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Evolving wormhole geometries
Luis A. Anchordoqui, Diego F. Torres, Marta L. Trobo +1
We present here analytical solutions of General Relativity that describe evolving wormholes with a non-constant redshift function. We show that the matter that threads these wormho…
Gravitational memory of boson stars
Diego F Torres, Andrew R Liddle, Franz E Schunck
`Gravitational memory' refers to the possibility that, in cosmologies with a time-varying gravitational `constant', objects such as black holes may retain a memory of conditions at…
Vacuum static Brans-Dicke wormhole
Luis A. Anchordoqui, A. G. Grunfeld, Diego F. Torres
A simple Lorentzian vacuum wormhole solution of Brans-Dicke gravitation is presented and analysed. It is shown that such solution holds for both, the Brans-Dicke theory endowed wit…
Early Universe Test of Nonextensive Statistics
Diego F. Torres, Héctor Vucetich, A. Plastino
Within an early Universe scenario, nonextensive thermostatistics (NET) is investigated on the basis of data concerning primordial Helium abundance. We obtain first order correction…
Boson Stars in General Scalar-Tensor Gravitation: Equilibrium Configurations
Diego F. Torres
We study equilibrium configurations of boson stars in the framework of general scalar-tensor theories of gravitation. We analyse several possible couplings, with acceptable weak fi…