SCOAP3 Repository 25 records found  1 - 10nextendSearch took 0.16 seconds. 
1. Primordial black holes and the string swampland / Kawasaki, Masahiro ; Takhistov, Volodymyr
The “swampland conjectures” have been recently suggested as a set of criteria to assess if effective field theories are consistent with a quantum gravity embedding. [...]
Published in Physical Review D 98 (2018) 10.1103/PhysRevD.98.123514 arXiv:1810.02547
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2. Long-term dynamics of cosmological axion strings / Kawasaki, Masahiro ; Sekiguchi, Toyokazu ; Yamaguchi, Masahide ; Yokoyama, Jun’ichi
We present the results of a new field-theoretic simulation of cosmological axion strings, which are eight times longer than previous ones. [...]
Published in PTEP 2018 (2018) 091E01 10.1093/ptep/pty098 arXiv:1806.05566
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3. Cosmologically allowed regions for the axion decay constant F a / Kawasaki, Masahiro ; Sonomoto, Eisuke ; Yanagida, Tsutomu T.
If the Peccei–Quinn symmetry is already broken during inflation, the decay constant Fa of the axion can be in a wide region from 1011GeV to 1018GeV for the axion being the dominant dark matter. [...]
Published in Physics letters B (2018) 10.1016/j.physletb.2018.05.014
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4. QCD axion dark matter from long-lived domain walls during matter domination / Harigaya, Keisuke ; Kawasaki, Masahiro
The domain wall problem of the Peccei–Quinn mechanism can be solved if the Peccei–Quinn symmetry is explicitly broken by a small amount. [...]
Published in Physics letters B (2018) 10.1016/j.physletb.2018.04.056
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5. Domain wall and isocurvature perturbation problems in a supersymmetric axion model / Kawasaki, Masahiro ; Sonomoto, Eisuke
The axion causes two serious cosmological problems, domain wall and isocurvature perturbation problems. [...]
Published in Phys. Rev. D 97 (2018) 10.1103/PhysRevD.97.083507 arXiv:1710.07269
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6. Adiabatic suppression of the axion abundance and isocurvature due to coupling to hidden monopoles / Kawasaki, Masahiro ; Takahashi, Fuminobu ; Yamada, Masaki
The string theory predicts many light fields called moduli and axions, which cause a cosmological problem due to the overproduction of their coherent oscillation after inflation. [...]
Published in JHEP 1801 (2018) 053 10.1007/JHEP01(2018)053 arXiv:1708.06047
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7. Revisiting big-bang nucleosynthesis constraints on long-lived decaying particles / Kawasaki, Masahiro ; Kohri, Kazunori ; Moroi, Takeo ; Takaesu, Yoshitaro
We study the effects of long-lived massive particles, which decayed during the big-bang nucleosynthesis (BBN) epoch, on the primordial abundance of light elements. [...]
Published in Phys. Rev. D 97 (2018) 10.1103/PhysRevD.97.023502 arXiv:1709.01211
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8. Charged Q-ball dark matter from B and L direction / Hong, Jeong-Pyong ; Kawasaki, Masahiro ; Yamada, Masaki
We consider nearly equal number of gauge mediation type charged (anti-) Q-balls with charge of ±α−1 ≃ ±137 well before the BBN epoch and discussed how they evolve in time. [...]
Published in JCAP 1608 (2016) 053 10.1088/1475-7516/2016/08/053 arXiv:1604.04352
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9. Cosmology with a heavy Polonyi field / Harigaya, Keisuke ; Hayakawa, Taku ; Kawasaki, Masahiro ; Yamada, Masaki
We consider a cosmologically consistent scenario with a heavy Polonyi field. [...]
Published in JCAP 1606 (2016) 015 10.1088/1475-7516/2016/06/015 arXiv:1601.02140
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10. Axino dark matter and baryon number asymmetry production by the Q-ball decay in gauge mediation / Kasuya, Shinta ; Kawakami, Etsuko ; Kawasaki, Masahiro
We investigate the Q-ball decay into the axino dark matter in the gauge-mediated supersymmetry breaking. [...]
Published in JCAP 1603 (2016) 011 10.1088/1475-7516/2016/03/011 arXiv:1511.05655
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SCOAP3 Repository : 25 records found   1 - 10nextend
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1 Kawasaki, M.
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