of the classical Heisenberg ferromagnet
**

Physical Review Letters
(2005)

** Packets 'n' Protocols II
**

(2004)

** Packets 'n' Protocols
**

(2004)

** Head Node: A True Clustory
**

(2004)

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Prof. Robert G. Brown is interested in using algebraic and statistical methods to study a wide range of equilibrium and nonequilibrium problems. With collaborator Dr. Mikael Ciftan, Dr. Brown has developed new Monte Carlo Langevin equation-based techniques that allow dynamic/nonequilibrium and static/equilibrium phenomena to be studied on the same footing. His recent work includes algebraic and computational studies in dynamic and static critical phenomena in quantum optics and magnetism. In earlier work, Dr. Brown also developed a generalized (non-muffin-tin) stationary multiple scattering theory including applications to band theory and quantum chemistry. This work formally eliminates the muffin-tin approximation from KKR-type band theory and its equivalents in quantum chemistry, without the need for so-called "near field" corrections.

**Education:**

** Monte Carlo study of the helicity modulus of the classical Heisenberg ferromagnet
**

In Condensed Matter Theories 13,14 edited by . 1998-1999; : Plenum, New York.

** Critical Exponents of the Classical Heisenberg Model
**

In Condensed Matter Theories 12 edited by John. W. Clark and P. V. Panat. 1997; pp. p. 345. : Nova Science Publishers, New York.

** The Dynamic Critical Exponents of the 3d, O (3) Classical Heisenberg Model
**

In Condensed Matter Theory 10 edited by Artur Polls. 1996; : Nova Science Publishers.

** Quantum Statistical Microdynamics and critical phenomena
**

In Condensed Matter Theories 6 edited by S. Fontoni and S. Rosati. 1991; : Plenum, New York.

** Multipolar integral equation theory and generalized multiple scattering theory
**

In Condensed Matter Theories 4 edited by J. H. Keller. 1989; : Plenum, New York.

** Local dynamics, correlation, and phase transitions: N-body versus nonlinear quantum optics
**

In Condensed Matter Theories 3 edited by J. S. Arponen, R. F. Bishop and M. Manninen. 1988; : Plenum, New York.

** Convergence properties of an exact band theory
**

In Condensed Matter Theories 1 edited by F. B. Malik. 1986; : Plenum, New York.