77 citations · 206 across the 4 of their papers we have counts for
4 papers
A Generalized Theory of Varying Alpha
John D. Barrow, Sean Z. W. Lip
In this paper, we formulate a generalization of the simple Bekenstein-Sandvik-Barrow-Magueijo (BSBM) theory of varying alpha by allowing the coupling constant, ω, for the correspon…
A Fast Algorithm for the Discrete Core/Periphery Bipartitioning Problem
Sean Z. W. Lip
Various methods have been proposed in the literature to determine an optimal partitioning of the set of actors in a network into core and periphery subsets. However, these methods…
Interacting Cosmological Fluids and the Coincidence Problem
Sean Z. W. Lip
We examine the evolution of a universe comprising two interacting fluids, which interact via a term proportional to the product of their densities. In the case of two matter fluids…
Classical Stability of Sudden and Big Rip Singularities
John D. Barrow, Sean Z. W. Lip
We introduce a general characterization of sudden cosmological singularities and investigate the classical stability of homogeneous and isotropic cosmological solutions of all curv…