Volume 98, Number 6, June 2012
|Number of page(s)||5|
|Published online||20 June 2012|
Planck-scale effects on Bose-Einstein condensates
Escuela de Física, Universidad Industrial de Santander - Ciudad Universitaria, Bucaramanga 680002, Colombia
2 Istituto Nazionale di Alta Matematica Francesco Severi, Gruppo Nazionale di Fisica Matematica Piazzale Aldo Moro 5, 00185, Rome, Italy, EU
3 Facultad de Ciencias, Universidad Nacional Autónoma de México - 04510 México, DF, Mexico
4 Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México 04510 México, DF, Mexico
Accepted: 23 May 2012
The effects of a Planck-scale deformation of the Minkowski energy-momentum dispersion relation on the phenomenology of non-trapped Bose-Einstein condensates (BECs) are examined. Such a deformation is shown to cause a shift in the condensation temperature Tc of the BEC and, for a specific functional form of deformation, this shift can be as large as the current measured precision on Tc. For a 3785Rb cold-atom BEC with a particle density n≃1012cm−3 we find a fractional shift of order 10−4, but this can be much larger for even more dilute BECs. We discuss the possibility of planning specific experiments with BECs that might provide phenomenological constraints on Planck-scale physics. These corrections to Tc are found to be extremely small for ultrarelativistic BECs implying that, in some cases, Planck-scale effects may be more important in low- rather than high-energy processes.
PACS: 04.60.-m – Quantum gravity / 04.60.Bc – Phenomenology of quantum gravity / 04.90.+e – Other topics in general relativity and gravitation (restricted to new topics in section 04)
© EPLA, 2012
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