GAUGE: the GrAnd Unification and Gravity Explorer

Adrian Cruise

Research output: Contribution to journalArticle

19 Citations (Scopus)


The GAUGE (GrAnd Unification and Gravity Explorer) mission proposes to use a drag-free spacecraft platform onto which a number of experiments are attached. They are designed to address a number of key issues at the interface between gravity and unification with the other forces of nature. The equivalence principle is to be probed with both a high-precision test using classical macroscopic test bodies, and, to lower precision, using microscopic test bodies via cold-atom interferometry. These two equivalence principle tests will explore string-dilaton theories and the effect of space-time fluctuations respectively. The macroscopic test bodies will also be used for intermediate-range inverse-square law and an axion-like spin-coupling search. The microscopic test bodies offer the prospect of extending the range of tests to also include short-range inverse-square law and spin-coupling measurements as well as looking for evidence of quantum decoherence due to space-time fluctuations at the Planck scale.
Original languageEnglish
Pages (from-to)549-572
Number of pages24
JournalExperimental Astronomy
Issue number2
Early online date12 Jun 2008
Publication statusPublished - 1 Mar 2009


  • Mass-spin coupling
  • Space mission
  • Fundamental physics
  • Atom interferometry
  • Equivalence principle


Dive into the research topics of 'GAUGE: the GrAnd Unification and Gravity Explorer'. Together they form a unique fingerprint.

Cite this