title: Bulk viscosity universality and scaling function near the binary liquid consolute point.
abstract: The hydrodynamical equations and the notion of a frequency dependent complex specific heat near the critical point of binary liquids are used to obtain an expression for the low-frequency bulk viscosity. In this way the interrelations between different theoretical models, treating the critical sound attenuation from either a specific heat or a bulk viscosity approach, are made evident. The general structure of the bulk viscosity relation agrees with that of Onuki [Phys. Rev. E 55, 403 (1997)] but a universal number emerges only if a normalization to the critical point value is done.
authors.affiliation: S. N. Bose National Center for Basic Sciences, Salt Lake, Kolkata 700098, India.
authors.forename: Jayanta K
authors.initials: JK
authors.lastname: Bhattacharjee
authors.forename: Ireneusz
authors.initials: I
authors.lastname: Iwanowski
authors.forename: Udo
authors.initials: U
authors.lastname: Kaatze