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## PapersYou can find a list of my works in different online data bases: ## Dirk Puetzfeld's articles on INSPIRE HEP## Dirk Puetzfeld's articles on ARXIV## Dirk Puetzfeld's profile on RESEARCHER ID## Dirk Puetzfeld's profile on ORCIDFor a full list of publications please also see below. ## submitted / in press- Y.N. Obukhov, D. Puetzfeld: Measuring the gravitational field in General Relativity: From deviation equations and the gravitational compass to relativistic clock gradiometry, to appear in ''Relativistic Geodesy: Foundations and Application'', D. Puetzfeld et. al. (eds.), Fundamental Theories of Physics, 52 pages, Springer 2018, accepted / in print, arXiv:1811.10474 [gr-qc]
- D. Puetzfeld, Y.N. Obukhov: Operational significance of the deviation equation in relativistic geodesy, to appear in Encyclopedia of Geodesy, Eds. E. Grafarend, Springer Living Reference Work
- D. Philipp, D. Puetzfeld, C. Laemmerzahl: On the applicability of the geodesic deviation equation in General Relativity, to appear in ''Relativistic Geodesy: Foundations and Application'', D. Puetzfeld et. al. (eds.), Fundamental Theories of Physics, 39 pages, Springer 2018, accepted / in print
## publications- S. Herrmann, F. Finke, M. Luelf, O. Kichakowa, D. Puetzfeld, (+12 additional coauthors): Test of the gravitational redshift with Galileo satellites in an eccentric orbit, Phys. Rev. Lett. 121 (2018) 231102.
- D. Puetzfeld, Y.N. Obukhov, C. Laemmerzahl: Gravitational clock compass in General Relativity, Phys. Rev. D 98 (2018) 024032.
- D. Puetzfeld, Y.N. Obukhov: Deviation equation in Riemann-Cartan spacetime, Phys. Rev. D 97 (2018) 104069.
- D. Philipp, V. Perlick, D. Puetzfeld, E. Hackmann, C. Laemmerzahl: The relativistic geoid, IEEE International Workshop on Metrology for AeroSpace (MetroAeroSpace) Proceedings 2017, pp. 114-119.
- D. Philipp, V. Perlick, D. Puetzfeld, E. Hackmann, C. Laemmerzahl: Definition of the relativistic geoid in terms of isochronometric surfaces, Phys. Rev. D 95 (2017) 104037.
- Y.N. Obukhov, D. Puetzfeld: Dynamics of test bodies in scalar-tensor theory and equivalence principle, Gravitation, Astrophysics, and Cosmology - Proceedings of the Twelfth Asia-Pacific International Conference, Moscow, 28 Jun - 5 July 2015, Eds. V. Melnikov and J.-P. Hsu, World Scientific (Singapore), 2016, pp. 231-235.
- D. Puetzfeld, Y.N. Obukhov: Generalized deviation equation and determination of the curvature in General Relativity, Phys. Rev. D 93 (2016) 044073.
- Y.N. Obukhov, F. Portales-Oliva, D. Puetzfeld, G.F. Rubilar: Invariant conserved currents in generalized gravity, Phys. Rev. D 92 (2015) 104010.
- D. Puetzfeld, Y.N. Obukhov: Equivalence principle in scalar-tensor gravity, Phys. Rev. D 92 (2015) 081502(R).
- Y.N. Obukhov, D. Puetzfeld: Multipolar test body equations of motion in generalized gravity theories, ''Equations of Motion in Relativistic Gravity'', D. Puetzfeld et. al. (eds.), Fundamental Theories of Physics 179, pages 67-119, Springer 2015.
- A. Eckart, S. Britzen, M. Valencia-S., C. Straubmeier, J.A. Zensus, V. Karas, D. Kunneriath, A. Alberdi, N. Sabha, R. Schoedel, D. Puetzfeld: The galactic center black hole laboratory, ''Equations of Motion in Relativistic Gravity'', D. Puetzfeld et. al. (eds.), Fundamental Theories of Physics 179, pages 759-781, Springer 2015.
- D. Philipp, D. Puetzfeld, C. Laemmerzahl: On geodesic deviation in static spherically symmetric situations, Proceedings of the MG14 Meeting on General Relativity University of Rome, Italy (2015), World Scientific, pp. 3731-3736.
- Y.N. Obukhov, D. Puetzfeld: Equations of motion in scalar-tensor theories of gravity: A covariant multipolar approach, Phys. Rev. D 90 (2014) 104041.
- D. Puetzfeld, Y.N. Obukhov: Equations of motion in metric-affine gravity: a covariant unified framework, Phys. Rev. D 90 (2014) 084034.
- E. Hackmann, C. Laemmerzahl, Y.N. Obukhov, D. Puetzfeld, I. Schaffer: Motion of spinning test bodies in Kerr spacetime, Phys. Rev. D 90 (2014) 064035.
- D. Puetzfeld, Y.N. Obukhov: Prospects of detecting spacetime torsion, Int. J. Mod. Phys. D 23 (2014) 1442004.
- Y.N. Obukhov, D. Puetzfeld: Conservation laws and covariant equations of motion for spinning particles, Proceedings of XV Advanced Research Workshop on High Energy Spin Physics "DSPIN-13", Dubna, 8-12 October 2013, Eds. A.V. Efremov and S.V. Goloskokov (Joint Inst. Nucl. Res., JINR, Dubna, 2014) p. 110-115.
- Y.N. Obukhov, D. Puetzfeld: Conservation laws in gravity: A unified framework, Phys. Rev. D 90 (2014) 024004.
- D. Puetzfeld, Y.N. Obukhov: Equations of motion in gravity theories with nonminimal coupling: a loophole to detect torsion macroscopically?, Phys. Rev. D 88 (2013) 064025.
- D. Puetzfeld, Y.N. Obukhov: Unraveling gravity beyond Einstein with extended test bodies, Phys. Lett. A 377 (2013) 2447.
- F.W. Hehl, Y.N. Obukhov, D. Puetzfeld: On Poincaré gauge theory of gravity, its equations of motion, and Gravity Probe B, Phys. Lett. A 377 (2013) 1775.
- Y.N. Obukhov, D. Puetzfeld: Conservation laws in gravitational theories with general nonminimal coupling, Phys. Rev. D 87 (2013) 081502(R).
- D. Puetzfeld, Y.N. Obukhov: Covariant equations of motion for test bodies in gravitational theories with general nonminimal coupling, Phys. Rev. D 87 (2013) 044045.
- J. Steinhoff, D. Puetzfeld: Influence of internal structure on the motion of test bodies in extreme mass ratio situations (MG13), Proceedings of the 13th Marcel Grossman Meeting.
- J. Steinhoff, D. Puetzfeld: Influence of internal structure on the motion of test bodies in extreme mass ratio situations, Phys. Rev. D 86 (2012) 044033.
- Y.N. Obukhov, D. Puetzfeld: Spinning particles in de Sitter spacetime, Proceedings of the XIV-th Workshop on High Energy Spin Physics DSPIN-11, Dubna, Russia, September 20-24, 2011.
- Y.N. Obukhov, D. Puetzfeld: Dynamics of test bodies with spin in de Sitter spacetime, Phys. Rev. D 83 (2011) 044024.
- J. Steinhoff, D. Puetzfeld: Multipolar equations of motion for extended test bodies in General Relativity, Phys. Rev. D 81 (2010) 044019.
- D. Puetzfeld, Y.N. Obukhov: Motion of test bodies in theories with nonminimal coupling, Phys. Rev. D 78 (2008) 121501.
- D. Puetzfeld, Y.N. Obukhov: Probing non-Riemannian spacetime geometry, Phys. Lett. A 372 (2008) 6711.
- D. Puetzfeld: The motion of test bodies with microstructure in gauge gravity models, Acta Phys. Pol. B Proc. Supp. 1 (2008) 167.
- D. Puetzfeld, Y.N. Obukhov: Propagation equations for deformable test bodies with microstructure in extended theories of gravity, Phys. Rev. D 76 (2007) 084025
- D. Puetzfeld: PROCRUSTES: A computer algebra package for post-Newtonian calculations in General Relativity, Comp. Phys. Comm. 175 (2006) 497-508
- J. Hwang, H. Noh, D. Puetzfeld: Cosmological nonlinear hydrodynamics with post-Newtonian corrections, J. Cosm. Astrop. Phys. 3 (2008) 10
- D. Puetzfeld: Beyond linearized cosmology, Proceedings of the PASCOS 2005 symposium, Gyeongju, Korea, May 30 - June 4 (2005), Eds. K. Choi, J.E. Kim, D. Son, AIP Conference Proceedings 805, (2005) 483-486
- D. Puetzfeld: Prospects of non-Riemannian cosmology, Proceedings of the 22nd Texas Symposium on Rel. Astrophysics, Stanford University, December (2004)
- D. Puetzfeld: Status of non-Riemannian cosmology, New Astronomy Reviews 49 (2005) 59-64
- D. Puetzfeld, M. Pohl, Z.H. Zhu: Complementary constraints from FR IIb radio galaxies and X-ray gas mass fractions in clusters on non-standard cosmological models, Astrophys. J. 619 (2005) 657-666
- D. Puetzfeld, X. Chen: Testing non-standard cosmological models with supernovae, Class. Quantum Grav. 21 (2004) 2703-2722
- D. Puetzfeld: A cosmological model in Weyl-Cartan spacetime: II. Magnitude-redshift relation, Class. Quantum Grav. 19 (2002) 4463-4482
- D. Puetzfeld: A non-standard cosmological model , Int. J. of Mod. Physics A Vol. 17 No. 20 (2002) 277
- D. Puetzfeld: A cosmological model in Weyl-Cartan spacetime: I. Field equations and solutions, Class. Quantum Grav. 19 (2002) 3263-3280
- D. Puetzfeld, R. Tresguerres: A cosmological model in Weyl-Cartan spacetime, Class. Quantum Grav. 19 (2002) 3263-3280
- D. Puetzfeld: An exact plane-fronted wave solution in metric-affine gravity, Proceedings of "Exact solutions and scalar fields in gravity: Recent Developments", CINVESTAV-IPN, Mexico City (2000)
- A. Garcia, A. Macias, D. Puetzfeld, J. Socorro: Plane-fronted waves in metric-affine gravity, Physical Review D 62 (2000) 044021
## theses- D. Puetzfeld: Building and testing cosmological models: From Friedmann to Weyl-Cartan, PhD. thesis, University of Cologne (2003)
- D. Puetzfeld: Exact solutions in metric-affine gauge theory of gravity, Diploma thesis, University of Cologne (2000)
## submitted / in press## Measuring the gravitational field in General Relativity: From deviation equations and the gravitational compass to relativistic clock gradiometryYuri N. Obukhov, Dirk Puetzfeld
To appear in ''Relativistic Geodesy: Foundations and Application'', D. Puetzfeld et. al. (eds.), Fundamental Theories of Physics, 52 pages, Springer 2018, accepted / in print [ pdf | gr-qc/1811.10474 ] ## Operational significance of the deviation equation in relativistic geodesyDirk Puetzfeld, Yuri N. Obukhov
8 pages, to appear in Encyclopedia of Geodesy, Eds. E. Grafarend, Springer Living Reference Work, ISBN: 978-3-319-02370-0 (Print), 978-3-319-02370-0 (Online), 2018 ## On the applicability of the geodesic deviation equation in General RelativityDennis Philipp, Dirk Puetzfeld, Claus Laemmerzahl
To appear in ''Relativistic Geodesy: Foundations and Application'', D. Puetzfeld et. al. (eds.), Fundamental Theories of Physics, 39 pages, Springer 2018, accepted / in print [ pdf | gr-qc/1604.07173 ] ## publications## Test of the gravitational redshift with Galileo satellites in an eccentric orbitS. Herrmann, F. Finke, M. Luelf, O. Kichakowa, D. Puetzfeld, D. Knickmann, M. List, B. Rievers, G. Giorgi, C. Guenther, H. Dittus, R. Prieto-Cerdeira, F. Dilssner, F. Gonzalez, E. Schoenemann, J. Ventura-Traveset, C. Laemmerzahl
Phys. Rev. Lett, 121 (2018) 231102, DOI: 10.1103/PhysRevLett.121.231102 [ PRL server ] ## Gravitational clock compass in General RelativityDirk Puetzfeld, Yuri N. Obukhov, Claus Laemmerzahl
12 pages, 6 figure, Phys. Rev. D 98 (2018) 024032, DOI: 10.1103/PhysRevD.98.024032 [ pdf | gr-qc/1805.10673 | Phys. Rev. D server ] ## Deviation equation in Riemann-Cartan spacetimeDirk Puetzfeld, Yuri N. Obukhov
9 pages, 1 figure, Phys. Rev. D 97 (2018) 104069, DOI: 10.1103/PhysRevD.97.104069 [ pdf | gr-qc/1804.11106 | Phys. Rev. D server ] ## The relativistic geoidD. Philipp, V. Perlick, D. Puetzfeld, E. Hackmann, C. Laemmerzahl
6 pages, 2 figures, IEEE International Workshop on Metrology for AeroSpace (MetroAeroSpace) Proceedings, ISBN: 978-1-5090-4233-3, DOI: 10.1109/MetroAeroSpace.2017.7999549 [ IEEE server ] ## Definition of the relativistic geoid in terms of isochronometric surfacesD. Philipp, V. Perlick, D. Puetzfeld, E. Hackmann, C. Laemmerzahl
24 pages, 7 figures, Phys. Rev. D 95 (2017) 104037, DOI: 10.1103/PhysRevD.95.104037 [ pdf | gr-qc/1702.08412 | Phys. Rev. D server ] ## Dynamics of test bodies in scalar-tensor theory and equivalence principleYuri N. Obukhov, Dirk Puetzfeld
5 pages, Gravitation, Astrophysics, and Cosmology - Proceedings of the Twelfth Asia-Pacific International Conference, Moscow, 28 Jun - 5 July 2015, Eds. V. Melnikov and J.-P. Hsu, World Scientific (Singapore), 2016, pp. 231-235, DOI: 10.1142/9789814759816_0043 [ pdf | gr-qc/1603.09106 | WSPC server ] ## Generalized deviation equation and determination of the curvature in General RelativityDirk Puetzfeld, Yuri N. Obukhov
16 pages, 5 figures, Phys. Rev. D 93 (2016) 044073, DOI: 10.1103/PhysRevD.93.044073 [ pdf | gr-qc/1511.08465 | Phys. Rev. D server ] ## Invariant conserved currents in generalized gravityY.N. Obukhov, F. Portales-Oliva, D. Puetzfeld, G.F. Rubilar
15 pages, Phys. Rev. D 92 (2015) 104010, DOI: 10.1103/PhysRevD.92.104010 [ pdf | gr-qc/1507.02191 | Phys. Rev. D server ] ## Equivalence principle in scalar-tensor gravityDirk Puetzfeld, Yuri N. Obukhov
5 pages, Phys. Rev. D 92 (2015) 081502(R), DOI: 10.1103/PhysRevD.92.081502 [ pdf | gr-qc/1505.01285 | Phys. Rev. D server ] ## Multipolar test body equations of motion in generalized gravity theoriesYuri N. Obukhov, Dirk Puetzfeld
''Equations of Motion in Relativistic Gravity'', D. Puetzfeld et. al. (eds.), Fundamental theories of Physics 179, pages 67-119, Springer 2015, DOI: 10.1007/978-3-319-18335-0, ISBN: 978-3-319-18334-3 (print), 978-3-319-18335-0 (online) [ pdf | gr-qc/1505.01680 | Springer server ] ## The galactic center black hole laboratoryA. Eckart, S. Britzen, M. Valencia-S., C. Straubmeier, J.A. Zensus, V. Karas, D. Kunneriath, A. Alberdi, N. Sabha, R. Schoedel, D. Puetzfeld
''Equations of Motion in Relativistic Gravity'', D. Puetzfeld et. al. (eds.), Fundamental theories of Physics, 179, pages 759-781, Springer 2015, DOI: 10.1007/978-3-319-18335-0, ISBN: 978-3-319-18334-3 (print), 978-3-319-18335-0 (online) [ pdf | astro-ph/1501.02171 | Springer server ] ## On geodesic deviation in static spherically symmetric situationsD. Philipp, D. Puetzfeld, C. Laemmerzahl
6 pages, Proceedings of the MG14 Meeting on General Relativity, University of Rome, Italy, 12-18 July 2015, World Scientific, DOI: 10.1142/9789813226609_0489, ISBN: 978-981-3226-59-3 (print), pp. 3731-3736 ## Equations of motion in scalar-tensor theories of gravity: A covariant multipolar approachYuri N. Obukhov, Dirk Puetzfeld
5 pages, Phys. Rev. D 90 (2014) 104041, DOI: 10.1103/PhysRevD.90.104041 [ pdf | gr-qc/1404.6977 | Phys. Rev. D server ] ## Equations of motion in metric-affine gravity: a covariant unified frameworkDirk Puetzfeld, Yuri N. Obukhov
13 pages, Phys. Rev. D 90 (2014) 084034, DOI: 10.1103/PhysRevD.90.084034, Dedicated to Friedrich W. Hehl on the occasion of his birthday [ pdf | gr-qc/1408.5669 | Phys. Rev. D server ] ## Motion of spinning test bodies in Kerr spacetimeE. Hackmann, C. Laemmerzahl, Y.N. Obukhov, D. Puetzfeld, I. Schaffer
12 pages, 5 figures, Phys. Rev. D 90 (2014) 064035, DOI: 10.1103/PhysRevD.90.064035 [ pdf | gr-qc/1408.1773 | Phys. Rev. D server] ## Prospects of detecting spacetime torsionDirk Puetzfeld, Yuri N. Obukhov
This essay received a honorable mention in the 2014 essay competition of the Gravity Research Foundation. 6 pages, Int. J. Mod. Phys. D 23 (2014) 1442004, DOI: 10.1142/S0218271814420048 [ pdf | gr-qc/1405.4137| Int. J. Mod. Phys. D server ] ## Conservation laws and covariant equations of motion for spinning particlesYuri N. Obukhov, Dirk Puetzfeld
6 pages, Proceedings of XV Advanced Research Workshop on High Energy Spin Physics "DSPIN-13", Dubna, 8-12 October 2013, Eds. A.V. Efremov and S.V. Goloskokov (Joint Inst. Nucl. Res., JINR, Dubna, 2014) p. 110-115 [ pdf | gr-qc/1509.05900 ] ## Conservation laws in gravity: A unified frameworkYuri N. Obukhov, Dirk Puetzfeld
9 pages, Phys. Rev. D 90 (2014) 024004, DOI: 10.1103/PhysRevD.90.024004 [ pdf | gr-qc/1405.4003 | Phys. Rev. D server ] ## Equations of motion in gravity theories with nonminimal coupling: a loophole to detect torsion macroscopically?Dirk Puetzfeld, Yuri N. Obukhov
9 pages, Phys. Rev. D 88 (2013) 064025, DOI: 10.1103/PhysRevD.88.064025 [ pdf | gr-qc/1308.3369 | Phys. Rev. D server ] ## Unraveling gravity beyond Einstein with extended test bodiesDirk Puetzfeld, Yuri N. Obukhov
3 pages, Phys. Lett. A 377 (2013) 2447, DOI: 10.1016/j.physleta.2013.07.024 [ pdf | gr-qc/1307.3933 | Phys. Lett. A server ] ## On Poincaré gauge theory of gravity, its equations of motion, and Gravity Probe BFriedrich W. Hehl, Yuri N. Obukhov, Dirk Puetzfeld
7 pages, Phys. Lett. A 377 (2013) 1775, DOI: 10.1016/j.physleta.2013.04.055 [ pdf | gr-qc/1304.2769 | Phys. Lett. A server ] ## Conservation laws in gravitational theories with general nonminimal couplingYuri N. Obukhov, Dirk Puetzfeld
6 pages, Phys. Rev. D 87 (2013) 081502(R), DOI: 10.1103/PhysRevD.87.081502 [ pdf | gr-qc/1303.6050 | Phys. Rev. D server ] ## Covariant equations of motion for test bodies in gravitational theories with general nonminimal couplingDirk Puetzfeld, Yuri N. Obukhov
7 pages, Phys. Rev. D 87 (2013) 044045, DOI: 10.1103/PhysRevD.87.044045 [ pdf | gr-qc/1301.4341 | Phys. Rev. D server ] ## Influence of internal structure on the motion of test bodies in extreme mass ratio situations (MG13) Jan Steinhoff, Dirk Puetzfeld
3 pages, 1 figure, Proceedings of the 13th Marcel Grossman Meeting [ pdf | gr-qc/1302.2564 ] ## Influence of internal structure on the motion of test bodies in extreme mass ratio situations Jan Steinhoff, Dirk Puetzfeld
20 pages, 6 figures, Phys. Rev. D 86 (2012) 044033, DOI: 10.1103/PhysRevD.86.044033 [ pdf | gr-qc/1205.3926 | Phys. Rev. D server ] ## Spinning particles in de Sitter spacetime Yuri N. Obukhov, Dirk Puetzfeld
4 pages, Proceedings of the XIV-th Workshop on High Energy Spin Physics DSPIN-11, Dubna, Russia, September 20-24, 2011 [ pdf | gr-qc/1201.2053 ] ## Dynamics of test bodies with spin in de Sitter spacetime Yuri N. Obukhov, Dirk Puetzfeld
10 pages, Phys. Rev. D 83 (2011) 044024, DOI: 10.1103/PhysRevD.83.044024 [ pdf | gr-qc/1010.1451 | Phys. Rev. D server ] ## Multipolar equations of motion for extended test bodies in General Relativity Jan Steinhoff, Dirk Puetzfeld
18 pages, Phys. Rev. D 81 (2010) 044019, DOI: 10.1103/PhysRevD.81.044019 [ pdf | gr-qc/0909.3756 | Phys. Rev. D server] ## Motion of test bodies in theories with nonminimal couplingDirk Puetzfeld, Yuri N. Obukhov
5 pages, Phys. Rev. D 78 (2008) 121501, DOI: 10.1103/PhysRevD.78.121501 [ pdf | astro-ph/0811.0913 | Phys. Rev. D server ] ## Probing non-Riemannian spacetime geometryDirk Puetzfeld, Yuri N. Obukhov
6 pages, 1 figure, Phys. Lett. A 372 (2008) 6711, DOI: 10.1016/j.physleta.2008.09.041 [ pdf | gr-qc/0708.1926 | Phys. Lett. A server ] ## The motion of test bodies with microstructure in gauge gravity modelsDirk Puetzfeld
6 pages, Acta Phys. Pol. B Proc. Supp. 1 (2008) 167, Based on a presentation given at: "Myron Mathisson: his life, work, and influence on current research", Stefan Banach International Mathematical Center, Warsaw, Poland, 18 -- 20 October, 2007 [ pdf | gr-qc/0904.0362 | Acta Phys. Pol. B server ] ## Propagation equations for deformable test bodies with microstructure in extended theories of gravityDirk Puetzfeld, Yuri N. Obukhov
26 pages, Phys. Rev. D 76 (2007) 084025, DOI: 10.1103/PhysRevD.76.084025 [ pdf | gr-qc/0707.2819 | Phys. Rev. D. server ] ## PROCRUSTES: A computer algebra package for post-Newtonian calculations in General Relativity Dirk Puetzfeld
20 pages, 3 figures, Comp. Phys. Comm. 175 (2006) 497-508, DOI: 10.1016/j.cpc.2006.07.003 [ pdf | gr-qc/0610081 | Comp. Phys. Comm. Server] ## Cosmological nonlinear hydrodynamics with post-Newtonian correctionsJai-chan Hwang, Hyerim Noh, Dirk Puetzfeld
26 pages, J. Cosm. Astrop. Phys. 3 (2008) 10, DOI:10.1088/1475-7516/2008/03/010 [ pdf | astro-ph/0507085 | J. Cosm. Astrop. Phys. Server ] ## Beyond linearized cosmology Dirk Puetzfeld
4 pages, 2 figures, Proceedings of the PASCOS 2005 symposium, Gyeongju, Korea, May 30 - June 4 (2005), Eds. K. Choi, J.E. Kim, D. Son, AIP Conference Proceedings 805 (2005) 483-486, DOI: 10.1063/1.2149761 [ pdf | astro-ph/0509398 | Am. Inst. Phys. Server ] ## Prospects of non-Riemannian cosmology Dirk Puetzfeld
5 pages, 3 figures, Proc. of the 22nd Texas Symposium on Rel. Astrophysics, Stanford University, December (2004) [ pdf | astro-ph/0501231 | Stanford eConf Server] ## Status of non-Riemannian cosmology Dirk Puetzfeld
10 pages, 1 figure, Elsevier preprint style, Proceedings of the 6th UCLA Symposium on "Sources and Detection of Dark Matter and Dark Energy in the Universe", February 18-20, 2004, Marina del Rey, CA, USA, New Astronomy Reviews 49 (2005) 59-64, DOI: 10.1016/j.newar.2005.01.022 [ pdf | gr-qc/0404119 | New. Astron. Rev. Server ] ## Complementary constraints from FR IIb radio galaxies and X-ray gas mass fractions in clusters on non-standard cosmological models Dirk Puetzfeld, Martin Pohl, Zong-Hong Zhu
22 pages, 6 figures, aastex preprint style, Astrophys. J. 619 (2005) 657-666, DOI: 10.1086/426665 [ pdf | astro-ph/0407204 | Astrophys. J. Server] ## Testing non-standard cosmological models with supernovae Dirk Puetzfeld, Xuelei Chen
21 pages, 10 figures, IOP preprint style, Class. Quantum Grav. 21 (2004) 2703-2722, DOI: 10.1088/0264-9381/21/11/013 [ pdf | gr-qc/0402026 | Class. Quant. Grav. Server] ## A cosmological model in Weyl-Cartan spacetime: II. Magnitude-redshift relation Dirk Puetzfeld
23 pages, 5 figures, IOP preprint style, Class. Quantum Grav. 19 (2002) 4463-4482, DOI: 10.1088/0264-9381/19/16/316 [ pdf | gr-qc/0205052 | Class. Quant. Grav. Server ] ## A non-standard cosmological model Dirk Puetzfeld
1 page, Int. J. of Mod. Physics A Vol. 17 No. 20 (2002) 2772, DOI: 10.1142/S0217751X02011990 [ pdf | Int. J. Mod. Phys. A Server ] ## A cosmological model in Weyl-Cartan spacetime: I. Field equations and solutions Dirk Puetzfeld
20 pages, 2 figures, IOP preprint style, Class. Quantum Grav. 19 (2002) 3263-3280, DOI: 10.1088/0264-9381/19/12/310 [ pdf | gr-qc/0111014 | Class. Quant. Grav. Server ] ## A cosmological model in Weyl-Cartan spacetime Dirk Puetzfeld, Romualdo Tresguerres
19 pages, 5 figures, IOP preprint style, Class. Quantum Grav. 18 (2001) 677-693, DOI: 10.1088/0264-9381/18/4/308 [ pdf | gr-qc/0101050 | Class. Quant. Grav. Server ] ## An exact plane-fronted wave solution in metric-affine gravityDirk Puetzfeld
10 pages, LaTeX 2e, Invited lecture at a Conference in honour of Heinz Dehnen's 65th and Dietrich Kramer's 60th birthday." Held at CINVESTAV-IPN, Mexico City, 2-6 October 2000. To appear in: ``Exact solutions and scalar field in gravity: Recent Developments." A. Macias, J. Cervantes, and C. Laemmerzahl eds., Kluwer, Dordrecht (2001) to be published. [ pdf | gr-qc/0011116 ] ## Plane-fronted waves in metric-affine gravityAlberto Garcia, Alfredo Macias, Dirk Puetzfeld, Jose Socorro
20 pages, RevTeX preprint style, published in Physical Review D 62 (2000) 044021, DOI: 10.1103/PhysRevD.62.044021
[ pdf | gr-qc/0005038 | Phys. Rev. D Server ] ## theses## Building and testing cosmological models: From Friedmann to Weyl-CartanDirk Puetzfeld
175 pages, 28 figures, PhD. thesis, University of Cologne (2003), URN: urn:nbn:de:hbz:38-9664 [ pdf | abstract via URN | pdf via KUPS ] ## Exact solutions in metric-affine gauge theory of gravityDirk Puetzfeld
121 pages, 5 figures, Diploma thesis, University of Cologne (2000) [ pdf ] ## stuff that might be of interestShort exposition on the use of CA systems and cosmology (in german, appears in the RRZK report 2001) [ html | pdf ] |