Kai Schmitz

6.6k total citations · 1 hit paper
55 papers, 1.6k citations indexed

About

Kai Schmitz is a scholar working on Nuclear and High Energy Physics, Astronomy and Astrophysics and Oceanography. According to data from OpenAlex, Kai Schmitz has authored 55 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 49 papers in Nuclear and High Energy Physics, 48 papers in Astronomy and Astrophysics and 2 papers in Oceanography. Recurrent topics in Kai Schmitz's work include Cosmology and Gravitation Theories (47 papers), Particle physics theoretical and experimental studies (35 papers) and Dark Matter and Cosmic Phenomena (28 papers). Kai Schmitz is often cited by papers focused on Cosmology and Gravitation Theories (47 papers), Particle physics theoretical and experimental studies (35 papers) and Dark Matter and Cosmic Phenomena (28 papers). Kai Schmitz collaborates with scholars based in Germany, Japan and Switzerland. Kai Schmitz's co-authors include Valerie Domcke, W. Buchmüller, Vedran Brdar, Tsutomu T. Yanagida, Simone Blasi, Keisuke Harigaya, Kohei Kamada, Masahiro Ibe, O. O. Sobol and Thomas Hugle and has published in prestigious journals such as Physical Review Letters, Nuclear Physics B and Physics Letters B.

In The Last Decade

Kai Schmitz

53 papers receiving 1.6k citations

Hit Papers

Has NANOGrav Found First ... 2021 2026 2022 2024 2021 50 100 150
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. Has NANOGrav Found First Evidence for Cosmic Strings?
    2021 168 citations Simone Blasi, Vedran Brdar et al. Physical Review Letters profile →

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author Last Decade Papers Cites
Kai Schmitz 1.3k 1.3k 120 63 55 55 1.6k
Cyril Pitrou 1.3k 1.0× 687 0.5× 146 1.2× 52 0.8× 79 1.4× 52 1.4k
Silvia Mollerach 1.3k 0.9× 1.0k 0.8× 151 1.3× 38 0.6× 61 1.1× 41 1.5k
Evangelos I. Sfakianakis 1.0k 0.8× 835 0.6× 139 1.2× 41 0.7× 60 1.1× 32 1.1k
Hyerim Noh 2.0k 1.5× 1.6k 1.3× 167 1.4× 66 1.0× 135 2.5× 91 2.0k
Yuta Hamada 942 0.7× 1.1k 0.9× 39 0.3× 58 0.9× 206 3.7× 56 1.2k
M. Lattanzi 1.2k 0.9× 1.5k 1.1× 46 0.4× 37 0.6× 40 0.7× 62 1.6k
Hiroyuki Tashiro 1.3k 0.9× 971 0.7× 83 0.7× 66 1.0× 48 0.9× 76 1.4k
A. T. Lee 1.1k 0.8× 559 0.4× 50 0.4× 36 0.6× 72 1.3× 23 1.2k
Daniel Grin 1.3k 1.0× 1.1k 0.9× 53 0.4× 123 2.0× 67 1.2× 38 1.4k
J. Alberto Vázquez 896 0.7× 537 0.4× 44 0.4× 40 0.6× 69 1.3× 45 981

Countries citing papers authored by Kai Schmitz

Since Specialization
Citations

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

Fields of papers citing papers by Kai Schmitz

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Kai Schmitz

This figure shows the co-authorship network connecting the top 25 collaborators of Kai Schmitz. A scholar is included among the top collaborators of Kai Schmitz 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 Kai Schmitz. Kai Schmitz 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.
Eckardstein, Richard von, Kai Schmitz, & O. O. Sobol. (2026). Gravitational waves from axion inflation in the gradient expansion formalism. Part I. Pure axion inflation. Journal of High Energy Physics. 2026(1).
2.
Eckardstein, Richard von, Kai Schmitz, & O. O. Sobol. (2025). On the Schwinger effect during axion inflation. Journal of High Energy Physics. 2025(2). 5 indexed citations
3.
Schmitz, Kai, et al.. (2025). Gravitational charge production. Physical review. D. 111(5).
4.
Schmitz, Kai & Tobias Schröder. (2024). Gravitational waves from low-scale cosmic strings. Physical review. D. 110(6). 5 indexed citations
5.
Mitridate, Andrea, et al.. (2024). On the overlap reduction function of pulsar timing array searches for gravitational waves in modified gravity. Classical and Quantum Gravity. 42(1). 15003–15003. 2 indexed citations
6.
Eckardstein, Richard von, Marco Peloso, Kai Schmitz, O. O. Sobol, & Lorenzo Sorbo. (2023). Axion inflation in the strong-backreaction regime: decay of the Anber-Sorbo solution. Journal of High Energy Physics. 2023(11). 21 indexed citations
7.
Brandenburg, Axel, Kohei Kamada, Kyohei Mukaida, Kai Schmitz, & Jennifer Schober. (2023). Chiral magnetohydrodynamics with zero total chirality. Physical review. D. 108(6). 9 indexed citations
8.
Domcke, Valerie, Kohei Kamada, Kyohei Mukaida, Kai Schmitz, & Masaki Yamada. (2023). Wash-in leptogenesis after axion inflation. Journal of High Energy Physics. 2023(1). 20 indexed citations
9.
Buchmüller, W., Valerie Domcke, & Kai Schmitz. (2023). Metastable cosmic strings. Journal of Cosmology and Astroparticle Physics. 2023(11). 20–20. 38 indexed citations
10.
Schmitz, Kai, et al.. (2023). Axion dark matter from frictional misalignment. Journal of High Energy Physics. 2023(1). 14 indexed citations
11.
Domcke, Valerie, Kohei Kamada, Kyohei Mukaida, Kai Schmitz, & Masaki Yamada. (2023). New Constraint on Primordial Lepton Flavor Asymmetries. Physical Review Letters. 130(26). 261803–261803. 17 indexed citations
12.
Buchmüller, W., Valerie Domcke, & Kai Schmitz. (2021). Stochastic gravitational-wave background from metastable cosmic strings. Journal of Cosmology and Astroparticle Physics. 2021(12). 6–6. 72 indexed citations
13.
Blasi, Simone, Vedran Brdar, & Kai Schmitz. (2021). Has NANOGrav Found First Evidence for Cosmic Strings?. Physical Review Letters. 126(4). 41305–41305. 168 indexed citations breakdown →
14.
Domcke, Valerie, Kohei Kamada, Kyohei Mukaida, Kai Schmitz, & Masaki Yamada. (2021). Wash-In Leptogenesis. Physical Review Letters. 126(20). 201802–201802. 33 indexed citations
15.
Blasi, Simone, Vedran Brdar, & Kai Schmitz. (2020). Fingerprint of low-scale leptogenesis in the primordial gravitational-wave spectrum. Physical Review Research. 2(4). 67 indexed citations
16.
Buchmüller, W., Valerie Domcke, & Kai Schmitz. (2020). From NANOGrav to LIGO with metastable cosmic strings. Physics Letters B. 811. 135914–135914. 113 indexed citations
17.
Kusenko, Alexander, Kai Schmitz, & Tsutomu T. Yanagida. (2015). Leptogenesis via Axion Oscillations after Inflation. Physical Review Letters. 115(1). 11302–11302. 46 indexed citations
18.
Domcke, Valerie, Kohei Kamada, & Kai Schmitz. (2013). The Gravitational Wave Spectrum from Cosmological B−L Breaking. 65 indexed citations
19.
Domcke, Valerie & Kai Schmitz. (2012). Superconformal D-Term Inflation. 21 indexed citations
20.
Domcke, Valerie & Kai Schmitz. (2011). Predicting θ13 and the Neutrino Mass Scale from Quark Lepton Mass Hierarchies. 16 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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