WHAM implementation and testing

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SUMMARY

The discussion centers on the implementation of the Weighted Histogram Analysis Method (WHAM) for analyzing Monte Carlo simulations. The user expresses concerns about the accuracy of their implementation, which is based solely on the original paper by Ferrenberg and Swendsen. They seek additional resources, specifically books on numerical methods that cover WHAM, and reliable systems for validating results related to density of states and free energy. The user also mentions difficulties accessing the APS paper due to a paywall, which limits their ability to gather comprehensive information.

PREREQUISITES
  • Understanding of Monte Carlo simulations
  • Familiarity with the Weighted Histogram Analysis Method (WHAM)
  • Knowledge of density of states and free energy concepts
  • Basic proficiency in numerical methods
NEXT STEPS
  • Research comprehensive books on numerical methods that include WHAM
  • Explore online resources and forums discussing WHAM implementations
  • Investigate alternative algorithms for density of states analysis
  • Access academic papers through institutional subscriptions or alternative platforms
USEFUL FOR

This discussion is beneficial for researchers and practitioners in computational physics, particularly those working with Monte Carlo simulations and seeking to implement or validate WHAM for analyzing thermodynamic properties.

diegzumillo
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TL;DR
Weighted histogram analysis on monte carlo simulations
Hey all
I implemented WHAM to analyze my monte carlo simulations but I am always suspicious that it's not working properly. It gives results that makes sense most of the time but not always. The problem is that all I used is the original paper by Ferrenberg and Swendsen . I have no way of testing if my implementation has bugs.

What I'm asking is if there is a good source on the subject, a book on numerical methods that covers WHAM, maybe. Or maybe just a fool proof system that everyone knows what the results should look like for density of state and free energy based on specific pseudo random gaussians.
 
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Suggestion. Want about 20 references on the implementation, then google search: 'WHAM algorithm'
I got several that seem to me to be very usable implementations and discussions. Plus, I cannot see the aps.org paper - paywall. Unless someone else has used this recently the paywall will be an impediment for giving you a good answer. Some folks here no longer have access.
 

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