Winter, 2009

Welcome to the Physics 780.20 Computational Physics home page!

URL: http://www.physics.ohio-state.edu/~ntg/780/compphys.php

The course information is available here plus lots of supplementary
info. Please check this page regularly.

- 10-Mar-2009 --- During finals week, there will be office hours in Sm1094 from 2:30pm-5pm on Monday and Wednesday (usual class time) for help with projects (or anything else).
- 10-Mar-2009 --- Session 15 notes are available below under 1094 Sessions.
- 07-Mar-2009 --- **BUG ALERT** A bug has been fixed in the variational Monte Carlo code for Session 13 (thanks to Kyle Wendt for first discovering and identifying the bug). The step size was not reset each time the parameter was changed, which led to very different outcomes based on what parameter range was chosen. (As we've seen elsewhere, Metropolis gives poor results if an unsuitable step size is chosen.) An explicit call to set the step size has been added. Be sure to use the new session13.zip.
- 28-Feb-2009 --- Assignment #4 is available under Assigned problems, hints, and solutions. As you'll see, it is only a progress report on your project.
- 07-Feb-2009 --- A partial project list from past years is available.
- 22-Dec-2008 --- For your reference: The online GSL reference manual.

- Course description and info, and gameplan [For your info: last year's course pages.]
- Assignments
- 1094 Sessions
- General handouts and computer codes
- Send feedback to the instructor -- anonymous or not
- Resources
- Downloads --- scripts, programs, etc.
- References -- Programming references, other texts, and useful web sites
- Mathematica Resources -- Links to tutorials for Mathematica, example notebooks, and other things

Copies of any handouts are available from Prof. Furnstahl or online below. After the first class, please read the session notes before that session meets.

Date of Session | Guide | Notes | Packed Files | Handouts |
---|---|---|---|---|

01/05/09 | Session 1 | notes [pdf] | session01.zip | Printouts of "area" code [pdf] [ps]; Unix commands [ps]; C++ options [pdf] [ps]; GSL intro [ps]; Other Session 1 code printouts [pdf] [ps] |

01/07/09 | Session 2 | notes [pdf] | session02.zip | Gnuplot basics [pdf]; Gnuplot tutorial; |

01/12/09 | Session 3 | notes [pdf] | session03.zip | Fitting with Gnuplot [pdf] [ps]; Formatting with C++ Manipulators (UIC notes) [pdf]; integ_test.cpp and integ_routines.cpp [pdf] [ps] printouts; derivative_test_simple.cpp [pdf] [ps] printout; |

01/21/09 | Session 4 | notes [pdf] | session04.zip | Gnuplot plot files [pdf] [ps]; Integrals with Singularities [pdf] [ps]; |

01/23/09 | Session 5 | notes [pdf] | session05.zip | Random round-off? [pdf] [ps]; nan_test.cpp [ps], eigen_tridiagonal.cpp [ps], eigen_basis.cpp [ps], and harmonic_oscillator.cpp [ps] printouts |

01/30/09 | Session 6 | notes [pdf] | session06.zip | diffeq_routines.cpp [ps], diffeq_test.cpp [ps] and new eigen_tridiagonal_class.cpp (with class definition) [ps] printouts |

02/04/09 | Session 7 | notes [pdf] | session07.zip | diffeq_oscillations.cpp [ps]; eigen_basis_class.cpp (first pass) [ps] |

02/09/09 | Session 8 | notes [pdf] | session08.zip | Plots of damped oscillations [pdf] [ps]; Circle class and test printout [ps]; filename_test.cpp printout [ps]; GnuplotPipe class printout [ps]; diffeq_pendulum.cpp printout [ps]; nonlinear Mathematica notebook; |

02/11/09 | Session 9 | notes [pdf] | session09.zip | GSL interpolation [pdf] [ps]; private_vs_public printout [ps]; GslSpline printout [ps]; ode_test.cpp printout [ps]; |

02/16/09 | Session 10 | notes [pdf] | session10.zip | Pendulum Power Spectra [pdf] [ps]; ode_test_class.cpp and classes printout [ps]; multifit_test.cpp printout [ps]; multimin_test.cpp printout [ps]; |

02/18/09 | Session 11 | notes [pdf] | session11.zip | man pages for random, urandom [ps]; gaussian_random.cpp printout [ps]; random_walk.cpp printout [ps]; RandomWalk_test.cpp printout [ps]; |

02/23/09 | Session 12 | notes [pdf] | session12.zip | sampling_test.cpp printout [ps]; ising_model.cpp printout [ps]; ising_opt.cpp printout [ps]; |

03/04/09 | Session 13 | notes [pdf] | session13.zip | autocorrelation_test.cpp printout [ps]; variational_SHO.cpp printout [ps]; |

03/09/09 | Session 14 | notes [pdf] | session14.zip | gdb debugging [pdf]; gdb reference card [ps]; check_primes.cpp printout [ps]; multimin_sa_compare.cpp printout [ps]; square_test.cpp printout [ps] |

03/11/09 | Session 15 | notes [pdf] | session15.zip | gnuplot 3d plots [pdf] [ps]; PDE code printouts [ps]; deltashell_boundstates.cpp printout [ps]; |

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A complete copy of M. Hjorth-Jensen's 2008 notes on "Computational Physics" is available as a PDF file.

Class Period | Reading | Topic |
---|---|---|

01/05/09 | M. Hjorth-Jensen, Preface (pdf) and Table of Contents (pdf) | Preface and Table of Contents |

01/05/09 | M. Hjorth-Jensen, Ch. 1 (pdf) | Overview of Computational Physics and what is covered. |

01/05/09 | M. Hjorth-Jensen, Ch. 2 (pdf) | C++ and Representation of Numbers. |

01/07/09 | M. Hjorth-Jensen, Ch. 3 (pdf) | Numerical Differentiation. |

01/12/09 | M. Hjorth-Jensen, Ch. 7 (pdf) | Numerical Integration. |

01/21/09 | M. Hjorth-Jensen, Ch. 4 (pdf) and Ch. 12 (pdf) | Linear Algebra and Eigensystems. |

01/30/09 | M. Hjorth-Jensen, Ch. 13 (pdf) | Differential Equations. |

02/11/09 | M. Hjorth-Jensen, Ch. 6 (pdf) | Numerical Interpolation, Extrapolation and Fitting of Data. |

02/25/09 | M. Hjorth-Jensen, Ch. 8 (pdf) | Outline of the Monte-Carlo Strategy |

02/25/09 | M. Hjorth-Jensen, Ch. 9 (pdf) | Random walks and the Metropolis Algorithm |

03/02/09 | M. Hjorth-Jensen, Ch. 10 (pdf) | Monte Carlo Methods in Statistical Physics |

03/02/09 | M. Hjorth-Jensen, Ch. 11 (pdf) | Quantum Monte-Carlo Methods |

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Click on the problem set number to get a copy of the assignment.

Due Date | Assignment | Comments |
---|---|---|

01/20/09 | #1 [pdf] | hints, suggestions, etc. |

02/02/09 | #2 [pdf] | hints, suggestions, etc. |

02/23/09 | #3 [pdf] | hints, suggestions, etc. |

03/06/09 | #4 [pdf] |

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You (mostly) have your choice of postscript (ps) or PDF format.

Last Updated | Handout | Comments |
---|---|---|

16-Nov-2003 | Bash Prompt HOWTO (pdf) | Creating and controlling terminal and xterm Bash prompts, compiled by Giles Orr. |

01-Jan-2004 | C++ Manipulators (pdf) | "Formatting with Manipulators" -- brief guide found on the web. |

01-Jan-2004 | C++ Options (ps) (pdf) | "Recommended C++ Options" -- options for g++ (GNU compiler) and icpc (Intel compiler) based on the recommendations in the GSL Reference manual. |

07-Mar-2008 | GDB Debugger (ps) (pdf) | "Using the GDB Debugger" -- A tutorial by example. |

01-Jan-2009 | Gnuplot basics (pdf) | "Plotting Data from a File with Gnuplot" |

16-Mar-2006 | Gnuplot manual (pdf) | "Gnuplot -- An Interactive Plotting Program" |

09-Jan-2005 | Gnuplot fitting (ps) (pdf) | "Finding the Slope of XY Data from a File with Gnuplot" |

15-Jan-2007 | Gnuplot plot files (ps) (pdf) | "Using a Plot File with Gnuplot" |

15-May-2008 | Gnuplot 3d plots (ps) (pdf) | "Three-Dimensional Plots with Gnuplot" |

01-Jan-2005 | GSL Introduction (ps) | GNU Scientific Library description from the online reference manual. |

06-Feb-2006 | GSL Interpolation (ps) (pdf) | "Using GSL Interpolation Functions" |

12-Nov-2002 | Input in C (ps) (pdf) | "Interactive Input in C" |

16-Jan-2005 | Round-off Errors (ps) (pdf) | A simple empirical investigation of the distribution of round-off errors. |

09-Jan-2005 | Tricky Integrals (ps) (pdf) | "Integrals with Singularities or Discontinuous Derivatives" |

01-Jan-2005 | Unix Commands (ps) | "Some Useful Unix Commands" based on various web summaries |

19-Feb-2006 | Xwin-32 Configuration (pdf) (Word) | Configuring and using the Xwin-32 X-windows emulator. |

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- Recommended gcc and g++ (and icpc, the Intel compiler) options (from the GSL Reference Manual).
- C and C++ programs from the Landau/Paez text
- Example programs that use the Gnu Scientific Library (GSL). Check out the online reference manual.
- Template makefile "make_program" and the template applied to "area.c" (called "make_area")

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If you use Internet Explorer on a Windows machine, selecting a Mathematica notebook link should automatically open Mathematica with that notebook. On Macs or linux machines or using other browsers, you can set this behavior.

Last Revised | Notebook | Comments |
---|---|---|

02/25/04 | Nonlinear Differential Equations | Mathematica notebook analyzing the Duffing equation. |

02/25/04 | Nonlinear Differential Equations: Pendulum | Mathematica notebook analyzing the physical pendulum. |

04/18/02 | Fourier Transform Pictures | Mathematica notebook showing in pictures how to project Fourier coefficients. |

04/18/02 | Square Wave | Mathematica notebook showing a square wave being built from sine waves. |

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Last Revised | Script/Program | Comments |
---|---|---|

12/28/05 | 780archive.pl | Perl script to create a compressed tape archive (tar.gz or tarz) file. Make sure it is declared executable (chmod +x 780archive.pl). |

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Your comments and suggestions are appreciated.

[OSU Physics] [Math and Physical Sciences] [Ohio State University]

Last modified: .

furnstahl.1@osu.edu