Model-dependent axion as quintessence with almost massless hidden sector quarks | Zendy

Jihn E. Kim | Zendy

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Model-dependent axion as quintessence with almost massless hidden sector quarks

Author(s) -

Jihn E. Kim

Publication year - 2000

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2000/06/016

Subject(s) - quintessence , axion , physics , particle physics , hidden sector , massless particle , quark , goldstone boson , quantum chromodynamics , instanton , strong cp problem , higgs boson , boson , dark matter , dark energy , quantum mechanics , cosmology

A pseudo-Goldstone boson for {\it quintessence} is known to require the decayconstant $F_q\sim M_P$ and the height of the potential $(0.003 {\rm eV})^4$,and hence the pseudo-Goldstone boson mass of order $10^{-33}$ eV. Themodel-dependent axion in some superstring models is suggested as a goodcandidate for the quintessence. We realize this idea with a hidden-sector gaugegroup $SU(3)_H\times U(1)_H$. The hidden-sector instanton contribution to thequintessence potential is suppressed by the almost massless hidden-sectorquarks. The model-independent axion is the QCD axion required for the strong CPsolution.Comment: LaTex file of 11 page

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