C Bambi and F R Urban 2008 Class. Quantum Grav. 25 095006 doi:10.1088/0264-9381/25/9/095006
C Bambi1 and F R Urban2,3,4
Show affiliationsWe discuss a gedanken experiment for the simultaneous measurement of the position and momentum of a particle in de Sitter spacetime. We propose an extension of the so-called generalized uncertainty principle (GUP) which implies the existence of a minimum observable momentum. The new GUP is directly connected to the nonzero cosmological constant, which becomes a necessary ingredient for a more complete picture of the quantum spacetime.
83C75 Space-time singularities, cosmic censorship, etc.
Issue 9 (7 May 2008)
Received 22 January 2008, in final form 4 March 2008
Published 15 April 2008
C Bambi and F R Urban 2008 Class. Quantum Grav. 25 095006
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