Cláus Lämmerzahl

9.7k total citations · 1 hit paper
217 papers, 4.2k citations indexed

About

Cláus Lämmerzahl is a scholar working on Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics and Nuclear and High Energy Physics. According to data from OpenAlex, Cláus Lämmerzahl has authored 217 papers receiving a total of 4.2k indexed citations (citations by other indexed papers that have themselves been cited), including 141 papers in Astronomy and Astrophysics, 82 papers in Atomic and Molecular Physics, and Optics and 76 papers in Nuclear and High Energy Physics. Recurrent topics in Cláus Lämmerzahl's work include Cosmology and Gravitation Theories (80 papers), Black Holes and Theoretical Physics (70 papers) and Noncommutative and Quantum Gravity Theories (45 papers). Cláus Lämmerzahl is often cited by papers focused on Cosmology and Gravitation Theories (80 papers), Black Holes and Theoretical Physics (70 papers) and Noncommutative and Quantum Gravity Theories (45 papers). Cláus Lämmerzahl collaborates with scholars based in Germany, Mexico and United States. Cláus Lämmerzahl's co-authors include Eva Hackmann, Volker Perlick, Jutta Kunz, Arne Grenzebach, Valeria Kagramanova, Alfredo Macı́as, Hansjörg Dittus, Friedrich W. Hehl, Sven Herrmann and Achim Peters and has published in prestigious journals such as Physical Review Letters, Nature Communications and Nature Physics.

In The Last Decade

Cláus Lämmerzahl

203 papers receiving 4.0k citations

Hit Papers

Photon regions and shadows of Kerr-Newman-NUT black holes... 2014 2026 2018 2022 2014 50 100 150 200 250
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. Photon regions and shadows of Kerr-Newman-NUT black holes with a cosmological constant
    2014 288 citations Cláus Lämmerzahl et al. profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Cláus Lämmerzahl Germany 36 2.9k 2.0k 1.4k 996 227 217 4.2k
E. G. Adelberger United States 30 2.8k 1.0× 2.9k 1.4× 1.8k 1.3× 948 1.0× 340 1.5× 98 4.7k
B. R. Heckel United States 29 2.1k 0.7× 2.2k 1.1× 1.8k 1.3× 886 0.9× 213 0.9× 62 3.9k
Yuri N. Obukhov Russia 29 1.9k 0.7× 1.5k 0.8× 1.1k 0.8× 826 0.8× 98 0.4× 136 3.0k
R. Ruffini Italy 39 5.4k 1.9× 3.2k 1.6× 900 0.6× 799 0.8× 244 1.1× 329 6.0k
Robert V. Wagoner United States 31 5.0k 1.7× 3.3k 1.7× 554 0.4× 632 0.6× 375 1.7× 99 5.9k
Bahram Mashhoon United States 38 3.9k 1.4× 2.2k 1.1× 1.2k 0.9× 802 0.8× 431 1.9× 185 4.7k
Friedrich W. Hehl Germany 42 6.1k 2.1× 5.2k 2.6× 1.4k 1.0× 2.5k 2.5× 433 1.9× 149 7.7k
Richard A. Matzner United States 35 2.7k 0.9× 1.9k 0.9× 338 0.2× 456 0.5× 434 1.9× 141 3.1k
Eric Poisson Canada 42 7.9k 2.8× 4.8k 2.4× 802 0.6× 1.2k 1.2× 656 2.9× 111 8.4k
Stefano Liberati Italy 44 5.2k 1.8× 4.1k 2.0× 2.9k 2.1× 3.1k 3.1× 89 0.4× 180 6.7k

Countries citing papers authored by Cláus Lämmerzahl

Since Specialization
Citations

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

Fields of papers citing papers by Cláus Lämmerzahl

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Cláus Lämmerzahl

This figure shows the co-authorship network connecting the top 25 collaborators of Cláus Lämmerzahl. A scholar is included among the top collaborators of Cláus Lämmerzahl 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 Cláus Lämmerzahl. Cláus Lämmerzahl 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.
Lämmerzahl, Cláus, et al.. (2025). Pulse shape optimization against Doppler shifts and delays in optical quantum communication. EPJ Quantum Technology. 12(1).
2.
Gündoğan, Mustafa, et al.. (2024). Entanglement dynamics of photon pairs and quantum memories in the gravitational field of the earth. Quantum. 8. 1273–1273. 3 indexed citations
3.
Müller, Jürgen, et al.. (2023). Equivalence of Active and Passive Gravitational Mass Tested with Lunar Laser Ranging. Physical Review Letters. 131(2). 21401–21401. 6 indexed citations
4.
5.
Albers, H., Robin Corgier, Christian Schubert, et al.. (2022). All-optical matter-wave lens using time-averaged potentials. Communications Physics. 5(1). 7 indexed citations
6.
Herr, Waldemar, Christoph Grzeschik, Alexander Grote, et al.. (2021). Collective-Mode Enhanced Matter-Wave Optics. Physical Review Letters. 127(10). 100401–100401. 58 indexed citations
7.
Hackmann, Eva, et al.. (2020). Relativistic geoid: Gravity potential and relativistic effects. Physical review. D. 101(6). 5 indexed citations
8.
Bretón, Nora, Cláus Lämmerzahl, & Alfredo Macı́as. (2019). Rotating black holes in the Einstein–Euler–Heisenberg theory. Classical and Quantum Gravity. 36(23). 235022–235022. 26 indexed citations
9.
Herrmann, Sven, Felix Finke, Dirk Puetzfeld, et al.. (2018). Test of the Gravitational Redshift withGalileoSatellites in an Eccentric Orbit. Physical Review Letters. 121(23). 231102–231102. 85 indexed citations
10.
Garcı́a, Alberto, Eva Hackmann, Jutta Kunz, Cláus Lämmerzahl, & Alfredo Macı́as. (2015). Motion of test particles in a regular black hole space–time. Journal of Mathematical Physics. 56(3). 44 indexed citations
11.
Enolski, V. Z., Eva Hackmann, Valeria Kagramanova, Jutta Kunz, & Cláus Lämmerzahl. (2011). Inversion of hyperelliptic integrals of arbitrary genus with application to particle motion in general relativity. Journal of Geometry and Physics. 61(5). 899–921. 43 indexed citations
12.
Ni, Wei-Tou, J. Cao, H. Dittus, et al.. (2010). ASTROD optimized for Gravitational Wave detection: ASTROD-GW. 38. 11. 9 indexed citations
13.
Corichi, Alejandro, et al.. (2008). On a Continuum Limit for Loop Quantum Cosmology. AIP conference proceedings. 977. 64–71. 7 indexed citations
14.
Macı́as, Alfredo, Cláus Lämmerzahl, & Abel Camacho. (2008). RECENT DEVELOPMENTS IN GRAVITATION AND COSMOLOGY: 3rd Mexican Meeting on Mathematicaland Experimental Physics. AIPC. 3. 1 indexed citations
15.
Ehlers, Jϋrgen & Cláus Lämmerzahl. (2006). Special relativity : will it survive the next 101 years?. CERN Document Server (European Organization for Nuclear Research). 24 indexed citations
16.
Macı́as, Alfredo, Cláus Lämmerzahl, & Darío Núñez. (2005). Gravitation and Cosmology. Gravitation and Cosmology. 758. 35 indexed citations
17.
Lämmerzahl, Cláus & H. Dittus. (2002). A proposal for testing the weak equivalence principle for charged particles in space. cosp. 34. 2382. 1 indexed citations
18.
Lämmerzahl, Cláus & H. Dittus. (2002). Fundamental Physics in Space: A guide to present projects. Annalen der Physik. 11(2). 95–150. 9 indexed citations
19.
Macı́as, Alfredo, et al.. (2001). Exact solutions and scalar fields in gravity : recent developments. CERN Document Server (European Organization for Nuclear Research). 13 indexed citations
20.
Lämmerzahl, Cláus. (1997). Quantum Tests of Space-Time Structures. 91–117. 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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2026