Zobrazeno 1 - 10
of 1 076
pro vyhledávání: '"Recami, E."'
This work deals with exact solutions to the wave equations. We start by introducing the Non-Diffracting Waves (NDW), and by a definition of NDWs. Afterwards we recall -besides ordinary waves (gaussian beams, gaussian pulses)- the simplest non diffrac
Externí odkaz:
http://arxiv.org/abs/1408.6503
Autor:
Olkhovsky, V. S., Recami, E.
Publikováno v:
Int.J.Mod.Phys.A22:5063-5087,2007
Some results are reviewed and developments are presented on the study of Time in quantum mechanics as an observable, canonically conjugate to energy. Operators for the observable Time are investigated in particle and photon quantum theory. In particu
Externí odkaz:
http://arxiv.org/abs/quant-ph/0605069
Publikováno v:
Journal of the Optical Society of America A22 (2005) 2465-2475
In this work, starting by suitable superpositions of equal-frequency Bessel beams, we develop a theoretical and experimental methodology to obtain localized stationary wave fields, with high transverse localization, whose longitudinal intensity patte
Externí odkaz:
http://arxiv.org/abs/physics/0502105
Publikováno v:
Rivista del Nuovo Cimento vol.26, n.4 (2003)
In this paper we examine critically and in detail some existing definitions for the tunnelling times, namely: the phase-time; the centroid-based times; the Buttiker and Landauer times; the Larmor times; the complex (path-integral and Bohm) times; the
Externí odkaz:
http://arxiv.org/abs/quant-ph/0412146
Publikováno v:
Physical Review E65 (2002) 046610
Tunneling of optical pulses at 1.5 micron wavelength through double-barrier periodic fiber Bragg gratings is experimentally investigated. Tunneling time measurements as a function of barrier distance show that, far from the resonances of the structur
Externí odkaz:
http://arxiv.org/abs/physics/0201013
Publikováno v:
Found.Phys.Lett. 7 (1994) 167-179.
We associated, in a classical formulation of "strong gravity", hadron constituents with suitable stationary, axisymmetric solutions of some new Einstein-type equations supposed to describe the strong field inside hadrons. These new equations can be o
Externí odkaz:
http://arxiv.org/abs/math-ph/0105036
Publikováno v:
Il Nuovo Cimento 114B, (1999) 1367
Starting from the knowledge of the four fundamental quantities length L, mass M, time T, absolute temperature $\theta$ and accepting the validity of Gauss's law in all dimensions, we generalize, by the theory of physical dimensions, the expression of
Externí odkaz:
http://arxiv.org/abs/physics/9907008
In this paper we calculate the density profiles of virialized halos both in the case of structure evolving hierarchically from a scale-free Gaussian delta-field having a power spectrum P(k)=A k^n in a Omega=1 Universe and in the case of the CDM model
Externí odkaz:
http://arxiv.org/abs/astro-ph/9906379
Publikováno v:
Found.Phys.Lett. 11 (1998) 103-107
The Dirac equation is solved for two novel terms which describe the interaction energy between the half integral spin of a fermion and the classical, circularly polarized, electromagnetic field. A simple experiment is suggested to test the new terms
Externí odkaz:
http://arxiv.org/abs/physics/9803040
In this note, we first obtain the decomposition of the non-relativistic field velocity into the classical part (i.e., the velocity w=p/m OF the center-of-mass (CM), and the so-called quantum part (i.e., the velocity V of the motion IN the CM frame (n
Externí odkaz:
http://arxiv.org/abs/hep-th/9802106