Physics
Critical dynamics of the dirty boson problem: Revisiting the equality z=d
Document Type
Article
Abstract
It is shown that previous arguments, leading to the equality z=d for the dynamical exponent describing the Bose glass to superfluid transition in d dimensions, may break down, as apparently seen in recent simulations. The key observation is that the major contribution to the compressibility, which remains finite through the transition and was predicted to scale as κ∼|δ|(d-z)ν (where δ is the deviation from criticality and ν is the correlation length exponent) comes from the analytic, not the singular part of the free energy, and is not restricted by any conventional scaling hypothesis. © 2007 The American Physical Society.
Publication Title
Physical Review Letters
Publication Date
6-12-2007
Volume
98
Issue
24
ISSN
0031-9007
DOI
10.1103/PhysRevLett.98.245701
Keywords
free energy, molecular dynamics, phase transitions, superfluid helium
Repository Citation
Weichman, Peter B. and Mukhopadhyay, Ranjan, "Critical dynamics of the dirty boson problem: Revisiting the equality z=d" (2007). Physics. 163.
https://commons.clarku.edu/faculty_physics/163
