8 papers
Wave Kinetics and Thermalization in Kadomtsev-Petviashvili-I System
Kiran Venkata Kolluru, Giorgio Krstulovic, Alan C Newell +1
We study properties of solutions, both evolving and equilibrium of the wave-kinetic equation describing ensembles of weak random waves governed by the Kadomstev-Petviashivli-I equa…
Universal self-similar evolution of two-dimensional acoustic turbulence in Bose-Einstein condensates
Guillaume Costa, Sergey Nazarenko, Giorgio Krstulovic
When driven out of equilibrium, a Bose-Einstein condensate develops nonlinearly interacting density waves that trigger a turbulent cascade, transferring energy toward small scales.…
Cascades in the Kinetic Equation for the Majda-McLaughlin-Tabak model
Gregorio Tibone, Giorgio Krstulovic, Miguel Onorato
The Majda-McLaughlin-Tabak (MMT) family of models has proven to be an efficient ground for benchmarking wave turbulence theory, thanks to the low computational cost required to tes…
Turbulence and far-from-equilibrium equation of state of Bogoliubov waves in Bose-Einstein Condensates
Ying Zhu, Giorgio Krstulovic, Sergey Nazarenko
Bogoliubov waves are fundamental excitations of Bose-Einstein Condensates (BECs). They emerge from a perturbed ground state and interact nonlinearly, triggering turbulent cascades.…
Strong and weak wave turbulence regimes in Bose-Einstein condensates
Ying Zhu, Giorgio Krstulovic, Sergey Nazarenko
When a turbulent Bose-Einstein condensate is driven out-of-equilibrium at a scale much smaller than the system size, nonlinear wave interactions transfer particles towards large sc…
Stability of stationary solutions in Acoustic wave turbulence
Guillaume Costa, Giorgio Krstulovic, Sergey Nazarenko
We study the stability of steady-state solutions of the Wave-Kinetic Equations for acoustic waves. Combining theoretical analysis and numerical simulations, we characterise the tim…