Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Villalba, Victor M."'
Autor:
Rojas, Clara, Villalba, Victor M.
The phase-integral approximation devised by Fr\"oman and Fr\"oman, is used for computing cosmological perturbations in the quartic chaotic inflationary model. The phase-integral formulas for the scalar power spectrum are explicitly obtained up to fif
Externí odkaz:
http://arxiv.org/abs/1112.1342
We calculate the tunneling process of a Dirac particle across two square barriers separated a distance $d$, as well as the scattering by a double cusp barrier where the centers of the cusps are separated a distance larger than their screening lengths
Externí odkaz:
http://arxiv.org/abs/1001.4712
Autor:
Rojas, Clara, Villalba, Victor M.
Publikováno v:
Phys.Rev.D79:103502,2009
The phase-integral approximation devised by Fr\"oman and Fr\"oman, is used for computing cosmological perturbations in the quadratic chaotic inflationary model. The phase-integral formulas for the scalar and tensor power spectra are explicitly obtain
Externí odkaz:
http://arxiv.org/abs/0904.4295
Publikováno v:
Eur.Phys.J.C61:519-525,2009
In the present article we show that the energy spectrum of the one-dimensional Dirac equation, in the presence of an attractive vectorial delta potential, exhibits a resonant behavior when one includes an asymptotically spatially vanishing weak elect
Externí odkaz:
http://arxiv.org/abs/0903.2597
Autor:
Rojas, Clara, Villalba, Victor M.
Publikováno v:
Phys.Rev.D75:063518,2007
The phase-integral approximation devised by Fr\"oman and Fr\"oman, is used for computing cosmological perturbations in the power-law inflationary model. The phase-integral formulas for the scalar and tensor power spectra are explicitly obtained up to
Externí odkaz:
http://arxiv.org/abs/astro-ph/0703587
Publikováno v:
Phys.Scripta75:645-650,2007
We solve the two-component Dirac equation in the presence of a spatially one dimensional symmetric attractive cusp potential. The components of the spinor solution are expressed in terms of Whittaker functions. We compute the bound states solutions a
Externí odkaz:
http://arxiv.org/abs/hep-th/0702183
We analyze the role of resonances in two-fermion entanglement production for a quasi one-dimensional two channel scattering problem. We solve exactly for the problem of a two-fermion antisymmetric product state scattering off a double delta well pote
Externí odkaz:
http://arxiv.org/abs/quant-ph/0611210
Autor:
Villalba, Victor M., Rojas, Clara
Publikováno v:
Phys.Lett.A362:21-25,2007
We solve the Klein-Gordon equation in the presence of a spatially one-dimensional cusp potential. The scattering solutions are obtained in terms of Whittaker functions and the condition for the existence of transmission resonances is derived. We show
Externí odkaz:
http://arxiv.org/abs/hep-th/0610083
Publikováno v:
Phys.Lett. A352 (2006) 202-205
We show that the energy spectrum of the one-dimensional Dirac equation in the presence of a spatial confining point interaction exhibits a resonant behavior when one includes a weak electric field. After solving the Dirac equation in terms of parabol
Externí odkaz:
http://arxiv.org/abs/hep-th/0512073
Autor:
Villalba, Victor M., Rojas, Clara
Publikováno v:
Int.J.Mod.Phys. A21 (2006) 313-326
We solve the Klein-Gordon equation in the presence of a spatially one-dimensional cusp potential. The bound state solutions are derived and the antiparticle bound state is discussed.
Comment: 13 pages. To appear in International Journal of Moder
Comment: 13 pages. To appear in International Journal of Moder
Externí odkaz:
http://arxiv.org/abs/hep-th/0508040