Imperial College London
Alternate

Professor Andrew H Jaffe

Faculty of Natural Sciences, Department of Physics

Professor of Astrophysics and Cosmology
 
 
 
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Contact

 

+44 (0)20 7594 7526a.jaffe Website

 
 
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Assistant

 

Miss Louise Hayward +44 (0)20 7594 7679

 
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Location

 

1018BBlackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Frieman:1992:10.1103/PhysRevD.45.2674,
author = {Frieman, JA and Jaffe, AH},
doi = {10.1103/PhysRevD.45.2674},
journal = {Physical Review D},
pages = {2674--2684},
title = {Cosmological constraints on pseudo Nambu-Goldstone bosons},
url = {http://dx.doi.org/10.1103/PhysRevD.45.2674},
volume = {45},
year = {1992}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Particle-physics models with pseudo Nambu-Goldstone bosons (PNGB's) are characterized by two mass scales: a global spontaneous-symmetry-breaking scale f and a soft (explicit) symmetry-breaking scale . We investigate general model-insensitive constraints on this two-dimensional parameter space arising from the cosmological and astrophysical effects of PNGB's. In particular, we study constraints arising from vacuum misalignment and thermal production of PNGB's, topological defects, and the cosmological effects of PNGB decay products, as well as astrophysical constraints from stellar PNGB emission. Bounds on the Peccei-Quinn axion scale, 1010GeVfPQ 1010-1012GeV, emerge as a special case, where the soft breaking scale is fixed at QCD 100 MeV. © 1992 The American Physical Society.
AU  - Frieman,JA
AU  - Jaffe,AH
DO  - 10.1103/PhysRevD.45.2674
EP  - 2684
PY  - 1992///
SN  - 0556-2821
SP  - 2674
TI  - Cosmological constraints on pseudo Nambu-Goldstone bosons
T2  - Physical Review D
UR  - http://dx.doi.org/10.1103/PhysRevD.45.2674
VL  - 45
ER  -
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