In:
Modern Physics Letters A, World Scientific Pub Co Pte Ltd, Vol. 35, No. 15 ( 2020-05-20), p. 2050117-
Abstract:
We suggest that the pseudo-scalar vacuum (PSV) field in the dark matter (DM) sector of the Universe may be as important as the electromagnetic vacuum field in the baryonic sector. In particular, the spin–spin interaction between the DM fermions, mediated by PSV, may represent the strongest interaction between the DM fermions due to the absence of the electric charge and the magnetic dipole moment. Based on this assumption, we consider the influence of the spin–spin interaction, mediated by PSV, on the spin precession of the DM fermions (e.g. neutralino). In the secular approximation, we obtain the exact expression describing the frequency of the precession and estimate the decoherence rate.
Type of Medium:
Online Resource
ISSN:
0217-7323
,
1793-6632
DOI:
10.1142/S0217732320501175
Language:
English
Publisher:
World Scientific Pub Co Pte Ltd
Publication Date:
2020
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