Difference between revisions of "Tutorials:Parameters"
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temperature is not given
Revision as of 00:47, 2 March 2007
The following input parameters are common to most of the ALPS applications
ALPS applications on lattices specify the lattice with the following three parameters
|LATTICE_LIBRARY||lattices.xml||path to a file containing lattice descriptions|
|LATTICE||name of the lattice, specified by dimensionality, extent and unit cell.|
|GRAPH||as an alternative to a lattice, also a specific arbitrary graph defined in the lattice library can be specified.|
In addition, the lattice description can require further parameters (e.g. L or W) as specified in the lattice description file.
ALPS quantum lattice models can be specified using the following parameters
|MODEL_LIBRARY||models.xml||path to a file containing model descriptions</td>|
|MODEL||name of the model (for example "spin" or "boson")|
The model description can also require further parameters (e.g. S=1/2 or S=1, h=0.5 for spin models, t=1.5 or mu=0.5 for boson models) as specified in the model description file.
Parameters for finite temperature simulations
|BETA||inverse of temperature (if temperature is not given|
Parameters for Monte Carlo simulations
|SEED||0||The random number seed used in the next run. After using a seed in the creation of a Monte Carlo run, this value gets incremented by one.|
|WORK_FACTOR||1||A factor by which the work that needs to be done for a simulation is multiplied in load balancing.|
|SWEEPS||number of Monte Carlo steps (after thermalization)|
|THERMALIZATION||Number of Monte Carlo sweeps for thermalization|