untitled1 � http://www.uesu.phys.waseda.ac.jp 2 Outline � � � � � � � � (H2O) 3 Tc (NH4)Cl T Tc NH4 NH4+ Cl− C6H5OH) 4 He 5 Ps Tc Ps (Tc−T)1/2 6 1 ( ) c C T T ε − = − 1 2 ( ) c C T T ε − = − (T≥Tc), (T<Tc) Landau-Ginzburg � Landau � P F R P P G0 RP=P* 7 � P 2 4 1 1 2 4 F P P α β = + T>Tc T Tc 0 ( ) c T T α α = − F P � E=0) / 0 F P ∂ ∂ = 2 2 / 0 F P ∂ ∂ > 2 4 0 1 1 ( ) 2 4 c F T T P P EP α β = − + − 0 s P
