Nonuniversal critical phenomena along the lambda line of4He
نویسندگان
چکیده
منابع مشابه
Nonuniversal routes to universality: critical phenomena in colloidal dispersions.
We investigate critical phenomena in colloids by means of the renormalization-group based hierarchical reference theory of fluids. We focus on three experimentally relevant model systems: namely, the Asakura-Oosawa model of a colloidal dispersion under the influence of polymer-induced attractive depletion forces; fluids with competing short-range attractive and longer-range repulsive interactio...
متن کاملRenormalization-group Theory and Universality along the Lambda Line Of
The present status of the renormalization-group (RG) predictions on the superfluid density ρ s and the specific heat C + and C − near the λ-line of 4 He is briefly reviewed. Particular attention is given to universal amplitude ratios related to these quantities. The goals of a new theory project are presented that involves higher-order calculations of the amplitude functions of ρ s , C + and C ...
متن کاملBehavior of the Widom line in critical phenomena.
Using linear scaling theory, we study the behavior of response functions extrema in the vicinity of the critical point. We investigate how the speed of convergence of the loci of response function extrema to the Widom line depends on the parameters of the linear scaling theory. We find that when the slope of the coexistence line is near zero, the line of specific heat maxima does not follow the...
متن کاملNonuniversal critical spreading in two dimensions.
Continuous phase transitions are studied in a two dimensional nonequilibrium model with an infinite number of absorbing configurations. Spreading from a localized source is characterized by nonuniversal critical exponents, which vary continuously with the density φ in the surrounding region. The exponent δ changes by more than an order of magnitude, and η changes sign. The location of the criti...
متن کاملComputing Along the Critical Path
Modern processors come close to executing as fast as true dependencies allow. The particular dependencies that constrain execution speed constitute the critical path of execution. To optimize the performance of the processor, we either have to reduce the critical path or execute it more efficiently. In both cases, it can be done more effectively if we know the actual path. This paper describes ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Zeitschrift f�r Physik B Condensed Matter
سال: 1988
ISSN: 0722-3277,1434-6036
DOI: 10.1007/bf01314279