Issue
EPL
Volume 82, Number 3, May 2008
Article Number 34003
Number of page(s) 5
Section Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics
DOI http://dx.doi.org/10.1209/0295-5075/82/34003
Published online 21 April 2008
EPL, 82 (2008) 34003
DOI: 10.1209/0295-5075/82/34003

Analogy between capillary motion and Friedmann-Robertson-Walker cosmology

D. Bini1, 2 and S. Succi1

1  Istituto per le Applicazioni del Calcolo "M. Picone", CNR - I-00161 Rome, Italy, EU
2  ICRA, University of Rome "La Sapienza" - I-00185 Rome, Italy, EU

binid@icra.it

received 14 December 2007; accepted in final form 5 March 2008; published May 2008
published online 21 April 2008

Abstract
A formal equivalence between the motion of an inviscid fluid in a capillary tube and the Friedmann-Robertson-Walker cosmological equations is discussed. Similarly to the case of "sonic black holes" or "black-hole analogs", largely discussed in the recent literature, it is hoped that this analogy may inspire a class of capillary-filling experiments reproducing simple cosmological scenarios in terrestrial laboratories.

PACS
47.35.Pq - Capillary waves.
98.80.-k - Cosmology.

© EPLA 2008