Collisionless and weakly collisional plasmas often exhibit non-thermal quasi-equilibria.
Among these quasi-equilibria, distributions with power-law tails are ubiquitous. It is shown …

Collisionless systems often exhibit nonthermal power-law tails in their distribution functions.
Interestingly, collisionless plasmas in various physical scenarios (eg, the ion population of …

The relaxation of a weakly collisional plasma, which is of fundamental interest to laboratory
astrophysical plasmas, can be described by the self-consistent Boltzmann-Poisson …

These are the notes for my lectures on plasma physics, taught since 2014 as part of the
MMathPhys programme at Oxford. Part I contains the lectures on plasma kinetics that formed …

This paper explores structure formation in two-dimensional magnetohydrodynamic (MHD)
turbulence as a modulational instability (MI) of turbulent fluctuations. We focus on the early …

A tracer sample in a gravitational potential, starting from a generic initial condition, phase-
mixes towards a stationary state. This evolution is accompanied by an entropy increase, and …

The matter power spectrum, $ P (k) $, is one of the fundamental quantities in the study of
large-scale structure in cosmology. Here, we study its small-scale asymptotic limit, and show …

Generic equilibria are derived for turbulent relaxing plasmas via an entropy-maximization
procedure that accounts for the short-time conservation of certain collisionless invariants …

A fundamental tenet of thermodynamics is that chaotic systems will relax to maximum-
entropy states. In plasmas, the chaos is conventionally provided by interparticle collisions …