Ten themes of viscous liquid dynamics
Creators
- 1. DNRF Centre 'Glass and Time', IMFUFA Building 27, Department of Sciences, Roskilde University, Postbox 260, DK-4000 Roskilde (Denmark)
Description
Ten 'themes' of viscous liquid physics are discussed with a focus on how they point to a general description of equilibrium viscous liquid dynamics (i.e., fluctuations) at a given temperature. This description is based on standard time-dependent Ginzburg-Landau equations for the density fields, stress tensor fields, potential energy density field, and fields quantifying molecular orientations. One characteristic aspect of the theory is that density has the appearance of a non-conserved field. Another characteristic feature is the long-wavelength dominance of the dynamics, which not only simplifies the theory by allowing for an ultra-local Hamiltonian (free energy), but also explains the observed general independence of chemistry. Whereas there are no long-ranged static (i.e., equal-time) correlations in the model, there are important long-ranged dynamic correlations on the alpha timescale
Additional details
Identifiers
- DOI
- 10.1088/0953-8984/19/20/205105;
- PII
- S0953-8984(07)33852-6;
Publishing Information
- Journal Title
- Journal of Physics. Condensed Matter
- Journal Volume
- 19
- Journal Issue
- 20
- Journal Page Range
- p. 205105
- ISSN
- 0953-8984
- CODEN
- JCOMEL
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 38077852
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- CORRELATIONS; DENSITY; FLUCTUATIONS; FREE ENERGY; GINZBURG-LANDAU THEORY; HAMILTONIANS; LIQUIDS; PHASE STABILITY; PHASE STUDIES; POTENTIAL ENERGY; STRESSES; TEMPERATURE DEPENDENCE; TENSOR FIELDS; TIME DEPENDENCE; VISCOSITY; WAVELENGTHS
- Descriptors DEC
- ENERGY; FLUIDS; MATHEMATICAL OPERATORS; PHYSICAL PROPERTIES; QUANTUM OPERATORS; STABILITY; THERMODYNAMIC PROPERTIES; VARIATIONS