Europhys. Lett.
Volume 74, Number 6, June 2006
Page(s) 978 - 984
Section The physics of elementary particles and fields
Published online 26 May 2006
Europhys. Lett., 74 (6), pp. 978-984 (2006)
DOI: 10.1209/epl/i2006-10063-3

Gravitoelectromagnetically induced transitions in charged boson nebulae

M. A. Dariescu, C. Dariescu and G. Murariu

Department of Solid State and Theoretical Physics, Faculty of Physics "Al. I. Cuza" University - Bd. Carol I no. 11, 700506 Iasi, Romania

received 1 March 2006; accepted 26 April 2006
published online 26 May 2006

We derive approximating analytical solutions to the system of Klein-Gordon-Maxwell-Einstein equations, describing a minimally coupled charged boson to a spherically symmetric spacetime. Within a first-order perturbative approach, we generalize some previous results and write down the effective potential and the current, for the non-vanishing radial-momentum case. These can be actually employed in computing quantum transitions, such as the ones related to gravitoelectric particle creation. It can be noticed that the non-vanishing radial wave number affects both the effective potential, by a gravity-based dipole contribution, and the current. These lead to serious consequences regarding the actual dispersion, the continuity equation and the growth, and respectively decay, of the quantum mode-excitations.

11.27.+d - Extended classical solutions; cosmic strings, domain walls, texture.
04.40.Nr - Einstein-Maxwell spacetimes, spacetimes with fluids, radiation or classical fields.
04.20.Jb - Exact solutions.

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