Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Instability and front propagation in laser-tweezed lipid bilayer tubules   We study the mechanism of the `pearling' instability seen recently in
experiments on lipid tubules under a local applied laser intensity. We argue
that the correct boundary conditions are fixed chemical potentials, or surface
tensions \Sigma, at the laser spot and the reservoir in contact with the
tubule. We support this with a microscopic picture which includes the intensity
profile of the laser beam, and show how this leads to a steady-state flow of
lipid along the surface and gradients in the local lipid concentration and
surface tension (or chemical potential). This leads to a natural explanation
for front propagation and makes several predictions based on the tubule length.
While most of the qualitative conclusions of previous studies remain the same,
the `ramped' control parameter (surface tension) implies several new
qualitative results. We also explore some of the consequences of front
propagation into a noisy (due to pre-existing thermal fluctuations) unstable
medium.

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The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys