Zobrazeno 1 - 10
of 135
pro vyhledávání: '"Luis Miguel Nieto"'
Publikováno v:
Machines, Vol 11, Iss 9, p 908 (2023)
In studies of dynamic stability and power quality, it is necessary to know the values of the mechanical parameters determining the transient response of wind turbines. Their exact values are not as decisive as the power curve, but an inaccurate estim
Externí odkaz:
https://doaj.org/article/b46abc808bdf42a3b8d698c295b4b8b2
Publikováno v:
Symmetry, Vol 13, Iss 9, p 1561 (2021)
In this article, we provide an expansion (up to the fourth order of the coupling constant) of the energy of the ground state of the Hamiltonian of a quantum mechanical particle moving inside a parabolic well in the x-direction and constrained by the
Externí odkaz:
https://doaj.org/article/56e272abed694ba1812a5128bfbb3894
Publikováno v:
Acta Polytechnica, Vol 57, Iss 6, Pp 385-390 (2017)
We propose a new approach to the problem of finding the eigenvalues (energy levels) in the discrete spectrum of the one-dimensional Hamiltonian with an attractive Gaussian potential by using the well-known Birman-Schwinger technique. However, in plac
Externí odkaz:
https://doaj.org/article/6b2ed41536894312932e040c3ec33a01
Publikováno v:
Symmetry, Vol 13, Iss 2, p 350 (2021)
We find supersymmetric partners of a family of self-adjoint operators which are self-adjoint extensions of the differential operator −d2/dx2 on L2[−a,a], a>0, that is, the one dimensional infinite square well. First of all, we classify these self
Externí odkaz:
https://doaj.org/article/442e5d1549984dabb10b07b8ac31c2b3
Publikováno v:
Symmetry, Vol 11, Iss 5, p 643 (2019)
We investigate the self-adjoint extensions of the Dirac operator of a massive one-dimensional field of mass m confined in a finite filament of length L. We compute the spectrum of vacuum fluctuations of the Dirac field under the most general dispersi
Externí odkaz:
https://doaj.org/article/06e5ec294e014557b857b41e7fc1fc96
Publikováno v:
Symmetry, Integrability and Geometry: Methods and Applications, Vol 7, p 029 (2011)
We make a detailed study of the first and second-order SUSY partners of a one-dimensional free Hamiltonian with a singular perturbation proportional to a Dirac delta function. It is shown that the second-order transformations increase the spectral ma
Externí odkaz:
https://doaj.org/article/9a36f1c1c79f421ab0c4d92e26f88f56
Publikováno v:
Reports on Mathematical Physics. 88:195-202
In this note we provide a representation of Catalan's constant in terms of a series involving the values at the origin of the even eigenfunctions of the quantum harmonic oscillator .
Publikováno v:
Symmetry
Volume 13
Issue 9
Symmetry, Vol 13, Iss 1561, p 1561 (2021)
Volume 13
Issue 9
Symmetry, Vol 13, Iss 1561, p 1561 (2021)
In this article, we provide an expansion (up to the fourth order of the coupling constant) of the energy of the ground state of the Hamiltonian of a quantum mechanical particle moving inside a parabolic well in the x-direction and constrained by the
Autor:
Jesus Saiz, Emmanuel Lalla, Aurelio Sanz-Arranz, Luis Miguel Nieto, Jesús Medina, Clara Garcia-Prieto, Elena Pascual-Sánchez, Guillermo Lopez-Reyes, Andoni Moral, Marco Veneranda, Fernando Rull, Jose Antonio Manrique, Menelaos Konstantinidis
Publikováno v:
UVaDOC. Repositorio Documental de la Universidad de Valladolid
instname
Journal of Raman Spectroscopy
DIGITAL.INTA Repositorio Digital del Instituto Nacional de Técnica Aeroespacial
instname
Journal of Raman Spectroscopy
DIGITAL.INTA Repositorio Digital del Instituto Nacional de Técnica Aeroespacial
Producción Científica
The Mars2020/Perseverance and ExoMars/Rosalind Franklin rovers are bothslated to return the first Raman spectra ever collected from another planetarysurface, Mars. In order to optimize the rovers scientific outcome, the s
The Mars2020/Perseverance and ExoMars/Rosalind Franklin rovers are bothslated to return the first Raman spectra ever collected from another planetarysurface, Mars. In order to optimize the rovers scientific outcome, the s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5bd585d3ff7017d3bc3207829fb02fc3
https://hdl.handle.net/20.500.12666/683
https://hdl.handle.net/20.500.12666/683
Publikováno v:
The European Physical Journal Plus. 136
In this paper, we provide a detailed description of the eigenvalue $$ E_{D}(x_0)\le 0$$ (respectively, $$ E_{N}(x_0)\le 0$$ ) of the self-adjoint Hamiltonian operator representing the negative Laplacian on the positive half-line with a Dirichlet (res