E. A. Paraskevas

activity

20232026

Λ_{s}

CDM model: Implications for bound cosmic structures

31 citations · 55 across the 9 of their papers we have counts for

collaborators

Showing 2026Show all

2 papers · 1 filter

cond-mat.soft2026

The friction-era VOS amplitude of a $Z_{2}$ string network from nematic disclination data

Dimitrios Efstratiou, Evangelos Achilleas Paraskevas, Leandros Perivolaropoulos

A tangle of line defects coarsens as the mean spacing $L$ between neighbouring lines grows. In a viscous medium the motion is overdamped, and the velocity-dependent one-scale (VOS)…

gr-qc2026

Static Dark Fluid Thin Shells in Schwarzschild-de Sitter Spacetimes: Stability and Black Hole Shadows

Dimitrios Efstratiou, Evangelos Achilleas Paraskevas, Leandros Perivolaropoulos

We study the existence and radial stability of static, spherically symmetric thin shells joining two Schwarzschild-de Sitter (SdS) spacetimes $(m_{\pm}, Λ_{\pm})$ . Near the equilibrium…

The friction-era VOS amplitude of a Z2​ string network from nematic disclination data

Static Dark Fluid Thin Shells in Schwarzschild-de Sitter Spacetimes: Stability and Black Hole Shadows

The friction-era VOS amplitude of a $Z_{2}$ string network from nematic disclination data