|
|
|
|
[
PHYSICS GRADUATE FELLOWSHIPS AT THE IFM
]
[
BECAS DE POSGRADO EN EL IFM
]
[Event:
International Workshop of Analysis and Applications]
[Event:
XII Mexican Workshop on Particles and Fields
]
[
Resultado de la evaluación al control interno y proceso administrativo
]
Outstanding result of the month (October 2009)
Life time of wormholes can be extended if electric charge is added.
In previous studies
[Class. Quantum Grav. 26 (2009) 015010,
Class. Quantum Grav. 26 (2009) 015011],
González,
Guzmán and
Sarbach, members of the
IFM showed that standard Wormholes supported by a ghost scalar field are unstable, both,
based on the analysis of perturbations and in the non-linear regime using numerical
relativity. They established that the time scale associated to the collapse into a black hole
is of the order of the throat's areal radius divided by the speed of light, which is of the
order of a few microseconds for a throat with areal radius of one
kilometer. In their more recent paper [Phys.
Rev. D 80, 024023 (2009)], our three members show that Wormhole solutions with
electrictromagnetic charge are also unstable in the regime allowed for the study (a mixture
of perturbation analysis and numerical methods), however the time scale
for the collapse can be increased by a factor of 100 (!).
|
[Noticias y resultados
relevantes de meses anteriores]
|
|
Instituto de Física y Matemáticas,
Universidad Michoacana de San Nicolás de Hidalgo. Edificio C-3, Cd. Universitaria.
C. P. 58040 Morelia, Michoacán, México.
Teléfonos: +52 (443) 322 3500, ext. 4140
--> Directorio del IFM
|
|