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Spin clocks: Probing fundamental symmetries in nature
Author(s) -
Heil Werner,
Gemmel Claudia,
Karpuk Sergei,
Sobolev Yuri,
Tullney Kathlynne,
Allmendinger Fabian,
Schmidt Ulrich,
Burghoff Martin,
Kilian Wolfgang,
KnappeGrüneberg Silvia,
Schnabel Allard,
Seifert Frank,
Trahms Lutz
Publication year - 2013
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/andp.201300048
Subject(s) - physics , larmor precession , zeeman effect , spins , spin (aerodynamics) , sidereal time , coherence (philosophical gambling strategy) , precession , dipole , atomic physics , quantum mechanics , condensed matter physics , magnetic field , astrophysics , thermodynamics
The detection of the free precession of co‐located 3 He/ 129 Xe nuclear spins (clock comparison) is used as ultra‐sensitive probe for non‐magnetic spin interactions, since the magnetic dipole interaction (Zeeman‐term) drops out in the weighted frequency difference, i.e., Δω = ω He ‐ γ He /γ Xe ·ω Xe of the respective Larmor frequencies. Recent results are reported on searches for (i) short‐range P‐ and T‐violating interactions between nucleons, and (ii) Lorentz violating signatures by monitoring the Larmor frequencies as the laboratory reference frame rotates with respect to distant stars (sidereal modulation). Finally, a new experimental initiative to search for an electric dipole moment of 129 Xe (CP‐violation) is discussed, which strongly benefits from the long spin‐coherence times obtained, reaching T 2 , H e * > 100 h and T 2 , X e * > 8 h in case of 3 He and 129 Xe, respectively.