Dynamical instability of polytropic spheres in spacetimes with a cosmological constant
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.102.024056
Abstract: The dynamical instability of relativistic polytropic spheres, embedded in a spacetime with a repulsive cosmological constant, is studied in the framework of general relativity. We apply the methods used in our preceding paper to study… read more here.
Keywords: dynamical instability; cosmological constant; polytropic spheres; polytropic ... See more keywords
Detecting the dynamical instability of complex time series via partitioned entropy.
Sign Up to like & getrecommendations! Published in 2023 at "Physical review. E"
DOI: 10.1103/physreve.107.014207
Abstract: A method is proposed to detect the dynamical instability of complex time series. We focus on how the partitioned entropy of an initially localized region of the attractor evolves in time and show that its… read more here.
Keywords: complex time; partitioned entropy; dynamical instability; instability complex ... See more keywords
Dynamical Instability of Self-Gravitating Membranes.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.130.011402
Abstract: We show that a generic relativistic membrane with in-plane pressure and surface density having the same sign is unstable with respect to a series of warping mode instabilities with high wave numbers. We also examine… read more here.
Keywords: instability self; self gravitating; dynamical instability; instability ... See more keywords