31 lines
751 B
Matlab
31 lines
751 B
Matlab
function E = energytotal(psi,Params,Transf,VDk,V)
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%Parameters
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KEop= 0.5*(Transf.KX.^2+Transf.KY.^2+Transf.KZ.^2);
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normfac = Params.Lx*Params.Ly*Params.Lz/numel(psi);
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% DDIs
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frho = fftn(abs(psi).^2);
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Phi = real(ifftn(frho.*VDk));
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Eddi = 0.5*Params.gdd*Phi.*abs(psi).^2;
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% EddiTot = trapz(Eddi(:))*Transf.dx*Transf.dy*Transf.dz;
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%Kinetic energy
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% psik = ifftshift(fftn(fftshift(psi)))*normfac;
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Ekin = KEop.*abs(fftn(psi)*normfac).^2;
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Ekin = trapz(Ekin(:))*Transf.dkx*Transf.dky*Transf.dkz/(2*pi)^3;
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% Potential energy
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Epot = V.*abs(psi).^2;
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%Contact interactions
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Eint = 0.5*Params.gs*abs(psi).^4;
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%Quantum fluctuations
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Eqf = 0.4*Params.gammaQF*abs(psi).^5;
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E = Ekin + trapz(Epot(:) + Eint(:) + Eddi(:) + Eqf(:))*Transf.dx*Transf.dy*Transf.dz; |