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Karthik 2024-06-13 18:27:02 +02:00
parent cfe15aa13d
commit 570995f3f5
3 changed files with 54 additions and 41 deletions
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5
Dipolar Gas Simulator/+Scripts/test.m
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@ -17,8 +17,9 @@ OptionsStruct.CutoffType = 'Cylindrical';
OptionsStruct.TrapPotentialType = 'Harmonic'; OptionsStruct.TrapPotentialType = 'Harmonic';
OptionsStruct.SimulationMode = 'ImaginaryTimeEvolution'; % 'ImaginaryTimeEvolution' | 'RealTimeEvolution' OptionsStruct.SimulationMode = 'ImaginaryTimeEvolution'; % 'ImaginaryTimeEvolution' | 'RealTimeEvolution'
OptionsStruct.TimeStep = 50e-06; % in s OptionsStruct.TimeStep = 50E-6; % in s
OptionsStruct.SimulationTime = 4e-03; % in s OptionsStruct.SimulationTime = 2E6; % in s
OptionsStruct.EnergyTolerance = 5E-10;
OptionsStruct.SaveData = true; OptionsStruct.SaveData = true;
OptionsStruct.SaveDirectory = './Data'; OptionsStruct.SaveDirectory = './Data';

10
Dipolar Gas Simulator/+Simulator/@DipolarGas/DipolarGas.m
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@ -12,6 +12,8 @@ classdef DipolarGas < handle & matlab.mixin.Copyable
SimulationMode; SimulationMode;
TimeStep; TimeStep;
SimulationTime; SimulationTime;
EnergyTolerance;
MinimumTimeStep;
%Flags %Flags
@ -46,7 +48,11 @@ classdef DipolarGas < handle & matlab.mixin.Copyable
@(x) any(strcmpi(x,{'ImaginaryTimeEvolution','RealTimeEvolution'}))); @(x) any(strcmpi(x,{'ImaginaryTimeEvolution','RealTimeEvolution'})));
addParameter(p, 'TimeStep', 5E-4,... addParameter(p, 'TimeStep', 5E-4,...
@(x) assert(isnumeric(x) && isscalar(x) && (x > 0))); @(x) assert(isnumeric(x) && isscalar(x) && (x > 0)));
addParameter(p, 'SimulationTime', 3,... addParameter(p, 'SimulationTime', 2e6,...
@(x) assert(isnumeric(x) && isscalar(x) && (x > 0)));
addParameter(p, 'EnergyTolerance', 1e-10,...
@(x) assert(isnumeric(x) && isscalar(x) && (x > 0)));
addParameter(p, 'MinimumTimeStep', 1e-6,...
@(x) assert(isnumeric(x) && isscalar(x) && (x > 0))); @(x) assert(isnumeric(x) && isscalar(x) && (x > 0)));
addParameter(p, 'DebugMode', false,... addParameter(p, 'DebugMode', false,...
@islogical); @islogical);
@ -68,6 +74,8 @@ classdef DipolarGas < handle & matlab.mixin.Copyable
this.SimulationMode = p.Results.SimulationMode; this.SimulationMode = p.Results.SimulationMode;
this.TimeStep = p.Results.TimeStep; this.TimeStep = p.Results.TimeStep;
this.SimulationTime = p.Results.SimulationTime; this.SimulationTime = p.Results.SimulationTime;
this.EnergyTolerance = p.Results.EnergyTolerance;
this.MinimumTimeStep = p.Results.MinimumTimeStep;
this.DebugMode = p.Results.DebugMode; this.DebugMode = p.Results.DebugMode;
this.DoSave = p.Results.SaveData; this.DoSave = p.Results.SaveData;

16
Dipolar Gas Simulator/+Simulator/@DipolarGas/setupParameters.m
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@ -46,11 +46,10 @@ Params.wz = 2*pi*this.TrapFrequencies(3);
Params.gamma_S = 7.5*10^(-3); % gamma for the stochastic GPE Params.gamma_S = 7.5*10^(-3); % gamma for the stochastic GPE
Params.muchem = 12.64*Params.wz/w0; % fixing the chemical potential for the stochastic GPE Params.muchem = 12.64*Params.wz/w0; % fixing the chemical potential for the stochastic GPE
Params.Etol = 5e-10; % Tolerances Params.Etol = this.EnergyTolerance; % Tolerances
Params.rtol = 1e-5; Params.cut_off = this.SimulationTime; % sometimes the imaginary time gets a little stuck
Params.cut_off = 2e6; % sometimes the imaginary time gets a little stuck
% even though the solution is good, this just stops it going on forever % even though the solution is good, this just stops it going on forever
Params.mindt = 1e-6; % Minimum size for a time step using adaptive dt Params.mindt = this.MinimumTimeStep; % Minimum size for a time step using adaptive dt
% ================ Parameters defined by those above ================ % % ================ Parameters defined by those above ================ %
@ -83,6 +82,11 @@ end
Params.gammaQF = 128/3*sqrt(pi*(Params.as/l0)^5)*Q5; Params.gammaQF = 128/3*sqrt(pi*(Params.as/l0)^5)*Q5;
% Loading the rest into Params % Loading the rest into Params
Params.hbar = hbar; Params.kbol = kbol; Params.mu0 = mu0; Params.muB = muB; Params.a0 = a0; Params.hbar = hbar;
Params.w0 = w0; Params.l0 = l0; Params.kbol = kbol;
Params.mu0 = mu0;
Params.muB = muB;
Params.a0 = a0;
Params.w0 = w0;
Params.l0 = l0;
end end