Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Theory of force-extension curve for modular proteins and DNA hairpins   We study a model describing the force-extension curves of modular proteins,
nucleic acids, and other biomolecules made out of several single units or
modules. At a mesoscopic level of description, the configuration of the system
is given by the elongations of each of the units. The system free energy
includes a double-well potential for each unit and an elastic nearest neighbor
interaction between them. Minimizing the free energy yields the system
equilibrium properties whereas its dynamics is given by (overdamped) Langevin
equations for the elongations, in which friction and noise amplitude are
related by the fluctuation-dissipation theorem. Our results, both for the
equilibrium and the dynamical situations, include analytical and numerical
descriptions of the system force-extension curves under force or length
control, and agree very well with actual experiments in biomolecules. Our
conclusions also apply to other physical systems comprising a number of
metastable units, such as storage systems or semiconductor superlattices.

1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
29
The categories of this paper are: funct-an