28 citations · 40 across the 3 of their papers we have counts for
3 papers
Velocity fluctuations of population fronts propagating into metastable states
Baruch Meerson, Pavel V. Sasorov, Yitzhak Kaplan
The position of propagating population fronts fluctuates because of the discreteness of the individuals and stochastic character of processes of birth, death and migration. Here we…
Fermi Edge Resonances in Non-equilibrium States of Fermi Gases
E. Bettelheim, Y. Kaplan, P. Wiegmann
We formulate the problem of the Fermi Edge Singularity in non-equilibrium states of a Fermi gas as a matrix Riemann-Hilbert problem with an integrable kernel. This formulation is t…
Gradient Catastrophe and Fermi Edge Resonances in Fermi Gas
Eldad Bettelheim, Yitzhak Kaplan, Paul B. Wiegmann
A smooth spatial disturbance of the Fermi surface in a Fermi gas inevitably becomes sharp. This phenomenon, called {\it the gradient catastrophe}, causes the breakdown of a Fermi s…