8 citations · 8 across the 9 of their papers we have counts for
9 papers
Dark energy and negative compressibility of the Universe: A study based on cosmic equations of state
Felipe A. Asenjo, Ósmar Rodríguez, Ariel Órdenes Morales +1
All cosmological models are defined through energy and matter, which describe the evolution of the targeted Universe. Whether the content is simple or complex, it can be defined th…
Reconnection of Gravitational Fields
Luca Comisso, Felipe A. Asenjo
In a tetrad formulation of general relativity, an ideal Ohm-type condition for the gravitational field implies the conservation of gravitational fluxes and the preservation of the…
Frozen-In Gravitational Fields
Felipe A. Asenjo, Maricarmen A. Winkler, Luca Comisso
Spacetime can undergo complex nonlinear evolution, as governed by the Einstein field equations, and a central challenge is to understand the geometric structures that arise, persis…
First Principles Magnetohydrodynamical Theory for the Expanding Box Model: Effects on Expansion-Induced Alfvén Wave Reflection
Sebastián Saldivia, Nicolás Villarroel-Sepúlveda, Sebastián Echeverría-Veas +2
The Expanding Box Model (EBM) has been widely employed to simulate multiscale plasma phenomena in the expanding solar wind by transforming the MHD equations to a co-moving, non-ine…
Non-thermal plasma density redistribution in planetary magnetospheres due to ion-cyclotron waves
Joaquín Espinoza-Troni, Felipe A Asenjo, Pablo S Moya
Planetary magnetospheres exhibit diverse environments where Ultra-low frequency (ULF) pulsations induce nonlinear ponderomotive effects. Since suprathermal populations modeled by K…
Dispersive Properties of MHD Waves in the Expanding Solar Wind for a Parker Spiral Geometry
Sebastián Saldivia, Felipe Asenjo, Pablo S. Moya
In this work, we quantify the effects of solar wind expansion on the dispersive properties of the three normal modes of ideal MHD using the Expanding Box Model, under a background…
Laser-Driven Annular Shock Waves as Laboratory Analogues of CDM Cosmologies and Cosmological Gravitational Waves
Felipe A. Asenjo, Felipe Veloso, Julio C. Valenzuela
We demonstrate that the experimental evolution of an annular, laser-driven plasma shock wave, expanding over time and undergoing self-interaction gives rise to multiple shock struc…
Electromagnetic plasma waves in Big Bounce and Big Crunch cosmologies
Felipe A. Asenjo
We study the exact dynamics of electromagnetic waves in cold electron-positron plasma in the simplest background of Big Bounce and Big Crunch cosmologies. We show that these waves…
Ponderomotive forces in unmagnetized plasmas described by Kappa distribution functions
Joaquín Espinoza-Troni, Felipe A Asenjo, Pablo S Moya
The Washimi and Karpman ponderomotive interaction due to electromagnetic waves propagation is investigated for unmagnetized plasmas described by a isotropic Kappa distribution. We…