38 citations · 50 across the 5 of their papers we have counts for
5 papers
Some new exact critical-point amplitudes
H. Chamati, D. M. Danchev, N. S. Tonchev
The scaling properties of the free energy and some of universal amplitudes of a group of models belonging to the universality class of the quantum nonlinear sigma model and the O(n…
On the Finite-Temperature Generalization of the C-theorem and the Interplay between Classical and Quantum Fluctuations
Daniel M. Danchev, Nicholay S. Tonchev
The behavior of the finite-temperature C-function, defined by Neto and Fradkin [Nucl. Phys. B {\bf 400}, 525 (1993)], is analyzed within a d -dimensional exactly solvable lattice m…
Exact Three Dimensional Casimir Force Amplitude, -function and Binder's Cumulant Ratio: Spherical Model Results
Daniel M. Danchev
The three dimensional mean spherical model on a hypercubic lattice with a film geometry under periodic boundary conditions is considered in the presence of an e…
Finite-size scaling properties and Casimir forces in an exactly solvable quantum statistical-mechanical model
H. Chamati, D. M. Danchev, N. S. Tonchev
A d-dimensional finite quantum model system confined to a general hypercubical geometry with linear spatial size L and ``temporal size'' 1/T (T - temperature of the system) is cons…
Surface critical exponents for a three-dimensional modified spherical model
D. M. Danchev, J. G. Brankov, M. E. Amin
A modified three-dimensional mean spherical model with a L-layer film geometry under Neumann-Neumann boundary conditions is considered. Two spherical fields are present in the mode…