Europhys. Lett.
Volume 63, Number 5, September 2003
Page(s) 649 - 652
Section General
Published online 01 November 2003
DOI: 10.1209/epl/i2003-00577-6
Europhys. Lett., 63 (5) , pp. 649-652 (2003)

Superfluids in non-Riemannian spacetime background

L. C. Garcia de Andrade

Departamento de Física Teórica, Instituto de Física, UERJ Rua São Fco. Xavier 524, Rio de Janeiro, RJ Maracanã, CEP:20550-003, Brasil

(Received 6 May 2003; accepted 20 June 2003)

The Gross-Pitaevski (GP) equation describing helium superfluids (Bose-Einstein condensate) is extended to non-Riemannian spacetime background where torsion is shown to induce the splitting in the potential energy of the flow. A cylindrically symmetric solution for Minkowski background with constant torsion is obtained, which shows that torsion induces a damping in the superfluid flow velocity. Since the exponential damping is a pure torsion effect, it is suggested that this effect could be used on a superfluid experiment to detect torsion.

04.20.-q - Classical general relativity.
04.50.+h - Gravity in more than four dimensions, Kaluza-Klein theory, unified field theories; alternative theories of gravity.

© EDP Sciences 2003