SEMICLASSICAL GRAVITY AND INVISIBLE AXIONS

Authors
HOLMAN R KEPHART TW REY SJ
Citation
R. Holman et al., SEMICLASSICAL GRAVITY AND INVISIBLE AXIONS, Physical review letters, 71(3), 1993, pp. 320-323
Citations number
24
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
71
Issue
3
Year of publication
1993
Pages
320 - 323
Database
ISI
SICI code
0031-9007(1993)71:3<320:SGAIA>2.0.ZU;2-U
Abstract
We show that charged Eguchi-Hanson instantons represent a calculable, intrinsic quantum gravity breaking of the Peccei-Quinn symmetry. The s ize of such breaking depends sensitively on the short-distance details of a given theory, but is generically suppressed by multifermion zero modes. We also explain conditions to solve the strong-CP and the doma in wall problems under such quantum gravity effects.