If neutrino mass is a function of the Higgs potential then minimum of the total thermodynamic potential \Omega ( which is the Higgs potential minus the neutrino pressure ) can shift from the standard electro-weak vev v = 246.2 GeV by a small amount which depends on the neutrino pressure .
If the neutrino mass is a very steep function of the Higgs field then the equilibrium thermodynamic potential can act like the dark energy with \omega \simeq - 1 .
Choosing the neutrino mass as logarithmic function of the Higgs field and a heavy mass scale , we find that the correct magnitude of the cosmological density of the present universe \rho _ { \lambda } \simeq ( 0.002 eV ) ^ { 4 } is obtained by choosing the heavy mass at the GUT scale .