Nuclear Schiff moment and soft vibrational modes

Journal Article · Tue Jul 15 04:00:00 EDT 2008 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.78.014310· OSTI ID:21192027

Zelevinsky, Vladimir ^[1]; Volya, Alexander ^[2]; Auerbach, Naftali ^[1]

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1. Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824-1321 (United States)
2. Department of Physics, Florida State University, Tallahassee, Florida 32306-4350 (United States)

The atomic electric dipole moment (EDM) currently searched by a number of experimental groups requires that both parity and time-reversal invariance be violated. According to current theoretical understanding, the EDM is induced by the nuclear Schiff moment. The enhancement of the Schiff moment by the combination of static quadrupole and octupole deformation was predicted earlier. Here we study a further idea of the possible enhancement in the absence of static deformation but in a nuclear system with soft collective vibrations of two types. Both analytical approximation and numerical solution of the simplified problem confirm the presence of the enhancement. We discuss related aspects of nuclear structure which should be studied beyond mean-field and random phase approximations.

• OSTI ID: 21192027
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 1 Vol. 78; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CURRENTS
DEFORMATION
ELECTRIC DIPOLE MOMENTS
MEAN-FIELD THEORY
NUCLEAR STRUCTURE
NUMERICAL SOLUTION
OCTUPOLES
PARITY
QUADRUPOLES
RANDOM PHASE APPROXIMATION
T INVARIANCE