Temat: 03.65.Db - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Buckling Analysis of a Rotationally Restrained Single Walled Carbon Nanotube
Autorzy:: Yayli, M.
Powiązania:: https://bibliotekanauki.pl/articles/1398664.pdf
Data publikacji:: 2015-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 03.65.Db
02.30.Nw
02.30.Hq
61.46.+w
Opis:: This paper presents an analytical formulation of nonlocal elasticity theory for the buckling analysis of simply supported carbon nanotubes with rotational springs at both ends. The lateral displacement function is represented by a Fourier sine series expansion. Stoke's transformation is applied to construct the coefficient matrix of the corresponding systems of linear equations. This matrix gives more flexibility in boundary conditions. The accuracy of proposed method is validated for three well-known boundary conditions available in the literature. A very good agreement has been obtained. The present method permits to have more efficient stability matrix for calculating the buckling loads of carbon nanotubes with any desired boundary conditions.
Źródło:: Acta Physica Polonica A; 2015, 127, 3; 678-683
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Solution of Spinless Salpeter Equation with Generalized Hulthén Potential Using SUSYQM
Autorzy:: Ikot, A.
Isonguyo, C.
Chad-Umoren, Y.
Hassanabadi, H.
Powiązania:: https://bibliotekanauki.pl/articles/1398647.pdf
Data publikacji:: 2015-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 03.65.Ca
03.65.Pm
03.65.Db
Opis:: The solution of spinless Salpeter equation with generalized Hulthén potential using SUSYQM formalism is presented. We obtained approximately the energy eigenvalues and the corresponding wave function in a closed form for any arbitrary l state. We have also reported on the numerical result of our work.
Źródło:: Acta Physica Polonica A; 2015, 127, 3; 674-677
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Dirac-Deng-Fan Problem with Coulomb-Hulthen Tensor Interactions
Autorzy:: Ikot, A.
Hassanabadi, H.
Yazarloo, B.
Umo, M.
Zarrinkamar, S.
Powiązania:: https://bibliotekanauki.pl/articles/1203879.pdf
Data publikacji:: 2014-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 03.65.Ge
03.65.Pm
03.65.Db
Opis:: The relativistic symmetries of the Dirac equation within the framework of spin and pseudospin symmetries is investigated for Deng-Fan potential including the Coulomb-like and Hulthen-type potential tensor interaction terms. The energy eigenvalues and the corresponding wave function are obtained using the parametric generalization of Nikiforov-Uvarov method. We have also reported some numerical results and figures to show the effect of the tensor interactions.
Źródło:: Acta Physica Polonica A; 2014, 126, 3; 656-662
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Green Function on a Quantum Disk for the Helmholtz Problem
Autorzy:: Benali, B.
Boudjedaa, B.
Meftah, M.
Powiązania:: https://bibliotekanauki.pl/articles/1399173.pdf
Data publikacji:: 2013-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 03.75.Lm
03.65.Db
02.30.Gp
02.30.Sa
Opis:: In this work, we present a new result which concerns the derivation of the Green function relative to the time-independent Schrödinger equation in two-dimensional space. The system considered in this work is a quantal particle that moves in an axi-symmetric potential. At first, we have assumed that the potential V(r) to be equal to a constant $V_0$ inside a disk (radius a) and to be equal to zero outside the disk. We have used, to derive the Green function, the continuity of the solution and of its first derivative, at r=a (at the edge). Secondly, we have assumed that the potential V(r) is equal to zero inside the disk and is equal to $V_0$ outside the disk (the inverted potential). Here, also we have used the continuity of the solution and its derivative to obtain the associate Green function showing the discrete spectra of the Hamiltonian.
Źródło:: Acta Physica Polonica A; 2013, 124, 4; 636-640
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: SU(2) Coherent State Path Integral Investigation of the Holstein Dimer
Autorzy:: Hakioğlu, T.
Ivanov, V. A.
Zhuravlev, M. Ye.
Powiązania:: https://bibliotekanauki.pl/articles/2013732.pdf
Data publikacji:: 2000-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 03.65.Db
71.36.+c
64.60.Ak
Opis:: The SU(2) coherent state path integral is used to investigate the partition function of the Holstein dimer. This approach naturally takes into account the dynamical symmetry of the model. The ground-state energy and the number of the phonons are calculated as functions of the parameters of the Hamiltonian. The renormalizations of the phonon frequency and electron hopping for bonding and antibonding states are considered. The destruction of quasiclassical mean field solution is discussed.
Źródło:: Acta Physica Polonica A; 2000, 97, 5; 927-930
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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