Temat: Spin - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: On the old and new matrix representations of the Clifford algebra for the Dirac equation and quantum field theory
Autorzy:: Simulik, Volodimir
Powiązania:: https://bibliotekanauki.pl/articles/1179016.pdf
Data publikacji:: 2017
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Clifford algebra
Dirac equation
arbitrary spin
spinor field
Opis:: The standard 16-dimensional and new 64-dimensional representations of the Clifford algebras in the terms of Dirac matrices are under consideration. The matrix 64-dimensional representation of the Clifford algebra over the field of real numbers is presented. The relationship of this representation to the matrix representation of 28-dimensional algebra, which contains the standard and additional spin operators, is given. The role of matrix representations of the Clifford algebra in the quantum field theory is described. The role of matrix representations of and algebras in the proof of Fermion-Boson duality property of the Dirac and higher spin Dirac-like equations is demonstrated.
Źródło:: World Scientific News; 2017, 87; 238-245
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Effect of Cd Doping on Structural and Some Optical Studies of Nano CuO Films Prepared by Sol–Gel Technique
Autorzy:: Kadhim, Raheem G.
Ban, Raheem Saleh Kzar
Powiązania:: https://bibliotekanauki.pl/articles/1182823.pdf
Data publikacji:: 2017
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Cd
CuO
Sol–Gel Spin Coating Technique
Thin Film
Opis:: This research deals with the study of the structural and optical properties of CuO and Cd doped CuO nano films in thickness 100nm were deposited on a glass substrate using sol-gel spin coating technique. XRD results indicated that the films are polycrystalline and have monoclinic structure with a preferred orientation along ((111).) ̅ and the grain size increase with increasing concentration Cd. Data of AFM indicate that the surface of films is smooth. From SEM image observed the particles are smallest an even particle distribution on a smooth surface. The optical transition in the CuO and (Cd– doped CuO) thin films are observed to be allowed direct transition. The value of the optical energy gap decreases with increasing of (Cd) for all samples.
Źródło:: World Scientific News; 2017, 64; 69-83
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Structural and Optical Properties of CuO Doped (Li) Thin Films Prepared by Sol-Gel Technique
Autorzy:: Kadhim, Raheem G.
Kzar, Kzar
Powiązania:: https://bibliotekanauki.pl/articles/1188084.pdf
Data publikacji:: 2016
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: CuO
Li
Sol-gel
spin coating
x-ray diffraction
UV- Visible
Opis:: CuO and (Li–doped CuO) thin films have been prepared on glass substrates by sol-gel method using spin coating technique. X-ray diffraction (XRD) results reveal that the deposited CuO and (Li– doped CuO) thin films monoclinic crystal structure and the grain size increase with increasing concentration Li. The optical transition in the CuO and (Li– doped CuO) thin films are observed to be allowed direct transition. The value of the optical energy gap decreases with increasing of (Li) for all samples.
Źródło:: World Scientific News; 2016, 56; 56-66
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Analytic spin and pseudospin solutions to the Dirac equation for the Manning-Rosen plus shifted Deng-Fan potential and Yukawa-like tensor interaction
Autorzy:: Ita, Benedict Iserom
Hitler, Louis
Nzeata-Ibe, Nelson
Innocent, Joseph
Amos, Pigwe Isa
Magu, Thomas Odey
Ivan, Opara
Powiązania:: https://bibliotekanauki.pl/articles/1178342.pdf
Data publikacji:: 2017
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Dirac equation
Manning-Rosen potential
Nikiforov-Uvarov Method
shifted Deng-Fan potential
spin and pseudospin symmetry
Opis:: We solve the Dirac equation for the Manning-Rosen plus shifted Deng-Fan potential including a Yukawa-like tensor potential with arbitrary spin–orbit coupling quantum number κ. In the framework of the spin and pseudospin (pspin) symmetry, we obtain the energy eigenvalue equation and the corresponding eigenfunctions in closed form by using the Nikiforov–Uvarov method. Also Special cases of the potential as been considered and their energy eigen values as well as their corresponding eigen functions are obtained for both relativistic and non-relativistic scope.
Źródło:: World Scientific News; 2017, 81, 2; 292-304
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: Lanczos potential for the Weyl tensor
Autorzy:: Morales, J.
Ovando, G.
López-Bonilla, J.
López-Vázquez, R.
Powiązania:: https://bibliotekanauki.pl/articles/1164250.pdf
Data publikacji:: 2018
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: 2-spinors
Conformal tensor
Lanczos generator
Newman-Penrose formalism
Petrov classification
Spin coefficients
Weyl-Lanczos equations
Opis:: For arbitrary spacetimes with Petrov types O, N and III, we indicate general results about the Lanczos potential for the corresponding Weyl tensor.
Źródło:: World Scientific News; 2018, 108; 237-244
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

Artykuł

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