Spin clocks: Probing fundamental symmetries in nature

被引：43

作者：

Heil, Werner ^{[1
]}

Gemmel, Claudia ^{[1
]}

Karpuk, Sergei ^{[1
]}

Sobolev, Yuri ^{[1
]}

Tullney, Kathlynne ^{[1
]}

Allmendinger, Fabian ^{[2
]}

Schmidt, Ulrich ^{[2
]}

Burghoff, Martin ^{[3
]}

Kilian, Wolfgang ^{[3
]}

Knappe-Grueneberg, Silvia ^{[3
]}

Schnabel, Allard ^{[3
]}

Seifert, Frank ^{[3
]}

Trahms, Lutz ^{[3
]}

机构：

[1] Johannes Gutenberg Univ Mainz, D-55122 Mainz, Germany

[2] Heidelberg Univ, D-69115 Heidelberg, Germany

[3] Phys Tech Bundesanstalt, Berlin, Germany

来源：

ANNALEN DER PHYSIK | 2013年 / 525卷 / 8-9期

关键词：

LOCAL LORENTZ INVARIANCE; ELECTRIC-DIPOLE MOMENT; POLARIZED HE-3; PARAMAGNETIC RELAXATION; SPATIAL ANISOTROPY; INERTIAL MASS; CP VIOLATION; SEARCH; LIMITS;

D O I：

10.1002/andp.201300048

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The detection of the free precession of co-located He-3/Xe-129 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., Delta omega = omega(He)-gamma(He)/gamma(Xe)omega(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 Xe-129 (CP-violation) is discussed, which strongly benefits from the long spin-coherence times obtained, reaching T*(2,He) > 100 h and T*(2,Xe) > 8 h in case of He-3 and Xe-129, respectively.

引用

页码：539 / 549

页数：11

共 29 条

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