Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Giant dynamic isotope effect in supercooled water   Light and heavy water show similar anomalies in thermodynamic and dynamic
properties. While a simple temperature shift apparently helps in collapsing
data for both isotopes, it lacks a clear justification and requires additional
ad hoc scaling factors. Here we report shear viscosity data $\eta$ for heavy
water supercooled down to $244\,\mathrm{K}$, together with data for light water
with improved accuracy. The isotopic effect on viscosity is extreme for water,
with a viscosity ratio exceeding 2.2 at $244\,\mathrm{K}$. As temperature $T$
decreases, $\eta$ and self-diffusion $D_\mathrm{s}$ decouple, as manifested by
an increasing Stokes-Einstein ratio $D_\mathrm{s} \eta/T$. The Stokes-Einstein
ratios for the two isotopes are reconciled by a $+7\,\mathrm{K}$ shift of the
light water data, without the need for a scaling factor. Our results are
consistent with simulations and suggest that this isotopic temperature shift
mirrors that of water's thermodynamic and structural anomalies in the
supercooled region, possibly related to the existence of a liquid-liquid
transition.

2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
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The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
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The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
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The categories of this paper are: adap-org
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
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The categories of this paper are: stat
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The categories of this paper are: q-fin
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The categories of this paper are: econ
0
The categories of this paper are: hep-ph