Klaus Fredenhagen

7.5k total citations · 2 hit papers
68 papers, 3.7k citations indexed

About

Klaus Fredenhagen is a scholar working on Nuclear and High Energy Physics, Statistical and Nonlinear Physics and Atomic and Molecular Physics, and Optics. According to data from OpenAlex, Klaus Fredenhagen has authored 68 papers receiving a total of 3.7k indexed citations (citations by other indexed papers that have themselves been cited), including 34 papers in Nuclear and High Energy Physics, 27 papers in Statistical and Nonlinear Physics and 26 papers in Atomic and Molecular Physics, and Optics. Recurrent topics in Klaus Fredenhagen's work include Black Holes and Theoretical Physics (30 papers), Noncommutative and Quantum Gravity Theories (22 papers) and Advanced Operator Algebra Research (18 papers). Klaus Fredenhagen is often cited by papers focused on Black Holes and Theoretical Physics (30 papers), Noncommutative and Quantum Gravity Theories (22 papers) and Advanced Operator Algebra Research (18 papers). Klaus Fredenhagen collaborates with scholars based in Germany, Italy and United Kingdom. Klaus Fredenhagen's co-authors include Sergio Doplicher, John E. Roberts, Romeo Brunetti, Detlev Buchholz, Mihail Marcu, Karl-Henning Rehren, Bert Schroer, Michael Dütsch, Rudolf Haag and Rainer Verch and has published in prestigious journals such as Physical Review Letters, Nuclear Physics B and Physics Letters B.

In The Last Decade

Klaus Fredenhagen

68 papers receiving 3.5k citations

Hit Papers

The quantum structure of spacetime at the Planck scale an... 1994 2026 2004 2015 1995 1994 200 400 600
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. The quantum structure of spacetime at the Planck scale and quantum fields
    1995 720 citations Klaus Fredenhagen et al. Communications in Mathematical Physics profile →
  2. Spacetime quantization induced by classical gravity
    1994 456 citations Klaus Fredenhagen 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
Klaus Fredenhagen Germany 28 2.3k 2.2k 1.3k 1.1k 992 68 3.7k
Albert Schwarz United States 29 3.0k 1.3× 2.6k 1.1× 642 0.5× 1.1k 1.0× 1.2k 1.2× 100 4.3k
Sergio Doplicher Italy 23 1.6k 0.7× 2.0k 0.9× 1.0k 0.8× 664 0.6× 1.6k 1.6× 54 3.5k
Масуд Чайчиан Finland 34 2.9k 1.3× 3.2k 1.4× 1.5k 1.1× 1.1k 1.0× 542 0.5× 221 4.8k
I. A. Batalin Russia 21 3.3k 1.5× 2.0k 0.9× 566 0.4× 1.0k 0.9× 865 0.9× 96 4.3k
Robbert Dijkgraaf Netherlands 29 2.8k 1.2× 1.9k 0.8× 611 0.5× 1.0k 0.9× 1.0k 1.1× 56 4.2k
Thomas Curtright United States 27 1.9k 0.9× 1.7k 0.8× 837 0.6× 764 0.7× 275 0.3× 93 3.1k
A. P. Balachandran United States 33 3.0k 1.3× 2.0k 0.9× 1.2k 0.9× 1.1k 1.0× 367 0.4× 225 4.2k
D. B. Fairlie United Kingdom 31 1.8k 0.8× 1.6k 0.7× 783 0.6× 652 0.6× 460 0.5× 110 3.3k
Anton Kapustin United States 35 3.3k 1.5× 1.4k 0.6× 1.5k 1.2× 854 0.8× 837 0.8× 87 5.1k
Eric D’Hoker United States 47 4.9k 2.2× 2.0k 0.9× 591 0.5× 2.1k 1.9× 770 0.8× 140 5.8k

Countries citing papers authored by Klaus Fredenhagen

Since Specialization
Citations

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

Fields of papers citing papers by Klaus Fredenhagen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Klaus Fredenhagen

This figure shows the co-authorship network connecting the top 25 collaborators of Klaus Fredenhagen. A scholar is included among the top collaborators of Klaus Fredenhagen 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 Klaus Fredenhagen. Klaus Fredenhagen 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.
Brunetti, Romeo, Michael Dütsch, Klaus Fredenhagen, & Kasia Rejzner. (2023). Unitary, Anomalous Master Ward Identity and its Connections to the Wess–Zumino Condition, BV Formalism and $$L_\infty $$-algebras. Annales Henri Poincaré. 25(5). 2547–2583. 1 indexed citations
2.
Brunetti, Romeo, Michael Dütsch, Klaus Fredenhagen, & Kasia Rejzner. (2022). The Unitary Master Ward Identity: Time Slice Axiom, Noether’s Theorem and Anomalies. Annales Henri Poincaré. 24(2). 469–539. 6 indexed citations
3.
Fredenhagen, Klaus. (2010). Lille 1957: The birth of the concept of local algebras of observables. The European Physical Journal H. 35(3). 239–241. 3 indexed citations
4.
Bär, Christian & Klaus Fredenhagen. (2009). Quantum field theory on curved spacetimes : concepts and mathematical foundations. Springer eBooks. 10 indexed citations
5.
Deuretzbacher, F., Klaus Fredenhagen, D. Becker, et al.. (2008). Exact Solution of Strongly Interacting Quasi-One-Dimensional Spinor Bose Gases. Physical Review Letters. 100(16). 160405–160405. 86 indexed citations
6.
Brunetti, Romeo & Klaus Fredenhagen. (2002). Time of occurrence observable in quantum mechanics. Physical Review A. 66(4). 31 indexed citations
7.
Dütsch, Michael & Klaus Fredenhagen. (2000). Algebraic Quantum Field Theory, Perturbation Theory, and the Loop Expansion. CERN Bulletin. 45 indexed citations
8.
Fredenhagen, Klaus, Matthias R. Gaberdiel, & Stefan Rüger. (1996). Scattering states of plektons (particles with braid group statistics) in 2+1 dimensional quantum field theory. Communications in Mathematical Physics. 175(2). 319–335. 8 indexed citations
9.
Fredenhagen, Klaus, et al.. (1996). Conformal Haag-Kastler nets, pointlike localized fields and the existence of operator product expansions. Communications in Mathematical Physics. 176(3). 541–554. 40 indexed citations
10.
Barata, J. C. A. & Klaus Fredenhagen. (1991). Particle scattering in Euclidean Lattice Field Theories. Communications in Mathematical Physics. 138(3). 507–519. 23 indexed citations
11.
Fredenhagen, Klaus & Rudolf Haag. (1990). On the derivation of Hawking radiation associated with the formation of a black hole. Communications in Mathematical Physics. 127(2). 273–284. 91 indexed citations
12.
Fredenhagen, Klaus, Karl-Henning Rehren, & Bert Schroer. (1989). Superselection sectors with braid group statistics and exchange algebras. Communications in Mathematical Physics. 125(2). 201–226. 206 indexed citations
13.
Evertz, Hans Gerd, K. Jansen, H.A. Kastrup, Klaus Fredenhagen, & Marius Marcu. (1987). Proof of universal perimeter law behaviour of the Wegner-Wilson loop in nonabelian lattice gauge theories with higgs fields. Physics Letters B. 194(2). 277–282. 7 indexed citations
14.
Fredenhagen, Klaus. (1985). On the existence of the real time evolution in Euclidean lattice gauge theories. Communications in Mathematical Physics. 101(4). 579–587. 12 indexed citations
15.
Filk, Thomas, Mihail Marcu, & Klaus Fredenhagen. (1985). Long range correlations in random number generators and their influence on Monte Carlo simulations. Physics Letters B. 165(1-3). 125–130. 20 indexed citations
16.
Fredenhagen, Klaus. (1985). A remark on the cluster theorem. Communications in Mathematical Physics. 97(3). 461–463. 40 indexed citations
17.
Fredenhagen, Klaus & Mihail Marcu. (1983). Charged states in ?2 gauge theories. Communications in Mathematical Physics. 92(1). 81–119. 85 indexed citations
18.
Fredenhagen, Klaus, et al.. (1981). Local algebras of observables and pointlike localized fields. Communications in Mathematical Physics. 80(4). 555–561. 44 indexed citations
19.
Buchholz, Detlev & Klaus Fredenhagen. (1977). Dilations and interaction. Journal of Mathematical Physics. 18(5). 1107–1111. 23 indexed citations
20.
Buchholz, Detlev & Klaus Fredenhagen. (1977). A note on the inverse scattering problem in quantum field theory. Communications in Mathematical Physics. 56(1). 91–99. 5 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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