ForschungTopical Groups
Tests of fundamental physics: Gravity

Tests of fundamental physics: Gravity

Design and realisation of tests of General Relativity, studying gravity at very short distances, relativistic effects in matter wave interferometers.


  • Sophisticated tests of Einsteins's theory of relativity, e.g. possible temporal variation of the gravitational constant, test of the weak and strong equivalence principle, Yukawa-test for the Earth-Moon distance, estimation of metric parameters gamma and alpha
  • Measuring gravity at short distances with micro-machined optomechanical force sensors
  • Relativistic effects in matter wave interferometers, quantum tests of the equivalence principle, dark energy search in the Einstein Elevator
  • Clock tests in gravitational fields


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Albers H, Corgier R, Herbst A, Rajagopalan A, Schubert C, Vogt C et al. All-Optical Matter-Wave Lens using Time-Averaged Potentials. 2021 Sep 17.

Biskupek L, Müller J, Torre JM. Benefit of new high-precision llr data for the determination of relativistic parameters. Universe. 2021 Feb 3;7(2). 34. doi.org/10.3390/universe7020034

Deppner C, Herr W, Cornelius M, Stromberger P, Sternke T, Grzeschik C et al. Collective-Mode Enhanced Matter-Wave Optics. Physical review letters. 2021 Sep 3;127(10). 100401. doi.org/10.1103/PhysRevLett.127.100401

Frye K, Abend S, Bartosch W, Bawamia A, Becker D, Blume H et al. The Bose-Einstein Condensate and Cold Atom Laboratory. EPJ Quantum Technology. 2021 Jan 4;8(1). 1. doi.org/10.1140/epjqt/s40507-020-00090-8

Gebbe M, Siemß J-N, Gersemann M, Müntinga H, Herrmann S, Lämmerzahl C et al. Twin-lattice atom interferometry. Nature Communications. 2021 Mai 5;12(1). 2544. doi.org/10.1038/s41467-021-22823-8

Hensel T, Loriani S, Schubert C, Fitzek F, Abend S, Ahlers H et al. Inertial sensing with quantum gases: a comparative performance study of condensed versus thermal sources for atom interferometry. European Physical Journal D. 2021 Mär 22;75. 108. doi.org/10.1140/epjd/s10053-021-00069-9

List M, Lämmerzahl C. Das Äquivalenzprinzip: Grundlagen, Tests und neueste Messungen. Springer, 2021.

Pfeifer C, Schuster S. Static spherically symmetric black holes in weak f (T)-gravity. Universe. 2021;7(5). 153. doi.org/10.3390/universe7050153

Roura A, Schubert C, Schlippert D, Rasel EM. Measuring gravitational time dilation with delocalized quantum superpositions. Physical Review D. 2021 Okt 1;104(8). 084001. doi.org/10.1103/PhysRevD.104.084001

Singh VV, Biskupek L, Müller J, Zhang M. Impact of non-tidal station loading in LLR. Advances in space research. 2021 Jun 15;67(12):3925-3941. doi.org/10.1016/j.asr.2021.03.018

Zhong L, Sośnica K, Weigelt M, Liu B, Zou X. Time-Variable Gravity Field from the Combination of HLSST and SLR. Remote sensing. 2021 Sep 2;13(17). 3491. doi.org/10.3390/rs13173491

Albers H, Herbst A, Richardson LL, Heine H, Nath D, Hartwig J et al. Quantum test of the Universality of Free Fall using rubidium and potassium. European Physical Journal D. 2020 Jul 1;74(7). 145. doi.org/10.1140/epjd/e2020-10132-6

Canuel B, Abend S, Amaro-Seoane P, Badaracco F, Beaufils Q, Bertoldi A et al. ELGAR: a European Laboratory for Gravitation and Atom-interferometric Research. Classical and Quantum Gravity. 2020 Okt 28;37(22). 225017. doi.org/10.1088/1361-6382/aba80e

Corgier R, Loriani S, Ahlers H, Posso-Trujillo K, Schubert C, Rasel EM et al. Interacting quantum mixtures for precision atom interferometry. New Journal of Physics. 2020 Dez 11;22(12). 123008. doi.org/10.1088/1367-2630/abcbc8

Hohmann M, Pfeifer C, Voicu N. Relativistic kinetic gases as direct sources of gravity. Physical Review D. 2020 Jan 15;101(2). 024062. doi.org/10.1103/PhysRevD.101.024062

Loriani S, Schubert C, Schlippert D, Ertmer W, Pereira Dos Santos F, Rasel EM et al. Resolution of the colocation problem in satellite quantum tests of the universality of free fall. Physical Review D. 2020 Dez 18;102(12). 124043. doi.org/10.1103/PhysRevD.102.124043, doi.org/10.15488/10647

Ufrecht C, Pumpo FD, Friedrich A, Roura A, Schubert C, Schlippert D et al. Atom-interferometric test of the universality of gravitational redshift and free fall. Phys. Rev. Research. 2020 Nov 16;2(4). 043240. doi.org/10.1103/PhysRevResearch.2.043240

Zhang M, Müller J, Biskupek L. Test of the equivalence principle for galaxy’s dark matter by lunar laser ranging. Celestial Mechanics and Dynamical Astronomy. 2020 Mai 14;132(4). 25. doi.org/10.1007/s10569-020-09964-6

Müller J, Murphy TW, Schreiber U, Shelus PJ, Torre JM, Williams JG et al. Lunar Laser Ranging: A tool for general relativity, lunar geophysics and Earth science. Journal of geodesy. 2019 Nov;93(11):2195-2210. doi.org/10.1007/s00190-019-01296-0

Pfeifer C. Finsler spacetime geometry in physics. International Journal of Geometric Methods in Modern Physics. 2019 Nov 1;16. 1941004. doi.org/10.1142/S0219887819410044

Involved QF Members
Members Institution Relevant Expertise
Eva Hackmann, LeaderZARMTests of GR and of alternative/modified theories of gravity
Claus LämmerzahlZARMQuantum Sensors in Free Fall; Relativistic Geodesy; Quantum Objects in Gravity
Florian SeemannZARMQuantum Sensors in Free Fall
Roy BarzelZARMQuantum Objects in Gravity
Jürgen MüllerLUHRelativistic Geodesy; LLR Relativity Test; Application of Quantum Gravimetry
Liliane BiskupekLUHLLR Relativity Test
Ernst M. RaselLUHQuantum Gravimeters; Atom-Chip Based Gravimeters and Inertial Sensors
Uwe BrandPTBExperimental investigation of the Gravitational 1/r2 Law at separations down to sub-µm
Gerhard HeinzelAEIExperimental investigation of the Gravitational 1/r2 Law at separations down to sub-µm
Christian PfeiferZARMGeneral relativity, Quantum Gravity Phenomenology
Sven HerrmannZARMmicrogravity experiments
Christian VogtZARMmicrogravity experiments