The thermodynamic Casimir force: A Monte Carlo study of the crossover between the ordinary and the normal surface universality class

Understand

We study the crossover from the ordinary to the normal surface universality class in the three-dimensional Ising universality class.

• This crossover is relevant for the behavior of films of binary mixtures near the demixing point and a weak adsorption at one or both surfaces.
• We perform Monte Carlo simulations of the improved Blume-Capel model on the simple cubic lattice.
• We consider systems with film geometry, where various boundary conditions are applied.