Toru Kojo

2.9k total citations · 1 hit paper
62 papers, 1.9k citations indexed

About

Toru Kojo 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, Toru Kojo has authored 62 papers receiving a total of 1.9k indexed citations (citations by other indexed papers that have themselves been cited), including 55 papers in Nuclear and High Energy Physics, 34 papers in Astronomy and Astrophysics and 9 papers in Atomic and Molecular Physics, and Optics. Recurrent topics in Toru Kojo's work include Quantum Chromodynamics and Particle Interactions (49 papers), High-Energy Particle Collisions Research (43 papers) and Pulsars and Gravitational Waves Research (31 papers). Toru Kojo is often cited by papers focused on Quantum Chromodynamics and Particle Interactions (49 papers), High-Energy Particle Collisions Research (43 papers) and Pulsars and Gravitational Waves Research (31 papers). Toru Kojo collaborates with scholars based in Japan, China and United States. Toru Kojo's co-authors include Gordon Baym, Tetsuo Hatsuda, Yifan Song, Philip D. Powell, T. Takatsuka, Robert D. Pisarski, Nan Su, Larry McLerran, Yoshimasa Hidaka and Daiki Suenaga and has published in prestigious journals such as Physical Review Letters, The Astrophysical Journal and Physics Letters B.

In The Last Decade

Toru Kojo

62 papers receiving 1.9k citations

Hit Papers

From hadrons to quarks in neutron stars: a review 2018 2026 2020 2023 2018 100 200 300 400
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. From hadrons to quarks in neutron stars: a review
    2018 491 citations Gordon Baym, Tetsuo Hatsuda et al. Reports on Progress in Physics profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Toru Kojo Japan 22 1.3k 1.2k 385 383 128 62 1.9k
Laura Tolós Spain 30 1.9k 1.5× 1.0k 0.8× 324 0.8× 331 0.9× 128 1.0× 106 2.6k
D. N. Voskresensky Russia 28 1.2k 1.0× 1.7k 1.4× 714 1.9× 499 1.3× 144 1.1× 53 2.2k
Toshitaka Tatsumi Japan 21 892 0.7× 1.1k 0.9× 505 1.3× 455 1.2× 63 0.5× 87 1.5k
E. É. Kolomeitsev Russia 21 1.4k 1.1× 641 0.5× 275 0.7× 276 0.7× 56 0.4× 62 1.8k
Efrain J. Ferrer United States 24 1.3k 1.0× 1.1k 0.9× 424 1.1× 727 1.9× 44 0.3× 79 1.9k
H. Grigorian Armenia 19 748 0.6× 1.3k 1.1× 524 1.4× 279 0.7× 159 1.2× 59 1.5k
Wolfram Weise Germany 20 1.1k 0.9× 497 0.4× 176 0.5× 415 1.1× 67 0.5× 33 1.5k
Verônica Dexheimer United States 25 967 0.8× 1.7k 1.4× 618 1.6× 335 0.9× 176 1.4× 75 2.0k
Vivian de la Incera United States 24 1.2k 1.0× 1.0k 0.9× 396 1.0× 678 1.8× 44 0.3× 68 1.8k
T. Takatsuka Japan 16 568 0.5× 1.1k 0.9× 439 1.1× 512 1.3× 139 1.1× 74 1.4k

Countries citing papers authored by Toru Kojo

Since Specialization
Citations

This map shows the geographic impact of Toru Kojo'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 Toru Kojo with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Toru Kojo more than expected).

Fields of papers citing papers by Toru Kojo

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Toru Kojo. 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 Toru Kojo. The network helps show where Toru Kojo may publish in the future.

Co-authorship network of co-authors of Toru Kojo

This figure shows the co-authorship network connecting the top 25 collaborators of Toru Kojo. A scholar is included among the top collaborators of Toru Kojo 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 Toru Kojo. Toru Kojo is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Kojo, Toru, et al.. (2025). Neutron-quark Stars: Discerning Viable Alternatives for the Higher-density Part of the Equation of State of Compact Stars. The Astrophysical Journal Letters. 991(1). L12–L12. 3 indexed citations
2.
Fujimoto, Yuki, Toru Kojo, & Larry McLerran. (2025). Quarkyonic solution to the hyperon puzzle. EPJ Web of Conferences. 316. 7007–7007. 1 indexed citations
3.
4.
Kojo, Toru, et al.. (2024). Sound velocity peak and conformality in isospin QCD. Physical review. D. 109(7). 20 indexed citations
5.
Kojo, Toru, et al.. (2024). Thermal effects on sound velocity peak and conformality in isospin QCD. Physical review. D. 110(5). 5 indexed citations
6.
Kojo, Toru, et al.. (2023). Parity doublet model for baryon octets: Diquark classifications and mass hierarchy based on the quark-line diagram. Physical review. D. 108(7). 6 indexed citations
7.
Kojo, Toru, et al.. (2023). Chiral Restoration of Nucleons in Neutron Star Matter: Studies Based on a Parity Doublet Model. Symmetry. 15(3). 745–745. 20 indexed citations
8.
Baiotti, Luca, Toru Kojo, Kentaro Takami, et al.. (2022). Merger and Postmerger of Binary Neutron Stars with a Quark-Hadron Crossover Equation of State. Physical Review Letters. 129(18). 181101–181101. 52 indexed citations
9.
Kojo, Toru, et al.. (2022). Impacts of the U(1)A anomaly on nuclear and neutron star equation of state based on a parity doublet model. Physical review. C. 106(6). 17 indexed citations
10.
Kojo, Toru & Daiki Suenaga. (2022). Peaks of sound velocity in two color dense QCD: Quark saturation effects and semishort range correlations. Physical review. D. 105(7). 30 indexed citations
11.
12.
Baym, Gordon, Tetsuo Hatsuda, Toru Kojo, et al.. (2018). From hadrons to quarks in neutron stars: a review. Reports on Progress in Physics. 81(5). 56902–56902. 491 indexed citations breakdown →
13.
Kojo, Toru. (2018). Phenomenological QCD equations of state for neutron star mergers. 71–71. 1 indexed citations
14.
Kojo, Toru. (2017). Pseudo Nambu–Goldstone modes in neutron stars. Physics Letters B. 769. 14–20. 3 indexed citations
15.
Hou, Defu, et al.. (2017). Functional renormalization group study of the quark-meson model with ω meson. Physical review. D. 96(11). 27 indexed citations
16.
Kojo, Toru. (2012). . Acta Physica Polonica B Proceedings Supplement. 5(3). 781–781. 1 indexed citations
17.
Kojo, Toru, Yoshimasa Hidaka, Kenji Fukushima, Larry McLerran, & Robert D. Pisarski. (2011). Interweaving chiral spirals. Nuclear Physics A. 875. 94–138. 78 indexed citations
18.
Suganuma, Hideo, Kanabu Nawa, & Toru Kojo. (2009). Baryons and Baryonic Matter in Holographic QCD from Superstring. Nuclear Physics B - Proceedings Supplements. 186. 248–251. 2 indexed citations
19.
Kojo, Toru & Daisuke Jido. (2008). Sigma meson in pole-dominated QCD sum rules. Physical review. D. Particles, fields, gravitation, and cosmology. 78(11). 24 indexed citations
20.
Kojo, Toru, A. Hayashigaki, & Daisuke Jido. (2006). Pentaquark state in pole-dominated QCD sum rules. Physical Review C. 74(4). 7 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.

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