7,004 research outputs found
Implications of phase transitions in the early universe
Imperial Users onl
Manipulating a single adsorbed DNA for a critical endpoint
We show the existence of a critical endpoint in the phase diagram of
unzipping of an adsorbed double-stranded (ds) polymer like DNA. The competition
of base pairing, adsorption and stretching by an external force leads to the
critical end point. From exact results, the location of the critical end point
is determined and its classical nature established.Comment: 6 pages, 5 figures, Published versio
A Measure of data-collapse for scaling
Data-collapse is a way of establishing scaling and extracting associated
exponents in problems showing self-similar or self-affine characteristics as
e.g. in equilibrium or non-equilibrium phase transitions, in critical phases,
in dynamics of complex systems and many others. We propose a measure to
quantify the nature of data collapse. Via a minimization of this measure, the
exponents and their error-bars can be obtained. The procedure is illustrated by
considering finite-size-scaling near phase transitions and quite strikingly
recovering the exact exponents.Comment: 3 pages, revtex, 3 figures,2 in colour. Replaced by the proper
version - slightly longer and no mismatch of abstrac
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