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pro vyhledávání: '"Julve J"'
The extension of the Dirac Delta distribution (DD) to the complex field is needed for dealing with the complex-energy solutions of the Schr\"odinger equation, typically when calculating their inner products. In quantum scattering theory the DD usuall
Externí odkaz:
http://arxiv.org/abs/1603.05530
The features of the inner products between all the types of real and complex-energy solutions of the Schr\"odinger equation for 1-dimensional cut-off quantum potentials are worked out using a Gaussian regularization. A general Master Solution is intr
Externí odkaz:
http://arxiv.org/abs/1302.0630
Autor:
Julve, J., Tiemblo, A.
Within a gauge formulation of 3+1 gravity relying on a nonlinear realization of the group of isometries of space-time, a natural expansion of the metric tensor arises and a simple choice of the gravity dynamical variables is possible. We show that th
Externí odkaz:
http://arxiv.org/abs/1301.1820
Autor:
Julve, J., Tiemblo, A.
Publikováno v:
Int.J.Geom.Meth.Mod.Phys.8:381-393,2011
Assuming that the natural gauge group of gravity is given by the group of isometries of a given space, for a maximally symmetric space we derive a model in which gravity is essentially a gauge theory of translations. Starting from first principles we
Externí odkaz:
http://arxiv.org/abs/1007.0342
Autor:
Julve, J., de Urries, F. J.
The properties of a prescription for the inner products of the resonance (Gamow states), scattering (Dirac kets), and bound states for 1-dimensional quantum barriers are worked out. The divergent asypmtotic behaviour of the Gamow states is regularize
Externí odkaz:
http://arxiv.org/abs/1002.3051
Autor:
Julve, J., de Urries, F. J.
The time evolution of plane waves in the presence of a 1-dimensional square quantum barrier is considered. Comparison is made between the cases of an infinite and a cut-off (shutter) initial plane wave. The difference is relevant when the results are
Externí odkaz:
http://arxiv.org/abs/0801.1824
Autor:
Julve, J., de Urries, F. J.
We analytically compute the time evolution of an initial infinite plane wave in the presence of a 1-dimensional square quantum barrier. This calculation generalizes the analysis of the shutter problem and sets the basis for the calculation of the tra
Externí odkaz:
http://arxiv.org/abs/quant-ph/0701213
Publikováno v:
J.Phys.A34:8919-8940,2001
As an alternative to the covariant Ostrogradski method, we show that higher-derivative relativistic Lagrangian field theories can be reduced to second differential-order by writing them directly as covariant two-derivative theories involving Lagrange
Externí odkaz:
http://arxiv.org/abs/hep-th/0105301
We introduce a formalism for the calculation of the time of arrival t at a space point for particles traveling through interacting media. We develop a general formulation that employs quantum canonical transformations from the free to the interacting
Externí odkaz:
http://arxiv.org/abs/quant-ph/0002011
Publikováno v:
Phys.Rev. D61 (2000) 062101
We introduce a formalism for the calculation of the time of arrival t at a detector of particles traveling through interacting environments. We develop a general formulation that employs quantum canonical transformations from the free to the interact
Externí odkaz:
http://arxiv.org/abs/quant-ph/9903060