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Finite-size effects in presence of gravity: The behavior of the susceptibility in and films near the liquid-vapor critical point
Daniel Dantchev, Joseph Rudnick, M. Barmatz
We study critical point finite-size effects on the behavior of susceptibility of a film placed in the Earth's gravitational field. The fluid-fluid and substrate-fluid interactions…
Casimir force in O(n) lattice models with a diffuse interface
Daniel Dantchev, Daniel Grüneberg
On the example of the spherical model we study, as a function of the temperature , the behavior of the Casimir force in O(n) systems with a diffuse interface and slab geometry $…
Interplay of critical Casimir and dispersion forces
Daniel Dantchev, Frank Schlesener, S. Dietrich
Using general scaling arguments combined with mean-field theory we investigate the critical () and off-critical () behavior of the Casimir forces in fluid f…
Finite-size effects on the behavior of the susceptibility in van der Waals films under boundary conditions
Daniel Dantchev, Joseph Rudnick, M. Barmatz
We study critical point finite-size effects in the case of the susceptibility of a film in which interactions are characterized by a van der Waals-type power law tail. The geometry…
Excess free energy and Casimir forces in systems with long-range interactions of van-der-Waals type: General considerations and exact spherical-model results
Daniel Dantchev, H. W. Diehl, Daniel Grüneberg
We consider systems confined to a -dimensional slab of macroscopic lateral extension and finite thickness that undergo a continuous bulk phase transition in the limit $L\to\…
Critical Casimir forces for systems with long-range interaction in the spherical limit
H. Chamati, D. Danchev
We present exact results on the behavior of the thermodynamic Casimir force and the excess free energy in the framework of the -dimensional spherical model with a power law long…