Late time Cosmological Phase Transition and Galactic Halo as Bose-liquid

Details Late time Cosmological Phase Transition and Galactic Halo as Bose-liquid Late time Cosmological Phase Transition and Galactic Halo as Bose-liquid

1992-05-08

arxiv.org/abs/hep-ph/9205208v1

Phys.Rev.D50:3650-3654,1994

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages 3 figs (Top-drawer file will be sent upon request)

Scientific paper

10.1103/PhysRevD.50.3650

We consider the ultra light pseudo Nambu-Goldstone boson appearing in the late time cosmological phase transition theories as a dark matter candidate. Since it is almost massless, its nature is more wave like than particle like. Hence we apply quantum mechanics to study how they form the galactic halos. Three predictions are made; (1)the mass profile $\rho\sim r^{-1.6}$, (2)there are ripple-like fine structures in rotation curve, (3) the rotation velocity times ripple's wave length is largely galaxy independent. We compare the rotation curves predicted by our theory with the data observed.

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