Naoya Kitajima

1.6k total citations · 1 hit paper
43 papers, 1.1k citations indexed

About

Naoya Kitajima 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, Naoya Kitajima has authored 43 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 37 papers in Nuclear and High Energy Physics, 36 papers in Astronomy and Astrophysics and 10 papers in Atomic and Molecular Physics, and Optics. Recurrent topics in Naoya Kitajima's work include Cosmology and Gravitation Theories (34 papers), Dark Matter and Cosmic Phenomena (32 papers) and Particle physics theoretical and experimental studies (20 papers). Naoya Kitajima is often cited by papers focused on Cosmology and Gravitation Theories (34 papers), Dark Matter and Cosmic Phenomena (32 papers) and Particle physics theoretical and experimental studies (20 papers). Naoya Kitajima collaborates with scholars based in Japan, South Korea and China. Naoya Kitajima's co-authors include Fuminobu Takahashi, Masahiro Kawasaki, Toyokazu Sekiguchi, Kazunori Nakayama, Tetsutaro Higaki, Kwang Sik Jeong, Tsutomu T. Yanagida, Prateek Agrawal, Matthew Reece and Wen Yin and has published in prestigious journals such as Physical Review Letters, Physics Letters B and Optics Letters.

In The Last Decade

Naoya Kitajima

42 papers receiving 1.1k citations

Hit Papers

Gravitational waves from domain wall collapse, and applic... 2024 2026 2025 2024 20 40 60
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. Gravitational waves from domain wall collapse, and application to nanohertz signals with QCD-coupled axions
    2024 70 citations Naoya Kitajima, Kai Murai et al. Physics Letters B profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Naoya Kitajima Japan 18 893 876 151 42 33 43 1.1k
Asher Berlin United States 25 1.3k 1.5× 1.9k 2.2× 204 1.4× 20 0.5× 23 0.7× 67 2.1k
Anson Hook United States 18 894 1.0× 1.2k 1.4× 246 1.6× 22 0.5× 20 0.6× 59 1.4k
Tanner Trickle United States 14 286 0.3× 513 0.6× 268 1.8× 16 0.4× 64 1.9× 24 612
Masha Baryakhtar United States 15 1.2k 1.4× 1.2k 1.4× 351 2.3× 40 1.0× 38 1.2× 20 1.6k
Andrew M. Abrahams United States 20 835 0.9× 639 0.7× 94 0.6× 24 0.6× 18 0.5× 30 909
Junwu Huang Canada 13 553 0.6× 667 0.8× 372 2.5× 10 0.2× 33 1.0× 25 938
Jeff A. Dror United States 19 668 0.7× 968 1.1× 175 1.2× 24 0.6× 5 0.2× 36 1.1k
Maurizio Giannotti United States 25 1.3k 1.5× 1.9k 2.2× 239 1.6× 33 0.8× 22 0.7× 66 2.1k
Andrea Geralico Italy 20 1.4k 1.5× 703 0.8× 98 0.6× 76 1.8× 10 0.3× 105 1.4k
Yu-Dai Tsai United States 17 777 0.9× 1.1k 1.2× 147 1.0× 9 0.2× 7 0.2× 26 1.3k

Countries citing papers authored by Naoya Kitajima

Since Specialization
Citations

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

Fields of papers citing papers by Naoya Kitajima

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Naoya Kitajima

This figure shows the co-authorship network connecting the top 25 collaborators of Naoya Kitajima. A scholar is included among the top collaborators of Naoya Kitajima 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 Naoya Kitajima. Naoya Kitajima 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.
Kitajima, Naoya & Shota Nakagawa. (2025). Abelian-Higgs vortices in the oscillating axion background. Physics Letters B. 871. 139993–139993.
2.
Kitajima, Naoya, Shota Nakagawa, Fuminobu Takahashi, & Wen Yin. (2025). A bound on light dark photon dark matter. Physics Letters B. 862. 139304–139304. 1 indexed citations
3.
Kitajima, Naoya, et al.. (2025). Stability of domain walls with inflationary fluctuations under potential bias, and gravitational wave signatures. Journal of Cosmology and Astroparticle Physics. 2025(7). 53–53. 3 indexed citations
4.
Kasai, Kentaro, et al.. (2024). Primordial origin of supermassive black holes from axion bubbles. Journal of Cosmology and Astroparticle Physics. 2024(5). 92–92. 3 indexed citations
5.
Kitajima, Naoya, et al.. (2024). Gravitational waves from domain wall collapse, and application to nanohertz signals with QCD-coupled axions. Physics Letters B. 851. 138586–138586. 70 indexed citations breakdown →
6.
Kasai, Kentaro, et al.. (2023). Clustering of primordial black holes from QCD axion bubbles. Journal of Cosmology and Astroparticle Physics. 2023(10). 49–49. 10 indexed citations
7.
Kitajima, Naoya & Kazunori Nakayama. (2023). Dark photon dark matter from cosmic strings and gravitational wave background. Journal of High Energy Physics. 2023(8). 13 indexed citations
8.
Kitajima, Naoya & Fuminobu Takahashi. (2023). Resonant production of dark photons from axions without a large coupling. Physical review. D. 107(12). 9 indexed citations
9.
Kitajima, Naoya, Shota Nakagawa, & Fuminobu Takahashi. (2022). Nonthermally trapped inflation by tachyonic dark photon production. Physical review. D. 105(10). 8 indexed citations
10.
Kitajima, Naoya, et al.. (2022). Power spectrum of domain-wall network, and its implications for isotropic and anisotropic cosmic birefringence. Journal of Cosmology and Astroparticle Physics. 2022(10). 43–43. 31 indexed citations
11.
Kitajima, Naoya, Jiro Soda, & Yuko Urakawa. (2021). Nano-Hz Gravitational-Wave Signature from Axion Dark Matter. Physical Review Letters. 126(12). 121301–121301. 26 indexed citations
12.
Kitajima, Naoya, Yuichiro Tada, & Fuminobu Takahashi. (2019). Stochastic inflation with an extremely large number of e-folds. Physics Letters B. 800. 135097–135097. 12 indexed citations
13.
Hajiri, Tetsuya, et al.. (2018). Electromagnetic effects induced by a time-dependent axion field. Physical review. B.. 97(21). 13 indexed citations
14.
Gong, Jinn-Ouk & Naoya Kitajima. (2017). Cosmological stochastic Higgs field stabilization. Physical review. D. 96(6). 6 indexed citations
15.
Kitajima, Naoya, et al.. (2016). Level crossing between the QCD axion and an axionlike particle. Physical review. D. 93(7). 23 indexed citations
16.
Kitajima, Naoya & Fuminobu Takahashi. (2015). Gravitational waves from Higgs domain walls. Physics Letters B. 745. 112–117. 15 indexed citations
17.
Kawasaki, Masahiro, Naoya Kitajima, & Kazunori Nakayama. (2013). Revisiting the cosmological coherent oscillation. Physical review. D. Particles, fields, gravitation, and cosmology. 87(2). 2 indexed citations
18.
Kawasaki, Masahiro, Naoya Kitajima, & Kazunori Nakayama. (2013). Smooth hybrid inflation in a supersymmetric axion model. Physical review. D. Particles, fields, gravitation, and cosmology. 87(3). 3 indexed citations
19.
Sato, Shuichi, S. Miyoki, Masatake Ohashi, et al.. (1999). Loss factors of mirrors for a gravitational wave antenna. Applied Optics. 38(13). 2880–2880. 14 indexed citations
20.
Ueda, Akitoshi, Ken‐ichi Ueda, Shuichi Sato, et al.. (1999). Measurement of Optical Characteristics for Mirrors of the Gravitational Wave Detection Antenna.. The Review of Laser Engineering. 27(2). 116–120. 1 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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