dilaton


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dilaton

[′dī·lə‚tän]
(particle physics)
A hypothetical elementary particle having zero mass and zero spin, which is introduced in constructing a scale invariant theory involving massive particles.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Scientists from the BlackHoleCam team in Europe, who are part of the EHTC, have now gone a step further and investigated whether it is possible to distinguish between a "Kerr" black hole from Einstein's gravity and a "dilaton" black hole, which is a possible solution of an alternative theory of gravity.
In the low energy effective action, usually string theory based-models are comprised of two massless scalar fields, the dilaton, and the axion (see, e.g., [1]).
Indeed, it has been shown previously that the higher-dimensional VSI space-time with fluxes and dilaton is solutions of type IIB supergravity [11-13].
with [T.sub.1] the D1-brane tension, G the bulk metric, (for simplicity we set the Kalb-Ramond two form B to be zero), [phi] the dilaton and F the field strength, a; b = [tau],[sigma] and i, j = 1, 2, 3, 4, 5.
Berman, "Energy and angular momentum of dilaton black holes," Revista Mexicana de Astronomia y Astrofisica, vol.
"We have determined that when the Higgs condensate disappeared to make way for the particles that exist today, the equations permitted the existence of a new, massless particle, the dilaton," explained EPFL physicist Daniel Zenhausern.
A little more work (use the string and dilaton equations in [10]) on the numbers <[[tau].sup.u.sub.2][[tau].sup.v.sub.0]> can show that the constant [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] is actually [lambda]-free, as we already know in genus 0 and 1 thanks to Corollary 4, hence the following.
Petropoulos, Ricci flows and expansion in axion dilaton cosmology, arXiv:hep-th/0610281.
Pero, dejando al margen su desafortunada entrada en escena, en la actualidad se la concibe como un parametro que expresa la densidad de energia del vacio, y que debe resultar de la suma de las contribuciones de diversos campos energeticos (el campo electromagnetico, los campos de Higgs asociados con la fuerza debil, el campo inflaton postulado por la cosmologia inflacionaria, el campo dilaton postulado por la teoria de supercuerdas etc.