Zobrazeno 1 - 10
of 66
pro vyhledávání: '"P. G. H. Sandars"'
Publikováno v:
Physics Today. 56:33-39
Small-scale experiments sensitive to tiny effects could offer profound insights into what lies beyond the standard model of elementary particles.
Autor:
P. G. H. Sandars
Publikováno v:
Origins of Life and Evolution of the Biosphere. 33:575-587
This article examines a toy model of polymerization which though artificial and unphysical has some interesting chiral features. Two key elements, enantiomeric cross inhibition and chiral feedback, are shown to lead to bifurcation, so that the end pr
Autor:
P G H Sandars
Publikováno v:
Contemporary Physics. 42:97-111
The existence of an electric dipole moment (edm) on a fundamental atomic particle would imply violation of both parity and time-reversal invariance. An edm on a neutral particle is detectable through its interaction with an applied electric field. Th
Autor:
P G H Sandars, J James
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 32:3295-3307
A parametric approach to the effects of finite nuclear size in atomic parity nonconservation (PNC) is developed. Rose's integral form of the electronic wavefunction is used to obtain a complete (Z)2 expression for atomic PNC with an arbitrary nucleus
Autor:
P G H Sandars, D Bruss
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 30:5925-5938
We calculate the time dependence of the T-violating term in the stimulated Raman transition which was discussed for short times in earlier papers. We study a double -system and use numerical methods to find explicit results for caesium. The two stimu
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 30:2495-2504
In a previous paper we pointed out the existence of an interesting time-reversal odd, parity-even (TO, PE) term in the transition probability for the stimulated Raman effect. This term is proportional to where and are the polarizations of the Raman b
Autor:
E C Stephens, P G H Sandars
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 29:5597-5606
We put forward a new optical experiment which is sensitive to atomic T-violation, not accompanied by parity non-conservation. Our proposal is a polarization dependence of the form in the off-resonance stimulated Raman effect using two plane-polarized
Autor:
P G H Sandars
Publikováno v:
Physica Scripta. :16-21
The three possible types of atomic symmetry breaking, P not T, P and T and T not P, are reviewed in a unified way. A convenient two by two matrix format is used in the discussion. The current state of atomic theory and experiment is reviewed and the
Publikováno v:
Europhysics Letters (EPL). 15:731-736
Parity-violating optical rotation induced by the neutral weak-current interaction has been detected and measured for the first time in atomic thallium vapour. Accurate atomic calculations predicting the size of the rotation are available for this ele
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 24:2877-2882
In a previous paper (Boston et al., 1990) the authors discussed how P- not T-violating electron-nucleon forces give rise to static local multipole moments. The lowest of these is the rank 1 anapole moment. They now show that a self charge-conjugate s