1.
Phys Rev Lett
; 84(17): 3756-9, 2000 Apr 24.
Article
in English
| MEDLINE
| ID: mdl-11019198
ABSTRACT
We consider the effect of a small-scale matter-antimatter domain structure on big bang nucleosynthesis and place upper limits on the amount of antimatter in the early universe. For small domains, which annihilate before nucleosynthesis, this limit comes from underproduction of 4He. For larger domains, the limit comes from 3He overproduction. Since most of the 3He from &pmacr; 4He annihilation are themselves annihilated, the main source of primordial 3He is the photodisintegration of 4He by the electromagnetic cascades initiated by the annihilation.
Subject(s)
Astronomy , Astronomy/methods , Electromagnetic Fields , Helium , Photochemistry
2.
Phys Rev D Part Fields
; 54(12): 7163-7171, 1996 Dec 15.
Article
in English
| MEDLINE
| ID: mdl-10020731
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Phys Rev D Part Fields
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Article
in English
| MEDLINE
| ID: mdl-10018302
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Phys Rev D Part Fields
; 50(8): 5431-5434, 1994 Oct 15.
Article
in English
| MEDLINE
| ID: mdl-10018197
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Phys Rev D Part Fields
; 50(6): 3738-3745, 1994 Sep 15.
Article
in English
| MEDLINE
| ID: mdl-10018016
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Phys Rev D Part Fields
; 49(8): 3854-3868, 1994 Apr 15.
Article
in English
| MEDLINE
| ID: mdl-10017389
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Phys Rev D Part Fields
; 48(8): 3611-3624, 1993 Oct 15.
Article
in English
| MEDLINE
| ID: mdl-10016635
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Phys Rev D Part Fields
; 44(10): 3072-3076, 1991 Nov 15.
Article
in English
| MEDLINE
| ID: mdl-10013762
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Phys Rev D Part Fields
; 44(10): 3077-3086, 1991 Nov 15.
Article
in English
| MEDLINE
| ID: mdl-10013763
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Phys Rev D Part Fields
; 43(4): 1087-1105, 1991 Feb 15.
Article
in English
| MEDLINE
| ID: mdl-10013480
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Phys Rev D Part Fields
; 42(4): 1047-1056, 1990 Aug 15.
Article
in English
| MEDLINE
| ID: mdl-10012938
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Phys Rev D Part Fields
; 39(4): 1046-1053, 1989 Feb 15.
Article
in English
| MEDLINE
| ID: mdl-9959740
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Phys Rev D Part Fields
; 38(4): 1091-1099, 1988 Aug 15.
Article
in English
| MEDLINE
| ID: mdl-9959246
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Phys Rev D Part Fields
; 37(8): 2104-2110, 1988 Apr 15.
Article
in English
| MEDLINE
| ID: mdl-9958913
16.
Phys Rev D Part Fields
; 35(2): 435-448, 1987 Jan 15.
Article
in English
| MEDLINE
| ID: mdl-9957676
17.
Phys Rev D Part Fields
; 34(6): 1719-1738, 1986 Sep 15.
Article
in English
| MEDLINE
| ID: mdl-9957341
18.
Phys Rev D Part Fields
; 31(8): 1811-1814, 1985 Apr 15.
Article
in English
| MEDLINE
| ID: mdl-9955907