Volume 106, Number 6, June 2014
|Number of page(s)||6|
|Published online||24 June 2014|
Planck-scale–induced speed of sound in a trapped Bose-Einstein condensate
1 Departamento de Física, Centro de Investigación y Estudios Avanzados del IPN A. P. 14-740, 07000, México D.F., México
2 Departamento de Física, Universidad Autónoma Metropolitana-Iztapalapa A. P. 55-534, 09340 México D.F., México
Received: 14 April 2014
Accepted: 6 June 2014
In the present work, we analyze the corrections caused by an anomalous dispersion relation, suggested in several quantum gravity models, upon the speed of sound in a weakly interacting Bose-Einstein condensate, trapped in a potential of the form . We show that the corresponding ground-state energy and consequently, the associated speed of sound, present corrections with respect to the usual case, which may be used to explore the sensitivity to Planck-scale effects on these relevant properties associated with the condensate. Indeed, we stress that this type of macroscopic bodies may be more sensitive, under certain conditions, to Planck-scale manifestations than its constituents. In addition, we prove that the inclusion of a trapping potential, together with many-body contributions, improves the sensitivity to Planck-scale signals, compared to the homogeneous system.
PACS: 04.60.Bc – Phenomenology of quantum gravity / 04.90.+e – Other topics in general relativity and gravitation (restricted to new topics in section 04) / 05.30.Jp – Boson systems
© EPLA, 2014
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.