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We investigate the cosmological scenario where the Peccei-Quinn symmetry breaks after inflation. In this scenario, axionic cosmic strings and domain walls form and axions are abundantly produced from these topological defects. These axions contribute to cold dark matter in the present Universe. Employing the state of art field theoretic simulations of the topological defects, we update the estimation of the axion abundance. It is found that axions can be responsible for the cold dark matter in the mass range $m_a=(0.81.3)×10^4$eV for the models with the domain wall number $N_DW=1$, and $m_a=(10^-410^2)$eV with a mild tuning of parameters for the models with $N_{DW}$>1. We also discuss the possibility for near-future experiments to probe these mass ranges of axions.

PTC Seminar / Journal Club / Workshop

PTC Seminar Organizers (click to contact) :
Chang Sub Shin     Jeff Kost     Dongjin Chway
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PTC Journal Club Organizer (click to contact) :
-  Di Xu
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  1. Journal Club Schedule

    Date2017.07.07 CategoryJournal Club BySanghyeon Reply0
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  2. Link to the publications

    Date2017.04.27 CategoryResearch Papers BySanghyeon Reply0
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  3. Use the indico link for the seminar announcements.

    Date2017.04.27 CategoryPTC Seminar BySanghyeon Reply0
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  4. [Seminar] (Mar 22 2016) by Hwidong Yoo on 'Search for leptophobic Z’ decaying into four leptons in the final state at 8 TeV with the CMS detector'

    Date2016.03.16 CategoryPTC Seminar ByAndrew Reply0
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  5. [Journal Club] (Mar 10 2016) by Doh Young Mo on 'Introduction of Jet-Image: New Method for Jet Tagging'

    Date2016.03.11 CategoryJournal Club Bymo Reply0 file
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  6. [Seminar] (Feb 25 2016) by Masahiro Takimoto on 'Cosmology of Peccei-Quinn Field in Early Universe'

    Date2016.02.25 CategoryPTC Seminar ByMin-Seok Reply0 file
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  7. [Seminar] (Feb 24 2016) by Pyungwon Ko on <Dark sector shining through 750GeV dark higgs @ LHC>

    Date2016.02.24 CategoryPTC Seminar ByMin-Seok Reply0 file
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  8. [Seminar] (Feb 18 2016) by Koichi Hamaguchi on <Diphoton Excess and Running Couplings>

    Date2016.02.18 CategoryPTC Seminar Byctpuweb Reply0 file
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  9. [Seminar] (Feb 05 2016) by Priyotosh Bandyopadhyay on <Higgs bosons: discovered and hidden, in extended supersymmetric standard models at the LHC>

    Date2016.02.05 CategoryPTC Seminar Byctpuweb Reply0 file
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  10. [Journal Club] (Feb 04 2016) by Kunio Kaneta on `Isocurvature constraints on portal couplings'

    Date2016.02.04 CategoryJournal Club Byctpuweb Reply0
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  11. [Journal Club] (Jan 28 2016) by Sang Hui Im

    Date2016.01.28 CategoryJournal Club BySanghui Reply0 file
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  12. [Journal Club] (Jan 21 2016) by Ryoutaro Watanabe

    Date2016.01.21 CategoryJournal Club ByRyoutaro Reply0 file
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  13. [School] 2016 Winter School on Collider Physics

    Date2016.01.15 CategoryConference / Workshop Byctpuweb Reply0 file
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  14. [Workshop] Overview on the Recent Diphoton Excess at the LHC Run-II (Jan 08 2016)

    Date2016.01.15 CategoryConference / Workshop Byctpuweb Reply0
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  15. [Workshop] Non-conventional Searches at the LHC (IBS-CTPU Focused Workshop) (Aug 17-20 2015)

    Date2016.01.15 CategoryConference / Workshop Byctpuweb Reply0
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  16. [Seminar] (Jan 13 2016) by Hiroyuki Tashiro on Search for parity-odd signatures in the gamma ray sky

    Date2016.01.13 CategoryPTC Seminar ByMin-Seok Reply0 file
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  17. [Seminar] (Jan 12 2016) by Takashi Okamoto on Small-scale problems of cold dark matter model and baryonic solutions to them

    Date2016.01.12 CategoryPTC Seminar ByMin-Seok Reply0 file
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  18. [Seminar] (Jan 11 2016) by Chang Sub Shin on A complete, calculable, predictive and testable model for all known and required CP violation

    Date2016.01.11 CategoryPTC Seminar ByMin-Seok Reply0 file
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  19. [Journal Club] (Dec 10 2012) by Hyungjin Kim

    Date2015.12.10 CategoryJournal Club ByHyungjin Reply0 file
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  20. [Seminar] (Dec 08 2015) by Paolo Gondolo on Dark Mattert Searches: A Theorest's Perspective

    Date2015.12.08 CategoryPTC Seminar ByMin-Seok Reply0 file
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  21. [Journal Club] (Nov 26 2015) by Toyokazu Sekiguchi

    Date2015.11.27 CategoryJournal Club ByToyo Reply0 file
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  22. [Seminar] (Nov 20 2015) by Jae Sik Lee on Enhanced Charged Higgs Production through W±-Higgs Fusion

    Date2015.11.20 CategoryPTC Seminar ByMin-Seok Reply0 file
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  23. [Seminar] (Oct 28 2015) by Naonori Sugiyama on <Theoretical Modeling of Cosmological Momentum Field through the Kinetic SZ Effect>

    Date2015.11.04 CategoryPTC Seminar ByMin-Seok Reply0 file
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