Difference between revisions of "ALPS 2 Tutorials:DWA-01 Revisiting MC05"
From ALPS
(→Preparing and running the simulation from the command line) |
(→Preparing and running the simulation from the command line) |
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LATTICE="square lattice"; | LATTICE="square lattice"; | ||
L=4; | L=4; | ||
| − | + | ||
MODEL="boson Hubbard"; | MODEL="boson Hubbard"; | ||
Nmax = 2; | Nmax = 2; | ||
U = 1.0; | U = 1.0; | ||
mu = 0.5; | mu = 0.5; | ||
| − | + | ||
T = 0.1; | T = 0.1; | ||
| − | + | ||
SWEEPS=500000; | SWEEPS=500000; | ||
THERMALIZATION=10000; | THERMALIZATION=10000; | ||
SKIP=500; | SKIP=500; | ||
| − | + | ||
{ t=0.01; } | { t=0.01; } | ||
{ t=0.02; } | { t=0.02; } | ||
Revision as of 13:17, 13 September 2013
Quantum phase transitions in the Bose-Hubbard model
As an example of the dwa QMC code we will study a quantum phase transition in the Bose-Hubbard mode.
Superfluid density in the Bose Hubbard model
Preparing and running the simulation from the command line
The parameter file parm1a sets up Monte Carlo simulations of the quantum Bose Hubbard model on a square lattice with 4x4 sites for a couple of hopping parameters (t=0.01, 0.02, ..., 0.1) using the dwa code.
LATTICE="square lattice";
L=4;
MODEL="boson Hubbard";
Nmax = 2;
U = 1.0;
mu = 0.5;
T = 0.1;
SWEEPS=500000;
THERMALIZATION=10000;
SKIP=500;
{ t=0.01; }
{ t=0.02; }
{ t=0.03; }
{ t=0.04; }
{ t=0.05; }
{ t=0.06; }
{ t=0.07; }
{ t=0.08; }
{ t=0.09; }
{ t=0.1; }
Using the standard sequence of commands you can run the simulation using the quantum dwa code
parameter2xml parm1a dwa --Tmin 10 --write-xml parm1a.in.xml
