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Cosmetic changes.

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Karthik 2024-11-18 13:43:12 +01:00
parent dd15eb406a
commit 551c16dd84
2 changed files with 41 additions and 41 deletions
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8
Dipolar-Gas-Simulator/+Scripts/run_locally.m
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@ -55,15 +55,15 @@ OptionsStruct = struct;
OptionsStruct.NumberOfAtoms = 1E5; OptionsStruct.NumberOfAtoms = 1E5;
OptionsStruct.DipolarPolarAngle = 0; OptionsStruct.DipolarPolarAngle = 0;
OptionsStruct.DipolarAzimuthAngle = 0; OptionsStruct.DipolarAzimuthAngle = 0;
OptionsStruct.ScatteringLength = 98.0676; % Critical point: 102.515; Triangular phase: 98.0676; Stripe phase: 102.2518; Honeycomb phase: 102.6441 OptionsStruct.ScatteringLength = 102.2518; % Critical point: 102.515; Triangular phase: 98.0676; Stripe phase: 102.2518; Honeycomb phase: 102.6441
OptionsStruct.TrapFrequencies = [10, 10, 72.4]; OptionsStruct.TrapFrequencies = [10, 10, 72.4];
OptionsStruct.TrapPotentialType = 'None'; OptionsStruct.TrapPotentialType = 'None';
OptionsStruct.NumberOfGridPoints = [128, 128]; OptionsStruct.NumberOfGridPoints = [128, 128];
OptionsStruct.Dimensions = [7.5, 7.5]; % Critical point: 6.996; Triangular phase: 7.5; Stripe phase: 6.972; Honeycomb phase: 6.239 for both for Atom Number fixed to 1E5 OptionsStruct.Dimensions = [6.972, 6.972]; % Critical point: 6.996; Triangular phase: 7.5; Stripe phase: 6.972; Honeycomb phase: 6.239 for both for Atom Number fixed to 1E5
OptionsStruct.TimeStepSize = 5E-6; % in s OptionsStruct.TimeStepSize = 5E-6; % in s
OptionsStruct.TimeCutOff = 1E5; % in s OptionsStruct.TimeCutOff = 1E5; % in s
OptionsStruct.EnergyTolerance = 5E-10; OptionsStruct.EnergyTolerance = 5E-10;
OptionsStruct.ResidualTolerance = 1E-05; OptionsStruct.ResidualTolerance = 1E-05;

74
Dipolar-Gas-Simulator/+VariationalSolver2D/@DipolarGas/setupParameters.m
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@ -1,43 +1,43 @@
function [Params] = setupParameters(this) function [Params] = setupParameters(this)
CONSTANTS = Helper.PhysicsConstants; CONSTANTS = Helper.PhysicsConstants;
hbar = CONSTANTS.PlanckConstantReduced; % [J.s] hbar = CONSTANTS.PlanckConstantReduced; % [J.s]
kbol = CONSTANTS.BoltzmannConstant; % [J/K] kbol = CONSTANTS.BoltzmannConstant; % [J/K]
mu0 = CONSTANTS.VacuumPermeability; % [N/A^2] mu0 = CONSTANTS.VacuumPermeability; % [N/A^2]
muB = CONSTANTS.BohrMagneton; % [J/T] muB = CONSTANTS.BohrMagneton; % [J/T]
a0 = CONSTANTS.BohrRadius; % [m] a0 = CONSTANTS.BohrRadius; % [m]
m0 = CONSTANTS.AtomicMassUnit; % [kg] m0 = CONSTANTS.AtomicMassUnit; % [kg]
w0 = 2*pi*61.6582; % Angular frequency unit [s^-1] w0 = 2*pi*61.6582; % Angular frequency unit [s^-1]
mu0factor = 0.3049584233607396; % =(m0/me)*pi*alpha^2 -- me=mass of electron, alpha=fine struct. const. mu0factor = 0.3049584233607396; % =(m0/me)*pi*alpha^2 -- me=mass of electron, alpha=fine struct. const.
% mu0=mu0factor *hbar^2*a0/(m0*muB^2) % mu0=mu0factor *hbar^2*a0/(m0*muB^2)
% Number of points in each direction % Number of points in each direction
Params.Nx = this.NumberOfGridPoints(1); Params.Nx = this.NumberOfGridPoints(1);
Params.Ny = this.NumberOfGridPoints(2); Params.Ny = this.NumberOfGridPoints(2);
% Dimensions (in units of l0) % Dimensions (in units of l0)
Params.Lx = this.Dimensions(1); Params.Lx = this.Dimensions(1);
Params.Ly = this.Dimensions(2); Params.Ly = this.Dimensions(2);
% Mass, length scale % Mass, length scale
Params.m = CONSTANTS.Dy164Mass; Params.m = CONSTANTS.Dy164Mass;
l0 = sqrt(hbar/(Params.m*w0)); % Defining a harmonic oscillator length l0 = sqrt(hbar/(Params.m*w0)); % Defining a harmonic oscillator length
% Atom numbers % Atom numbers
Params.N = this.NumberOfAtoms; Params.N = this.NumberOfAtoms;
% Dipole angle % Dipole angle
Params.theta = this.DipolarPolarAngle; % pi/2 dipoles along x, theta=0 dipoles along z Params.theta = this.DipolarPolarAngle; % pi/2 dipoles along x, theta=0 dipoles along z
Params.phi = this.DipolarAzimuthAngle; Params.phi = this.DipolarAzimuthAngle;
% Dipole lengths (units of muB) % Dipole lengths (units of muB)
Params.mu = CONSTANTS.DyMagneticMoment; Params.mu = CONSTANTS.DyMagneticMoment;
% Scattering lengths % Scattering lengths
Params.as = this.ScatteringLength*a0; Params.as = this.ScatteringLength*a0;
% Trapping frequencies % Trapping frequencies
Params.wx = 2*pi*this.TrapFrequencies(1); Params.wx = 2*pi*this.TrapFrequencies(1);
Params.wy = 2*pi*this.TrapFrequencies(2); Params.wy = 2*pi*this.TrapFrequencies(2);
Params.wz = 2*pi*this.TrapFrequencies(3); Params.wz = 2*pi*this.TrapFrequencies(3);
% Tolerances % Tolerances
Params.Etol = this.EnergyTolerance; Params.Etol = this.EnergyTolerance;
@ -64,18 +64,18 @@ function [Params] = setupParameters(this)
% ================ Parameters defined by those above ================ % % ================ Parameters defined by those above ================ %
% Contact interaction strength (units of l0/m) % Contact interaction strength (units of l0/m)
Params.gs = 4*pi*Params.as/l0; Params.gs = 4*pi*Params.as/l0;
% Dipole lengths % Dipole lengths
Params.add = mu0*Params.mu^2*Params.m/(12*pi*hbar^2); Params.add = mu0*Params.mu^2*Params.m/(12*pi*hbar^2);
% DDI strength % DDI strength
Params.gdd = 12*pi*Params.add/l0; %sometimes the 12 is a 4 --> depends on how Vdk (DDI) is defined Params.gdd = 12*pi*Params.add/l0; %sometimes the 12 is a 4 --> depends on how Vdk (DDI) is defined
% Trap gamma % Trap gamma
Params.gx = (Params.wx/w0)^2; Params.gx = (Params.wx/w0)^2;
Params.gy = (Params.wy/w0)^2; Params.gy = (Params.wy/w0)^2;
Params.gz = (Params.wz/w0)^2; Params.gz = (Params.wz/w0)^2;
% == Calculate LHY correction to account for quantum fluctuations == % % == Calculate LHY correction to account for quantum fluctuations == %
@ -90,14 +90,14 @@ function [Params] = setupParameters(this)
Q5 = real(Q5); Q5 = real(Q5);
end 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.hbar = hbar;
Params.kbol = kbol; Params.kbol = kbol;
Params.mu0 = mu0; Params.mu0 = mu0;
Params.muB = muB; Params.muB = muB;
Params.a0 = a0; Params.a0 = a0;
Params.w0 = w0; Params.w0 = w0;
Params.l0 = l0; Params.l0 = l0;
end end