%% @book{fds374994, Author = {R. Brown}, Title = {Introductory Physics 1 and 2}, Year = {2023}, url = {http://www.phy.duke.edu/~rgb/Class/intro-physics-1.php}, Abstract = {Textbooks for introductory physics for majors and non-majors, with calculus.}, Key = {fds374994} } @article{fds245649, Author = {Brown, RG and Ciftan, M}, Title = {Critical behavior of the helicity modulus for the classical Heisenberg model}, Journal = {Physical Review B - Condensed Matter and Materials Physics}, Volume = {74}, Number = {22}, Publisher = {American Physical Society (APS)}, Year = {2006}, Month = {Winter}, ISSN = {1098-0121}, url = {http://dx.doi.org/10.1103/PhysRevB.74.224413}, Keywords = {critical exponent • helicity modulus • classical Heisenberg ferromagnet}, Abstract = {The critical scaling of the helicity modulus of the classical O(3) 3d Heisenberg ferromagnet is studied directly. Monte Carlo methods that impose either an antiperiodic boundary condition or a finite twist of definite handedness across otherwise periodic boundaries in one lattice direction are used to measure scale-dependent enthalpy variations in a simple cubic lattice at the ferromagnetic critical temperature. Finite-size scaling is then used to determine the critical exponents vE and vF for helicity and, by evaluating three independent hyperscaling-linked pairs of ν and α, to test hyperscaling for this model. It is observed that antiperiodic boundary conditions in particular constrain the lattice to have a nonzero topological charge, establishing a connection between topological charge and helicity in the model. © 2006 The American Physical Society.}, Doi = {10.1103/PhysRevB.74.224413}, Key = {fds245649} } @misc{fds36675, Author = {R.G. Brown}, Title = {Monthly column in Cluster World Magazine}, Year = {2005}, Month = {June}, Key = {fds36675} } @misc{fds36686, Author = {R.G. Brown}, Title = {A Modest Proposal}, Series = {Monthly column in Cluster World Magazine}, Year = {2005}, Month = {May}, Key = {fds36686} } @misc{fds36685, Author = {R.G. Brown}, Title = {A New Year, a New Column}, Series = {Monthly column in Cluster World Magazine}, Year = {2005}, Month = {January}, Key = {fds36685} } @article{fds245650, Author = {Brown, RG}, Title = {Finite size scaling of the helicity modulus of the classical Heisenberg ferromagnet}, Journal = {Physical Review Letters}, Year = {2005}, Key = {fds245650} } @misc{fds36684, Author = {R.G. Brown}, Title = {Packets 'n' Protocols II}, Series = {Monthly column in Cluster World Magazine}, Year = {2004}, Month = {October}, Key = {fds36684} } @misc{fds36682, Author = {R.G. Brown}, Title = {Packets 'n' Protocols}, Series = {Monthly column in Cluster World Magazine}, Year = {2004}, Month = {September}, Key = {fds36682} } @misc{fds36683, Author = {R.G. Brown}, Title = {Head Node: A True Clustory}, Series = {Monthly column in Cluster World Magazine}, Year = {2004}, Month = {September}, Key = {fds36683} } @misc{fds36681, Author = {R.G. Brown}, Title = {Cluster Infrastructure}, Series = {Monthly column in Cluster World Magazine}, Year = {2004}, Month = {June}, Key = {fds36681} } @misc{fds36680, Author = {R.G. Brown}, Title = {PVM, Part II}, Series = {Monthly column in Cluster World Magazine}, Year = {2004}, Month = {April}, Key = {fds36680} } @misc{fds36679, Author = {R.G. Brown}, Title = {Serious Parallel Computing: PVM}, Series = {Monthly column in Cluster World Magazine}, Year = {2004}, Month = {March}, Key = {fds36679} } @misc{fds36678, Author = {R.G. Brown}, Title = {Amdahl's Law}, Series = {Monthly column in Cluster World Magazine}, Year = {2004}, Month = {February}, Key = {fds36678} } @misc{fds36677, Author = {R.G. Brown}, Title = {Doing Work in Parallel}, Series = {Monthly column in Cluster World Magazine}, Year = {2004}, Month = {January}, Key = {fds36677} } @misc{fds36714, Author = {R.G. Brown}, Title = {Wulfware}, Year = {2004}, url = {http://www.phy.duke.edu/}, Key = {fds36714} } @misc{fds36715, Author = {R.G. Brown}, Title = {Benchmaster}, Year = {2004}, url = {http://www.phy.duke.edu/rgb/General/benchmaster.php}, Key = {fds36715} } @misc{fds36716, Author = {R.G. Brown}, Title = {Dieharder}, Year = {2004}, Key = {fds36716} } @misc{fds36717, Author = {R.G. Brown}, Title = {Flashcard}, Year = {2004}, url = {http://www.phy.duke.edu/rgb/General/flashcard.php}, Key = {fds36717} } @misc{fds36676, Author = {R.G. Brown}, Title = {Building Your First Cluster}, Series = {Monthly column in Cluster World Magazine}, Year = {2003}, Month = {December}, Key = {fds36676} } @misc{fds36667, Author = {R.G. Brown}, Title = {Beowulf Infrastructure}, Series = {Linux Magazine}, Year = {2003}, Month = {June}, url = {http://www.linux-mag.com/archive/2003-06/infrastructure}, Key = {fds36667} } @misc{fds36713, Author = {R.G. Brown}, Title = {The Critical Scaling of the Helicity Modulus of the O(3) Classical Heisenberg Ferromagnet}, Year = {2003}, Month = {April}, Key = {fds36713} } @misc{fds36712, Author = {R.G. Brown}, Title = {Eden, A Home Beowulf}, Volume = {26}, Series = {"Login" The Magazine of Usenix and Sage}, Number = {5}, Year = {2001}, Month = {August}, url = {http://www.usenix.org/publications/login/2001-08/pdfs/brown.pdf}, Key = {fds36712} } @misc{fds36711, Author = {R.G. Brown}, Title = {Maximizing Beowulf Performance}, Year = {2000}, Month = {October}, url = {http://www.usenix.org/publications/library/proceedings/als2000/full}, Key = {fds36711} } @misc{fds36709, Author = {R.G. Brown}, Title = {Introduction to the Beowulf Design}, Year = {2000}, Month = {April}, Key = {fds36709} } @misc{fds36707, Author = {R.G. Brown}, Title = {Introduction to the Beowulf Design}, Year = {2000}, Month = {March}, url = {http://www.phy.duke.edu/brahma/Resources/resources.php}, Key = {fds36707} } @article{fds352785, Author = {Brown, RG}, Title = {Maximizing beowulf performance}, Journal = {Proceedings of 4th Annual Linux Showcase and Conference 2000, ALS 2000}, Year = {2000}, Month = {January}, Abstract = {At this point in time the beowulf (and other related ompute cluster) architectures has come of age in Linux. Few indeed are those in any realm of technical computing that are unaware of the fact that one an assemble a collection of commodity off the shelf (COTS) computers and networking hardware into a high performance supercomputing environment. However, a detailed knowledge or appreciation for the bottlenecks and special problems associated with beowulf design is not so common. A review of the important bottlenecks and design features of a beowulf is given along with associated benchmarking and measurement tools to illustrate how to bridge the gap between the simple "recipe" of a beowulf as a pile of compute nodes, interconnected with a fast network and running linux and the realities of engineering a parallel code and beowulf-style luster to achieve satisfactory performane.}, Key = {fds352785} } @misc{fds36710, Author = {R.G. Brown}, Title = {Engineering a Beowulf-Style Compute Cluster}, Year = {2000}, url = {http://www.phy.duke.edu/brahma/Resources/beowulfbook.php}, Key = {fds36710} } @misc{fds36708, Author = {R.G. Brown}, Title = {The Beowulf Design}, Year = {1999}, url = {http://www.phy.duke.edu/brahma/Resources/resources.php}, Key = {fds36708} } @book{fds36674, Author = {R.G. Brown and M. Ciftan}, Title = {Monte Carlo study of the helicity modulus of the classical Heisenberg ferromagnet}, Booktitle = {Condensed Matter Theories 13,14}, Publisher = {Plenum, New York}, Year = {1998}, Key = {fds36674} } @booklet{Brown97, Author = {Brown, RG and Ciftan, M}, Title = {Brown and ciftan reply}, Journal = {Physical Review Letters}, Volume = {78}, Number = {11}, Pages = {2266}, Publisher = {American Physical Society (APS)}, Year = {1997}, Month = {January}, ISSN = {0031-9007}, url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1997WN07900061&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92}, Abstract = {A Reply to the Comment by Christian Holm and Wolfhard Janke. © 1997 The American Physical Society.}, Doi = {10.1103/PhysRevLett.78.2266}, Key = {Brown97} } @book{fds36673, Author = {R.G. Brown and M. Ciftan}, Title = {Critical Exponents of the Classical Heisenberg Model}, Pages = {p. 345}, Booktitle = {Condensed Matter Theories 12}, Publisher = {Nova Science Publishers, New York}, Editor = {John. W. Clark and P. V. Panat}, Year = {1997}, Key = {fds36673} } @booklet{Brown96, Author = {Brown, RG and Ciftan, M}, Title = {Dynamic critical exponents and sample independence times for the classical Heisenberg model.}, Journal = {Physical review. B, Condensed matter}, Volume = {54}, Number = {22}, Pages = {15860-15874}, Year = {1996}, Month = {December}, ISSN = {0163-1829}, url = {http://www.ncbi.nlm.nih.gov/pubmed/9985655}, Doi = {10.1103/physrevb.54.15860}, Key = {Brown96} } @booklet{Brown96a, Author = {Brown, RG and Ciftan, M}, Title = {High-precision evaluation of the static exponents of the classical Heisenberg ferromagnet.}, Journal = {Physical review letters}, Volume = {76}, Number = {8}, Pages = {1352-1355}, Year = {1996}, Month = {February}, url = {http://www.ncbi.nlm.nih.gov/pubmed/10061699}, Doi = {10.1103/physrevlett.76.1352}, Key = {Brown96a} } @book{fds36671, Author = {R.G. Brown and M. Ciftan}, Title = {The Dynamic Critical Exponents of the 3d, O (3) Classical Heisenberg Model}, Booktitle = {Condensed Matter Theory 10}, Publisher = {Nova Science Publishers}, Editor = {Artur Polls}, Year = {1996}, Key = {fds36671} } @misc{fds36672, Author = {R.G. Brown}, Title = {Critical scaling of the dynamic critical exponents of the classical Heisenberg ferromagnet}, Year = {1996}, Key = {fds36672} } @article{fds245651, Author = {Brown, RG and Ciftan, M}, Title = {Critical scaling of the dynamic critical exponents of the classical Heisenberg ferromagnet}, Journal = {Phys. Rev.}, Volume = {B54}, Pages = {15860}, Year = {1996}, Key = {fds245651} } @booklet{Brown95, Author = {Brown, RG}, Title = {Softwares hard questions}, Journal = {Scientific American}, Volume = {272}, Number = {1}, Pages = {8-8}, Year = {1995}, Month = {January}, Key = {Brown95} } @article{fds318410, Author = {Brown, RG and Ciftan, M}, Title = {Statistical microdynamics of extended systems in natural function spaces}, Journal = {International Journal of Quantum Chemistry}, Volume = {48}, Number = {27 S}, Pages = {363-375}, Year = {1993}, Month = {January}, url = {http://dx.doi.org/10.1002/qua.560480837}, Abstract = {An approximate numerical method of solving the Generalized Master Equation for a many‐body problem is presented, with examples of its application. This method involves the construction from the full Hamiltonian (of the system plus the “bath”) of a set of unitary Langevin equations that combine deterministic microcanonical, stochastic canonical (heat bath), and stochastic nonthermal dynamics in a single time‐integration scheme. If implemented in a representation that captures the essential physics and repeatedly run from a given initial condition, this method evaluates stochastic representatives from the actual fiber bundle of system worldlines that flow from the initial condition and, hence, numerically evaluates the path integral. © 1993 John Wiley & Sons, Inc. Copyright © 1993 John Wiley & Sons, Inc.}, Doi = {10.1002/qua.560480837}, Key = {fds318410} } @article{fds36661, Author = {R.G. Brown}, Title = {The 2d/3D classical Heisenberg ferromagnet}, Year = {1992}, Key = {fds36661} } @misc{fds36670, Author = {R.G. Brown}, Title = {Ferromagnetism in two dimensions}, Year = {1991}, Key = {fds36670} } @book{fds36669, Author = {R.G. Brown and M. Ciftan}, Title = {Quantum Statistical Microdynamics and critical phenomena}, Booktitle = {Condensed Matter Theories 6}, Publisher = {Plenum, New York}, Editor = {S. Fontoni and S. Rosati}, Year = {1991}, Key = {fds36669} } @article{fds36660, Author = {R.G. Brown}, Title = {Multipolar Expansions for Multiple Scattering Theory}, Year = {1991}, Key = {fds36660} } @booklet{Ciftci90, Author = {Ciftci, AK and Brown, RG and Ciftan, M}, Title = {Elementary integral of Bessel functions.}, Journal = {Physical review. B, Condensed matter}, Volume = {41}, Number = {5}, Pages = {3242-3243}, Year = {1990}, Month = {February}, ISSN = {0163-1829}, url = {http://www.ncbi.nlm.nih.gov/pubmed/9994105}, Doi = {10.1103/physrevb.41.3242}, Key = {Ciftci90} } @booklet{Brown89, Author = {Brown, RG and Ciftan, M}, Title = {N-atom optical Bloch equations: A microscopic theory of quantum optics.}, Journal = {Physical review. A, General physics}, Volume = {40}, Number = {6}, Pages = {3080-3105}, Year = {1989}, Month = {September}, ISSN = {0556-2791}, url = {http://www.ncbi.nlm.nih.gov/pubmed/9902518}, Doi = {10.1103/physreva.40.3080}, Key = {Brown89} } @article{fds303636, Author = {Brown, RG and Ciftan, M}, Title = {Comment on "Energy-band equation for a general periodic potential"}, Journal = {Physical review. B, Condensed matter}, Volume = {39}, Number = {14}, Pages = {10415-10419}, Year = {1989}, Month = {May}, ISSN = {0163-1829}, url = {http://www.ncbi.nlm.nih.gov/pubmed/9947838}, Doi = {10.1103/physrevb.39.10415}, Key = {fds303636} } @booklet{Brown89b, Author = {Brown, RG and Ciftan, M}, Title = {Multipolar expansions for the empty-lattice problem.}, Journal = {Physical review. B, Condensed matter}, Volume = {39}, Number = {6}, Pages = {3543-3550}, Year = {1989}, Month = {February}, ISSN = {0163-1829}, url = {http://www.ncbi.nlm.nih.gov/pubmed/9948669}, Doi = {10.1103/physrevb.39.3543}, Key = {Brown89b} } @book{fds36657, Author = {R. G. Brown and M. Ciftan}, Title = {Multipolar integral equation theory and generalized multiple scattering theory}, Booktitle = {Condensed Matter Theories 4}, Publisher = {Plenum, New York}, Editor = {J. H. Keller}, Year = {1989}, Key = {fds36657} } @booklet{Brown88, Author = {Brown, RG}, Title = {Generalised non-muffin-tin multiple scattering theory}, Journal = {Journal of Physics B: Atomic, Molecular and Optical Physics}, Volume = {21}, Number = {11}, Pages = {L309-L316}, Publisher = {IOP Publishing}, Year = {1988}, Month = {December}, ISSN = {0953-4075}, url = {http://dx.doi.org/10.1088/0953-4075/21/11/008}, Abstract = {The author presents a derivation of generalised multiple scattering (MS) theory for finite systems such as molecules, atomic clusters and nuclei. It eliminates the need for the muffin-tin approximation (MTA) in the MS methods commonly used in quantum chemistry (e.g., in the X alpha -SCW method). It is completely separable and does not contain the near-field error common to previous attempts to construct a generalised theory. The generalised equations are identical to the well known MTA MS equations, but with the correct definition of the cellular T matrix.}, Doi = {10.1088/0953-4075/21/11/008}, Key = {Brown88} } @book{fds36656, Author = {R. G. Brown and M. Ciftan}, Title = {Local dynamics, correlation, and phase transitions: N-body versus nonlinear quantum optics}, Booktitle = {Condensed Matter Theories 3}, Publisher = {Plenum, New York}, Editor = {J. S. Arponen and R. F. Bishop and M. Manninen}, Year = {1988}, Key = {fds36656} } @misc{fds36655, Author = {R.G. Brown}, Title = {Pseudospin-ordered optical bistability for two-level atoms}, Year = {1986}, Month = {November}, Key = {fds36655} } @booklet{Brown86, Author = {Brown, RG and Ciftan, M}, Title = {Numerical tests of high-precision multiple-scattering band theory.}, Journal = {Physical review. B, Condensed matter}, Volume = {33}, Number = {12}, Pages = {7937-7940}, Year = {1986}, Month = {June}, ISSN = {0163-1829}, url = {http://www.ncbi.nlm.nih.gov/pubmed/9938183}, Doi = {10.1103/physrevb.33.7937}, Key = {Brown86} } @book{fds36668, Author = {R.G. Brown and M. Ciftan}, Title = {Convergence properties of an exact band theory}, Booktitle = {Condensed Matter Theories 1}, Publisher = {Plenum, New York}, Editor = {F. B. Malik}, Year = {1986}, Key = {fds36668} } @article{fds303635, Author = {Brown, RG and Ciftan, M}, Title = {Response to "non-muffin-tin band theories of the multiple-scattering type"}, Journal = {Physical review. B, Condensed matter}, Volume = {32}, Number = {2}, Pages = {1343-1346}, Year = {1985}, Month = {July}, ISSN = {0163-1829}, url = {http://www.ncbi.nlm.nih.gov/pubmed/9937157}, Doi = {10.1103/physrevb.32.1343}, Key = {fds303635} } @article{fds318411, Author = {Brown, RG and Ciftan, M}, Title = {Erratum: A generalized non‐muffin‐tin theory of band structure}, Journal = {International Journal of Quantum Chemistry}, Volume = {28}, Number = {19 S}, Pages = {751-752}, Publisher = {WILEY}, Year = {1985}, Month = {January}, url = {http://dx.doi.org/10.1002/qua.560280874}, Doi = {10.1002/qua.560280874}, Key = {fds318411} } @article{fds340357, Author = {Brown, RG and Ciftan, M}, Title = {A generalized non‐muffin‐tin theory of band structure}, Journal = {International Journal of Quantum Chemistry}, Volume = {27}, Number = {6}, Pages = {803-804}, Publisher = {WILEY}, Year = {1985}, Month = {January}, url = {http://dx.doi.org/10.1002/qua.560270614}, Doi = {10.1002/qua.560270614}, Key = {fds340357} } @misc{fds36653, Author = {R.G. Brown}, Title = {A numerical application of a generalized non-muffin-tin band theory}, Year = {1984}, Month = {March}, Key = {fds36653} } @booklet{Brown84, Author = {Brown, RG and Ciftan, M}, Title = {A generalized non‐muffin‐tin theory of band structure}, Journal = {International Journal of Quantum Chemistry}, Volume = {26}, Number = {18 S}, Pages = {87-104}, Publisher = {WILEY}, Year = {1984}, Month = {January}, ISSN = {0020-7608}, url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1984ACF7600012&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92}, Abstract = {A generalized non‐muffin‐tin band structure method is presented in the context of multiple scattering off of the Wigner–Seitz cell. This technique has the following desirable features: it is formally exact and rapidly convergent; it preserves the separation between the nondiagonal scattering matrix for the cell and the usual structure constants of KKR in the secular determinant; it produces an accurate representation of the wave function throughout the sphere bounding the Wigner–Seitz cell and hence is suitable for self‐consistent field calculations and applications that require a detailed knowledge of the unperturbed crystal potential and wave functions. Various aspects of the application of this theory to the empty lattice and sodium are presented, and its limitations discussed. Some future lines of research are briefly reviewed. Copyright © 1984 John Wiley & Sons, Inc.}, Doi = {10.1002/qua.560260813}, Key = {Brown84} } @article{fds245652, Author = {Brown, RG and Ciftan, M}, Title = {Generalized non-muffin-tin band theory}, Journal = {Physical Review B}, Volume = {27}, Number = {8}, Pages = {4564-4579}, Publisher = {American Physical Society (APS)}, Year = {1983}, Month = {January}, ISSN = {0163-1829}, url = {http://dx.doi.org/10.1103/PhysRevB.27.4564}, Abstract = {A new way of applying the non-spherically-symmetric phase-functional method of Williams and van Morgan to the band-structure problem is derived that results in a generalized (non-muffin-tin) Green's-function band theory that is variationally stationary and exact in the single-electron, local-potential approximation. The "near-field" correction, believed to destroy the separability of Green's-function band theories, is implicitly included in the nonspherically-symmetric phase-functional basis. This basis is discussed in some detail as we correct an error in the previous work of Williams and van Morgan. Using this basis to expand the crystal wave function, we obtain an equation that is the most general expression of Green's-function band theory. This equation contains a sum over the structure constants of the Korringa-Kohn-Rostoker method and two "phase functions" (corresponding to the cosine and sine of the nondiagonal partial-wave phase shifts) that are independently calculable; hence the effects of structure and cellular potential completely separate. The variational procedure of Kohn and Rostoker then yields a secular determinant that can be solved for the non-muffin-tin bands and wave functions; the resulting theory is suitable for self-consistent-field applications. © 1983 The American Physical Society.}, Doi = {10.1103/PhysRevB.27.4564}, Key = {fds245652} } @booklet{Ciftan83, Author = {Ciftan, M and Brown, RG and Saibel, E}, Title = {Stress activated Raman scattering and microcrack detection}, Journal = {International Journal of Engineering Science}, Volume = {21}, Number = {11}, Pages = {1285-1293}, Publisher = {Elsevier BV}, Year = {1983}, Month = {January}, ISSN = {0020-7225}, url = {http://dx.doi.org/10.1016/0020-7225(83)90125-8}, Abstract = {A new technique for the detection of microcrack precursors and for the study of the dynamics of crack propagation is proposed. The technique uses laser Raman scattering off of adsorbed surface species to detect microcrack precursors via variations in the Raman spectrum associated with the stresses localized within such precursors. We give extensive theoretical justification and detail several approaches designed to substantiate the plausability of the technique proposed. This technique can become a valuable tool for the detection of microcrack precursors as well as studies of phenomena including adsorption, catalysis. adhesion, wear and the dynamics of stress-corrosion cracking. © 1983.}, Doi = {10.1016/0020-7225(83)90125-8}, Key = {Ciftan83} } @misc{fds36651, Author = {R.G. Brown}, Title = {The position space Green's function and its application to a non-muffin-tin band theory}, Year = {1982}, Month = {June}, Key = {fds36651} } @misc{fds36650, Author = {R.G. Brown}, Title = {Multiple scattering and non-muffin-tin band theory}, Year = {1980}, Month = {November}, Key = {fds36650} }