Ginzburg-Landau theory for higher order phase transition |
| |
Authors: | C.E. Ekuma G.C. AsombaC.M.I. Okoye |
| |
Affiliation: | Department of Physics and Astronomy, University of Nigeria, Nsukka, Nigeria |
| |
Abstract: | Ginzburg-Landau theory for studying phase transitions of higher order has been derived using coarse graining and lattice formulation within Ehrenfest thermodynamics. Our developed Hamiltonian leads directly to the functional of the system. We studied the evolution of the order parameter using our developed model equations for third and fourth order phase transitions. The periodic nature of the system can be likened to spatially varying periodic soliton/antisoliton lattice of holes in condensate. This is different from what one observes for any conventional solitary wave in the second order phase regime. |
| |
Keywords: | Ginzburg-Landau theory Ehrenfest thermodynamics Higher order phase transitions Bogoliubov inequality Coarse-graining |
本文献已被 ScienceDirect 等数据库收录! |