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 T c of the BEC and, for a specific functional form of deformation, this shift can be as large as the current measured precision on T c. For a 8537Rb cold-atom BEC with a particle density n≃10 12cm -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 T c 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. © 2012 Europhysics Letters Association.
Briscese, F., Grether, M., De Llano, M. (2012). Planck-scale effects on Bose-Einstein condensates. EUROPHYSICS LETTERS, 98(6), 60001 [10.1209/0295-5075/98/60001].
Planck-scale effects on Bose-Einstein condensates
Briscese F.;
2012-01-01
Abstract
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 T c of the BEC and, for a specific functional form of deformation, this shift can be as large as the current measured precision on T c. For a 8537Rb cold-atom BEC with a particle density n≃10 12cm -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 T c 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. © 2012 Europhysics Letters Association.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
