Autor: Zasada, I. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Particles, phases, fields
Autorzy:: Wojtczak, L.
Urbaniak-Kucharczyk, A.
Zasada, I.
Rutkowski, J.
Powiązania:: https://bibliotekanauki.pl/articles/1358839.pdf
Data publikacji:: 1996
Wydawca:: Polska Akademia Nauk. Instytut Matematyczny PAN
Opis:: The physical properties of particles and phasesare considered in connection with their description by means of the deformation of space-time. The analogy between particle trajectories and phase boundaries is discussed. The geometry and its curvature is related to the Clifford algebraic structure whose construction in terms of the theory of deformation leads to the expected solutions for correlation functions referring to spectroscopy and scattering problems. The stochastic nature of space-time is reflected by fluctuations of distances and time intervals.
Źródło:: Banach Center Publications; 1996, 37, 1; 351-360
0137-6934
Pojawia się w:: Banach Center Publications
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Topological Correlations in a Layer Adsorbed on a Crystal Surface
Autorzy:: Wojtczak, L
Zasada, I
Bosse Le, J. C
Lopez, J
Rousseau, J
Powiązania:: https://bibliotekanauki.pl/articles/896312.pdf
Data publikacji:: 1990
Wydawca:: Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Opis:: The incoherent scattering of electrons by a layer adsorbed at a single crystal surface is determined by the topological correlations of elements forming the adsorbed layer. The model for the description of atoms or molecules adsorbed on the surface is formulated in terms of occupation operators which are expressed in terms of pseudospin operators with a given spin value. The correlations can be determined by the fluctuation dissipation theorem in connection with the susceptibility or given directly by means of the Green functions properly chosen. An example of the topological or chemical disorder of two components is considered in detail. The calculations of the topological correlations allow us to find the incoherent scattering amplitude as a function of the surface coverage which can be experimentally detected.
Źródło:: Acta Physicae Superficierum; 1990, 1
0867-2997
Pojawia się w:: Acta Physicae Superficierum
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Two-Site Correlations in a Surface Layer Adsorbed on the Crystal
Autorzy:: Wojtczak, L.
Zasada, I.
Le Bossé, J. C.
Lopez, J.
Rousseau, J.
Powiązania:: https://bibliotekanauki.pl/articles/1891742.pdf
Data publikacji:: 1991-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 68.35.-p
Opis:: The incohorent scattering of electrons by layer adsorbed at a single crystal surface is determined by the Fourier transform of correlation functions of elements forming this layer. The model of the description of atoms or molecules adsorbed on the surface is formulated by the occupation operators which are represented by the pseudospin operators. The calculations of the correlation functions are performed by means of methods which consider a given pair of elements embedded in the effective field of remaining elements of the system while the interaction between the elements of the pair are taken in its exact form. Two approaches are presented here, i.e. the cumulant average and constant coupling approximations, and the case of binary chemisorption is considered in detail. The problem of the correlation symmetry is also discussed.
Źródło:: Acta Physica Polonica A; 1991, 80, 5; 631-648
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Monte Carlo Simulation of Partially Ordered Atomic Layers Adsorbed on the Monocristalline Surfaces
Autorzy:: Wiatrowski, G.
Le Bossé, J. C.
Lopez, J.
Rousseau, J.
Zasada, I.
Powiązania:: https://bibliotekanauki.pl/articles/1929295.pdf
Data publikacji:: 1993-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 68.35.-p
Opis:: The calculations of the correlations functions and structure factors are performed by means of the Monte Carlo simulation. The results for O/Ni(001) system are presented and compared with those obtained using self-consistent molecular field approximation and cumulant expansion method. The simulation for more complex system CO/Pt(111) is also performed. The calculations of the topological correlations allow us to find the coverage dependence of the incoherent scattering amplitude which can be experimentally detected.
Źródło:: Acta Physica Polonica A; 1993, 83, 5; 587-596
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Informacja