Biomedical subjects

K A Bugaev

Publications and source records attributed to K A Bugaev.

4 recordsLinked to original sources

PubMed2005

Surface partition of large clusters.

The surface partition of large clusters is derived analytically for a simple statistical model by using the Laplace-Fourier transformation method. In the limit of small amplitude deformations, a suggested "hills and dales model" reproduces the leading term of the Fisher result for the surface entropy to within a few percent. The model also gives the degeneracy prefactor of large clusters. The surface partition of finite clusters is also discussed.

Journal Article↗

PubMed2005

The complement: a solution to liquid drop finite size effects in phase transitions.

The effects of the finite size of a liquid drop undergoing a phase transition are described in terms of the complement, the largest (but mesoscopic) drop representing the liquid in equilibrium with the vapor. Vapor cluster concentrations, pressure, and density from fixed mean density lattice gas (Ising) calculations are explained in terms of the complement generalization of Fisher's model. Accounting for this finite size effect is important for extracting the infinite nuclear matter phase diagram from experimental data.

Journal Article↗

PubMed2003

Relativistic kinetic equations for finite domains and the freeze-out problem.

The relativistic kinetic equations for two domains separated by a hypersurface with both spacelike and timelike parts are derived. The particle exchange between the domains separated by timelike boundaries generates source terms and modifies the collision term of the kinetic equation. The correct hydrodynamic equations for the "hydro+cascade" models are obtained and their differences from existing freeze-out models of the hadronic matter are discussed.

Journal Article↗

PubMed2002

Omega, J/psi, and psi(') production in nuclear collisions and quark-gluon-plasma hadronization.

The transverse mass spectra of Omega, J/psi, and psi' in Pb+Pb collisions at 158A GeV are studied within a hydrodynamical model of the quark-gluon-plasma expansion and hadronization. The model reproduces the existing data with the common hadronization parameters: temperature T = T(H) congruent with 170 MeV and average collective transverse velocity v(T) congruent with 0.2.

Journal Article↗