IFIMAR   20926
INSTITUTO DE INVESTIGACIONES FISICAS DE MAR DEL PLATA
Unidad Ejecutora - UE
artículos
Título:
From particles to spins: Eulerian formulation of supercooled liquids and glasses
Autor/es:
CLAUDIO CHAMON, LETICIA F. CUGLIANDOLO, GABRIEL FABRICIUS, JOSÉ LUIS IGUAIN, AND ERIC WEEKS
Revista:
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Referencias:
Año: 2008 vol. 105 p. 15263 - 15268
ISSN:
0027-8424
Resumen:
The dynamics of supercooled liquid and glassy systems are usually
studied within the Lagrangian representation, in which the positions
and velocities of distinguishable interacting particles are followed.
Within this representation, however, it is difficult to define measures
of spatial heterogeneities in the dynamics, as particles move in and
out of any one given region within long enough times. It is also
nontransparent how to make connections between the structural glass and
the spin glass problems within the Lagrangian formulation. We propose
an Eulerian formulation of supercooled liquids and glasses that allows
for a simple connection between particle and spin systems, and that
permits the study of dynamical heterogeneities within a fixed frame of
reference similar to the one used for spin glasses. We apply this
framework to the study of the dynamics of colloidal particle
suspensions for packing fractions corresponding to the supercooled and
glassy regimes, which are probed via confocal microscopy.