TY - JOUR
T1 - Detectable Gravitational Wave Signals from Affleck-Dine Baryogenesis
AU - White, Graham
AU - Pearce, Lauren
AU - Vagie, Daniel
AU - Kusenko, Alexander
N1 - Funding Information:
Ministry of Education, Culture, Sports, Science and Technology U.S. Department of Energy Japan Society for the Promotion of Science
Funding Information:
We thank Kazunori Kohri for useful discussions. The work of A. K. and G. W. was supported by World Premier International Research Center Initiative (WPI), MEXT, Japan. A. K. was supported the U.S. Department of Energy (DOE) Grant No. DE-SC0009937 and by Japan Society for the Promotion of Science (JSPS) KAKENHI Grant No. JP20H05853.
Publisher Copyright:
© 2021 Published by the American Physical Society
PY - 2021/10/29
Y1 - 2021/10/29
N2 - In Affleck-Dine baryogenesis, the observed baryon asymmetry of the Universe is generated through the evolution of the vacuum expectation value of a scalar condensate. This scalar condensate generically fragments into nontopological solitons ( balls). If they are sufficiently long-lived, they lead to an early matter domination epoch, which enhances the primordial gravitational wave signal for modes that enter the horizon during this epoch. The sudden decay of the balls results in a rapid transition from matter to radiation domination, producing a sharp peak in the gravitational wave power spectrum. Avoiding the gravitino over-abundance problem favors scenarios where the peak frequency of the resonance is within the range of the Einstein telescope and/or DECIGO. This observable signal provides a mechanism to test Affleck-Dine baryogenesis.
AB - In Affleck-Dine baryogenesis, the observed baryon asymmetry of the Universe is generated through the evolution of the vacuum expectation value of a scalar condensate. This scalar condensate generically fragments into nontopological solitons ( balls). If they are sufficiently long-lived, they lead to an early matter domination epoch, which enhances the primordial gravitational wave signal for modes that enter the horizon during this epoch. The sudden decay of the balls results in a rapid transition from matter to radiation domination, producing a sharp peak in the gravitational wave power spectrum. Avoiding the gravitino over-abundance problem favors scenarios where the peak frequency of the resonance is within the range of the Einstein telescope and/or DECIGO. This observable signal provides a mechanism to test Affleck-Dine baryogenesis.
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U2 - 10.1103/PhysRevLett.127.181601
DO - 10.1103/PhysRevLett.127.181601
M3 - Article
C2 - 34767386
AN - SCOPUS:85118382734
SN - 0031-9007
VL - 127
JO - Physical Review Letters
JF - Physical Review Letters
IS - 18
M1 - 181601
ER -