Koji Ishiwata

1.8k total citations
41 papers, 1.2k citations indexed

About

Koji Ishiwata is a scholar working on Nuclear and High Energy Physics, Astronomy and Astrophysics and Atomic and Molecular Physics, and Optics. According to data from OpenAlex, Koji Ishiwata has authored 41 papers receiving a total of 1.2k indexed citations (citations by other indexed papers that have themselves been cited), including 36 papers in Nuclear and High Energy Physics, 29 papers in Astronomy and Astrophysics and 4 papers in Atomic and Molecular Physics, and Optics. Recurrent topics in Koji Ishiwata's work include Cosmology and Gravitation Theories (29 papers), Dark Matter and Cosmic Phenomena (29 papers) and Particle physics theoretical and experimental studies (27 papers). Koji Ishiwata is often cited by papers focused on Cosmology and Gravitation Theories (29 papers), Dark Matter and Cosmic Phenomena (29 papers) and Particle physics theoretical and experimental studies (27 papers). Koji Ishiwata collaborates with scholars based in Japan, United States and Germany. Koji Ishiwata's co-authors include Takeo Moroi, Natsumi Nagata, Junji Hisano, Shigeki Matsumoto, T. Asaka, Mark B. Wise, Shin’ichiro Ando, Takashi Toma, Zoltan Ligeti and Clifford Cheung and has published in prestigious journals such as Physics Letters B, Journal of High Energy Physics and Physical review. B..

In The Last Decade

Koji Ishiwata

40 papers receiving 1.2k citations

Peers

Koji Ishiwata

NHEP

AMPO

EEE

Francesco D’Eramo United States

Pearl Sandick United States

Andrea Tesi Italy

Subhaditya Bhattacharya India

Andrea Thamm Italy

M. Kakizaki Japan

Mathew McCaskey United States

Eder Izaguirre Canada

Peisi Huang United States

Maíra Dutra France

Francesco D’Eramo United States

Koji Ishiwata

974 ×0.8

NHEP

623 ×0.8

46 ×0.8

AMPO

11 ×0.6

4 ×0.5

EEE

Citations per year, relative to Koji Ishiwata Koji Ishiwata (= 1×) peers Francesco D’Eramo

Countries citing papers authored by Koji Ishiwata

Since Specialization

Citations

This map shows the geographic impact of Koji Ishiwata's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Koji Ishiwata with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Koji Ishiwata more than expected).

Fields of papers citing papers by Koji Ishiwata

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Koji Ishiwata. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Koji Ishiwata. The network helps show where Koji Ishiwata may publish in the future.

Co-authorship network of co-authors of Koji Ishiwata

This figure shows the co-authorship network connecting the top 25 collaborators of Koji Ishiwata. A scholar is included among the top collaborators of Koji Ishiwata based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Koji Ishiwata. Koji Ishiwata is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Ishiwata, Koji, et al.. (2022). Subcritical regime of hybrid inflation with modular A4 symmetry. Journal of High Energy Physics. 2022(11). 15 indexed citations

Ando, Shin’ichiro, Nagisa Hiroshima, & Koji Ishiwata. (2022). Constraining the primordial curvature perturbation using dark matter substructure. Physical review. D. 106(10). 13 indexed citations

Ishiwata, Koji & Takashi Toma. (2018). Probing pseudo Nambu-Goldstone boson dark matter at loop level. Journal of High Energy Physics. 2018(12). 41 indexed citations

Ishiwata, Koji, et al.. (2016). WW scattering in a radiative electroweak symmetry breaking scenario. Physical review. D. 94(7). 3 indexed citations

Buchmüller, W. & Koji Ishiwata. (2015). Grand unification and subcritical hybrid inflation. Physical review. D. Particles, fields, gravitation, and cosmology. 91(8). 14 indexed citations

Ishiwata, Koji, et al.. (2015). Direct detection of singlet dark matter in classically scale-invariant standard model. Physics Letters B. 749. 583–588. 19 indexed citations

Ando, Shin’ichiro & Koji Ishiwata. (2015). Constraints on decaying dark matter from the extragalactic gamma-ray background. Journal of Cosmology and Astroparticle Physics. 2015(5). 24–24. 54 indexed citations

Cheung, Clifford & Koji Ishiwata. (2013). Baryogenesis with higher dimension operators. Physical review. D. Particles, fields, gravitation, and cosmology. 88(1). 15 indexed citations

Ishiwata, Koji. (2012). Dark matter in classically scale-invariant two singlets standard model. Physics Letters B. 710(1). 134–138. 40 indexed citations

10.

Ishiwata, Koji, Natsumi Nagata, & Norimi Yokozaki. (2012). Natural supersymmetry and b→sγ constraints. Physics Letters B. 710(1). 145–148. 14 indexed citations

11.

Hisano, Junji, Koji Ishiwata, & Natsumi Nagata. (2011). Direct detection of dark matter degenerate with colored particles in mass. Physics Letters B. 706(2-3). 208–212. 17 indexed citations

12.

Fornal, Bartosz, et al.. (2011). Finite temperature structure of the compactified standard model. Journal of High Energy Physics. 2011(8). 4 indexed citations

13.

Hisano, Junji, et al.. (2011). Direct detection of electroweak-interacting dark matter. Journal of High Energy Physics. 2011(7). 103 indexed citations

14.

Ishiwata, Koji, Shigeki Matsumoto, & Takeo Moroi. (2010). Decaying dark matter in supersymmetric model and cosmic-ray observations. Journal of High Energy Physics. 2010(12). 9 indexed citations

15.

Ishiwata, Koji, Masahiro Kawasaki, Kazunori Kohri, & Takeo Moroi. (2010). Right-handed sneutrino dark matter and big-bang nucleosynthesis. Physics Letters B. 689(4-5). 163–168. 12 indexed citations

16.

Hisano, Junji, Koji Ishiwata, & Natsumi Nagata. (2010). A complete calculation for direct detection of Wino dark matter. Physics Letters B. 690(3). 311–315. 63 indexed citations

17.

Hisano, Junji, Koji Ishiwata, & Natsumi Nagata. (2010). Gluon contribution to dark matter direct detection. Physical review. D. Particles, fields, gravitation, and cosmology. 82(11). 91 indexed citations

18.

Ishiwata, Koji, Shigeki Matsumoto, & Takeo Moroi. (2009). High Energy Cosmic Rays from Decaying Supersymmetric Dark Matter. 35 indexed citations

19.

Ishiwata, Koji, Shigeki Matsumoto, & Takeo Moroi. (2009). Cosmic-ray positron from superparticle dark matter and the PAMELA anomaly. Physics Letters B. 675(5). 446–449. 67 indexed citations

20.

Ishiwata, Koji, Shigeki Matsumoto, & Takeo Moroi. (2008). High energy cosmic rays from the decay of gravitino dark matter. Physical review. D. Particles, fields, gravitation, and cosmology. 78(6). 68 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

Explore authors with similar magnitude of impact