title: Limiting P-odd interactions of cosmic fields with electrons, protons, and neutrons.
abstract: We propose methods for extracting limits on the strength of P-odd interactions of pseudoscalar and pseudovector cosmic fields with electrons, protons, and neutrons, by exploiting the static and dynamic parity-nonconserving amplitudes and electric dipole moments they induce in atoms. Candidates for such fields are dark matter (including axions) and dark energy, as well as several more exotic sources described by Lorentz-violating standard model extensions. Atomic calculations are performed for H, Li, Na, K, Rb, Cs, Ba(+), Tl, Dy, Fr, and Ra(+). From these calculations and existing measurements in Dy, Cs, and Tl, we constrain the interaction strengths of the parity-violating static pseudovector cosmic field to be 7 × 10(-15) GeV with an electron, and 3 × 10(-8) GeV with a proton.
authors.affiliation: School of Physics, University of New South Wales, Sydney 2052, Australia.
authors.forename: B M
authors.initials: BM
authors.lastname: Roberts
authors.affiliation: School of Physics, University of New South Wales, Sydney 2052, Australia.
authors.forename: Y V
authors.initials: YV
authors.lastname: Stadnik
authors.affiliation: School of Physics, University of New South Wales, Sydney 2052, Australia.
authors.forename: V A
authors.initials: VA
authors.lastname: Dzuba
authors.affiliation: School of Physics, University of New South Wales, Sydney 2052, Australia and New Zealand Institute for Advanced Study, Massey University, Auckland 0745, New Zealand.
authors.forename: V V
authors.initials: VV
authors.lastname: Flambaum
authors.affiliation: Helmholtz Institute Mainz, Johannes Gutenberg University, 55099 Mainz, Germany.
authors.forename: N
authors.initials: N
authors.lastname: Leefer
authors.affiliation: Helmholtz Institute Mainz, Johannes Gutenberg University, 55099 Mainz, Germany and Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300, USA and Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
authors.forename: D
authors.initials: D
authors.lastname: Budker