Difference between revisions of "ALPS 2 Tutorials:MC-01 Equilibration"

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(Using command line)
(Example: Quantum Monte Carlo (directed worm algorithm) simulations)
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== Example: Quantum Monte Carlo (directed worm algorithm) simulations ==
 
== Example: Quantum Monte Carlo (directed worm algorithm) simulations ==
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As an example, we consider a Quantum Monte Carlo simulation implemented in the directed worm algorithm for boson Hubbard model in square lattice geometry of size 20<sup>2</sup>.
  
 
=== Using command line ===
 
=== Using command line ===
  
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The parameter file [http://alps.comp-phys.org/static/tutorials2.1.0/mc-01b-equilibration/parm1a parm1a]
  
 
  LATTICE="square lattice"
 
  LATTICE="square lattice"

Revision as of 16:01, 27 August 2013

Equilibration

Rule of thumb: All Monte Carlo simulations have to be equilibrated before taking measurements.

Example: Quantum Monte Carlo (directed worm algorithm) simulations

As an example, we consider a Quantum Monte Carlo simulation implemented in the directed worm algorithm for boson Hubbard model in square lattice geometry of size 202.

Using command line

The parameter file parm1a

LATTICE="square lattice"
MODEL="boson Hubbard"

L=20  
Nmax=20

t=1.
U=16.
mu=32.

THERMALIZATION=10000
SWEEPS=100000 
SKIP=400

{T=1.0}