161 citations · 533 across the 23 of their papers we have counts for
9 papers · 1 filter
Healing Length and Bubble Formation in DNA
Z. Rapti, A. Smerzi, K. O. Rasmussen +3
We have recently suggested that the probability for the formation of thermally activated DNA bubbles is, to a very good approximation, proportional to the number of soft AT pairs o…
Lengthscales and Cooperativity in DNA Bubble Formation
Z. Rapti, A. Smerzi, K. Ø. Rasmussen +1
It appears that thermally activated DNA bubbles of different sizes play central roles in important genetic processes. Here we show that the probability for the formation of such bu…
Modulational Instabilities and Domain Walls in Coupled Discrete Nonlinear Schrödinger Equations
Z. Rapti, A. Trombettoni, P. G. Kevrekidis +3
We consider a system of two discrete nonlinear Schrödinger equations, coupled by nonlinear and linear terms. For various physically relevant cases, we derive a modulational instabi…
Modulational Instability in Bose-Einstein Condensates under Feshbach Resonance Management
Z. Rapti, G. Theocharis, P. G. Kevrekidis +1
We investigate the modulational instability of nonlinear Schr{ö}dinger equations with periodic variation of their coefficients. In particular, we focus on the case of the recently…
On the modulational stability of Gross-Pitaevskii type equations in 1+1 dimensions
G. Theocharis, Z. Rapti, P. G. Kevrekidis +2
The modulational stability of the nonlinear Schr{ö}dinger (NLS) equation is examined in the case with a quadratic external potential. This study is motivated by recent experimental…
Variational Approach to the Modulational Instability
Z. Rapti, P. G. Kevrekidis, A. Smerzi +1
We study the modulational stability of the nonlinear Schrödinger equation (NLS) using a time-dependent variational approach. Within this framework, we derive ordinary differential…