Michael Grefe.
Welcome to my homepage
Department Physik


Conference and Workshop Presentations
[17]  ETN Proposal: Probing the Universe With High Energy Particles.
APPEC gets organised for Horizon2020, 27 – 28 February 2014, Laboratoire APC, Paris, France.
[16]  Antiproton Limits on Decaying Gravitino Dark Matter.
TAUP 2013: 13th International Conference on Topics in Astroparticle and Underground Physics, 8 – 13 September 2013, Asilomar Conference Grounds, Pacific Grove, California, USA.
[15]  Gravitino Dark Matter.
Exotic Physics with Neutrino Telescopes 2013, 3 – 5 April 2013, Centre de Physique des Particules de Marseille, Marseille, France.
[14]  Cosmic-Ray Constraints on Unstable Gravitino Dark Matter.
TeV Particle Astrophysics 2012, 10 – 13 December 2012, Tata Institute of Fundamental Research, Mumbai, India.
[13]  Gravitino Dark Matter with Broken R-Parity.
7th MultiDark Consolider Workshop, 19 – 20 November 2012, Institut de Física d'Altes Energies, Barcelona, Spain.
[12]  Cosmic-Ray Constraints on Unstable Gravitino Dark Matter.
UNILHC 2012: 2nd ITN School on Unification in the era of LHC, 27 August – 5 September 2012, IFIC, València, Spain.
[11]  Indirect Searches for Gravitino Dark Matter.
PLANCK 2012: From the Planck Scale to the Electroweak Scale, 28 May – 1 June 2012, Warsaw, Poland.
[10]  Indirect Searches for Gravitino Dark Matter.
TAUP 2011: 12th International Conference on Topics in Astroparticle and Underground Physics, 5 – 9 September 2011, München, Germany.
[9]  Indirect Searches for Gravitino Dark Matter.
IDMS 2011: Workshop on Indirect Dark Matter Searches, 14 – 17 June 2011, DESY, Hamburg, Germany.
[8]  Neutrino Signals from Dark Matter Decay.
Horiba International Conference: COSMO/CosPA 2010, 27 September – 1 October 2010, The University of Tokyo, Tokyo, Japan.
[7]  Neutrino Signals from Dark Matter Decay.
The Dark Matter Connection: Theory and Experiment, 17 – 21 May 2010, The Galileo Galilei Institute for Theoretical Physics, Florence, Italy.
[6]  Neutrino Signals from Unstable Dark Matter.
DESY Theory Workshop 2009: Collider Phenomenology, 29 September – 2 October 2009, DESY, Hamburg, Germany.
[5]  Neutrino Signals from Unstable Dark Matter.
NIJMEGEN09: 3rd International Summer School on Astroparticle Physics, 19 – 28 August 2009, Nijmegen, The Netherlands.
[4]  Neutrino Signals from Unstable Gravitino Dark Matter.
DPG Frühjahrstagung 2009, 9 – 13 March 2009, Ludwig-Maximilians-Universität München, München, Germany.
[3]  Neutrino Signals from Gravitino Dark Matter with Broken R-Parity.
DESY Theory Workshop 2008: Dark Matter at the Crossroads, 29 September – 2 October 2008, DESY, Hamburg, Germany.
[2]  Neutrino Signals from Gravitino Dark Matter with Broken R-Parity.
3. Kosmologietag, 8 – 9 May 2008, Universität Bielefeld, Bielefeld, Germany.
[1]  Neutrino Signals from Gravitino Dark Matter Decays.
ENTApP: Dark Matter Visitor's Program, 25 – 29 February 2008, DESY, Hamburg, Germany.

Invited Talks
[6]  Antiproton Limits on Decaying Gravitino Dark Matter.
Particle Theory Journal Club, 13 June 2013, Rudolf Peierls Centre for Theoretical Physics, University of Oxford, Oxford, United Kingdom.
[5]  Antiproton Limits on Decaying Gravitino Dark Matter.
Seminario de Física Teórica, 22 May 2013, Universidad Complutense de Madrid, Madrid, Spain.
[4]  Gravitino Dark Matter with Broken R-Parity.
IFT Seminar, 5 November 2012, Instituto de Física Teórica UAM/CSIC, Madrid, Spain.
[3]  Gravitino Dark Matter with Bilinear R-Parity Violation.
IFIC's Seminar, 21 June 2012, Instituto de Física Corpuscular CSIC/Universitat de València, València, Spain.
[2]  Instabile Gravitinos als Dunkle Materie.
Festveranstaltung des Departments Physik der Universität Hamburg, 1 February 2012, Universität Hamburg, Hamburg, Germany.
[1]  Dunkle Materie und Teilchenphysik.
Weihnachtliche Festveranstaltung des Departments Physik der Universität Hamburg, 17 December 2008, Universität Hamburg, Hamburg, Germany.

Doctoral Thesis Defense
[1]  Unstable Gravitino Dark Matter – Prospects for Indirect and Direct Detection.
Theoretisch-Physikalisches Seminar, 6 July 2011, Universität Hamburg, Hamburg, Germany.

Other Talks
[4]  Supergravity in the Jordan Frame.
Werkstattseminar: Teilchen, Strings und frühes Universum, 11 January 2011, DESY / Universität Hamburg, Hamburg, Germany.
[3]  Gauge Mediation.
Werkstattseminar: Teilchen, Strings und frühes Universum, 15 June 2010, DESY / Universität Hamburg, Hamburg, Germany.
[2]  Decaying Gravitino Dark Matter.
Werkstattseminar: Teilchen, Strings und frühes Universum, 28 April 2009, DESY / Universität Hamburg, Hamburg, Germany.
[1]  Supersymmetric GUTs.
Werkstattseminar: Teilchen, Strings und frühes Universum, 4 November 2008, DESY / Universität Hamburg, Hamburg, Germany.