Axion and Almost Massless Quark as Ingredients of Quintessence

Details Axion and Almost Massless Quark as Ingredients of Quintessence Axion and Almost Massless Quark as Ingredients of Quintessence

1998-11-30

arxiv.org/abs/hep-ph/9811509v3

JHEP 9905:022,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex file of 7 pages

Scientific paper

10.1088/1126-6708/1999/05/022

It is pointed out that a natural introduction of quintessence is an axion with an almost massless quark. With an appropriate gauge or discrete symmetry, one can obtain the quintessence potential height of order $(0.003 eV)^4$. Even though the QCD axion with almost massless up quark is a possibility, we stress the almost massless quark in the hidden sector together with the QCD axion toward the quintessence.

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