# Group Seminar

During the term our group seminar takes place Wednesdays at 4 pm in room SR 02.729. Speakers in the group seminar are external researchers who are visiting our group as well as group members who present ongoing research projects. The current schedule of our group seminars can be found below.

## Group seminars SS 2014

Title | Time | Room | Speaker |

"The Large-Volume Limit of a Quantum Tetrahedron is a Quantum Harmonic Oscillator" | Wed, 16 Apr 16:00-17:30 |
SR 02.729 | Prof. John Schliemann Universität Regensburg |

"Regge state-sum models of quantum gravity" | Wed, 14 May 16:00-17:30 |
SR 02.729 | Dr. Aleksandar Mikovic Lusófona University and GFM - University of Lisbon |

"A Larger State Space for LQG" |
Wed, 21 May 16:00-17:30 |
SR 02.729 | Suzanne Lanéry IQG, FAU Erlangen |

"Turaev-Viro amplitudes from 2+1 Loop Quantum Gravity" |
Wed, 4 Jun 16:00-17:30 |
SR 02.729 | Dr. Daniele Pranzetti IQG, FAU Erlangen |

"Towards the fundamental spectrum of Quantum Yang-Mills Theory (Master Colloquium)" |
Wed, 25 Jun 16:00-17:30 |
SR 02.729 | Klaus Liegener IQG, FAU Erlangen |

"Gaussian measures and representations of the holonomy-flux algebra" | Mon, 22 Sep 10:00-11:00 |
SR 02.729 | Stefan Nekovar IQG FAU Erlangen |

"Effective formulations for (canonical) Quantum Theories" |
Mon, 22 Sep 11:00-12:00 |
SR 02.729 | Suddhasattwa Brahma Pennsylvania State University |

## Group seminars WS 2013/14

Title | Time | Room | Speaker |

"Topological parameters in gravity" |
Wed, 9 Oct 14:00-15:30 |
SR 02.729 | Dr. Sandipan Sengupta Raman Research Institute, Bangalore, India |

"General covariant foundations of quantum theory: The general boundary formulation" |
Wed, 23 Oct 16:30-18:00 |
SR 02.729 | Prof. Robert Oeckl Centro de Ciencias Matemáticas, UNAM Morelia, Mexico |

"Symmetry Reducing Loop Quantum Gravity" |
Wed, 30 Oct 16:30-18:00 |
SR 02.729 | Maximillian Hanusch Universität Paderborn |

"Cosmology with group field theory condensates" |
Wed, 13 Nov 16:30-17:30 |
SR 02.729 | Dr. Steffen Gielen Perimeter Institute |

"Deformed Phase Space for 3d gravity" |
Tue, 19 Nov 12:30-13:30 |
SR 02.729 | Dr. Maïté Dupuis University of Waterloo |

"Gauge Symmetric Higher derivative theories" |
Wed, 20 Nov 14:15-15:45 |
SR 02.779 (!) | Biswajit Paul S.N.Bose National Centre for Basic Sciences, Kolkata, India |

"Null Twisted Geometry" |
Wed, 4 Dec 16:30-17:30 |
SR 02.729 | Mingyi Zhang |

"Exact evaluations of coherent spin networks and spin foams" | Thu, 5 Dec 14:30-15:45 |
SR 01.683 (!) | Jeff Hnybida Perimeter Institute |

"The quantization of submanifold embeddings" |
Fri, 6 Dec 12:30-14:00 |
SR 02.779 (!) | Dr. Jochen Zahn Universität Wien |

"Refinement limit of spin net / spin foam models with quantum groups" |
Mon, 9 Dec 11:00-12:00 |
SR 02.729 | Sebastian Steinhaus Perimeter Institute |

"Nonperturbative Renormalization Group approaches to quantum gravity" |
Tue, 10 Dec 12:15-13:45 |
SR 00.732 (!) | Dr. Astrid Eichhorn Perimeter Institute for Theoretical Physics |

"Mode decomposition and Fourier analysis of physical fields in homogeneous cosmology" | Mon, 16 Dec 11:00-12:00 |
SR 02.729 | Dr. Zhirayr Avetisyan MPI Leipzig |

"Locality in Causal Sets" |
Mon, 16 Dec 13:30-14:30 |
SR 02.729 | Lisa Glaser Nils Bohr Institute |

"Classically Consistent Theories of Interacting Spin-2 Fields" |
Wed, 18 Dec 16:30-18:00 |
SR 02.729 | Angnis Schmidt-May Stockholm University |

"What is the hydrogen atom of quantum field theory" |
Thu, 16 Jan 17:00-18:30 |
SR 01.332 (!) | Prof. Michael Thies IQG, FAU Erlangen |

"Geometry of 4-valent spin networks with spin 1/2 (Bachelorkolloquium)" | Mon, 3 Feb 15:00-16:00 |
SR 02.729 | Henning Stumpf FAU IQG |

"Semiclassical perturbation theory within loop quantum gravity (Masterkolloquium)" |
Mon, 3 Feb 16:00-17:00 |
SR 02.729 | David Winnekens FAU IQG |

## Group seminars SS 2013

Title | Time | Room | Speaker |

"Dynamical evaporation of quantum horizons" |
Wed, 17 Apr 16:00-17:00 |
SR 02.729 | Dr. Daniel Pranzetti Max-Planck-Instistute for Gravitational Physics, Potsdam |

"Unbroken Discrete Supersymmetry" |
Wed, 24 Apr 16:00-17:00 |
SR 02.729 | Dr. Gerhart Seidl |

"Relational Evolution of Observables for Hamiltonian-Constrained Systems" |
Wed, 15 May 16:00-17:00 |
SR 02.729 | Prof. Jerzy Lewandowski University of Warsaw |

"Tensor operators for the Lorentz group in (2+1) loop quantum gravity" |
Wed, 19 Jun 16:00-17:00 |
SR 02.729 | Giuseppe Sellaroli University of Waterloo |

"Tensor operators in LQG" |
Wed, 26 Jun 16:00-17:00 |
SR 02.729 | Dr. Florian Girelli University of Waterloo |

## Group seminars WS 2012/13

Title | Time | Room | Speaker |

"Multimetric cosmology and structure formation" |
Wed, 21 Nov 16:00-17:30 |
Übungsraum 5, Department Mathematik, Cauerstr. 11 | Dr. Manuel Hohmann Tartu University |

"Complete quantization of an inflationary scenario with scalar perturbations" |
Wed, 21 Nov 17:30-18:30 |
SR 02.729 | Mikel Fernández Méndez Instituto de Estructura de la Materia - CSIC |

"Topics in LQC" |
Wed, 5 Dec 17:00-18:30 |
SR 02.729 | Miguel Campiglia Institute for Gravitation and the Cosmos, Pennstate University |

"Shape Dynamics" |
Wed, 19 Dec 17:00-18:30 |
SR 02.729 | Dr. Tim Koslowski University of New Brunswick, Fredericton, Canada |

"Transition amplitude in Dipole Cosmology: first order calculations" | Tue, 22 Jan 12:00-13:00 |
SR 02.779 | Marcin Kisielowski University of Warsaw |

"From Finslerian time measures to Finsler geometric gravity" |
Tue, 22 Jan 13:00-14:00 |
SR 02.779 | Christian Pfeifer Universität Hamburg |

"Symmetric Subsets of the LQG Configuration Space" |
Mon, 28 Jan 17:00-18:00 |
SR 02.729 | Prof. Christian Fleischhack Universität Paderborn |

"Quantum Mechanics in the Polymer Particle Representation" | Fri, 8 Feb 11:00-12:00 |
SR 02.729 | Thorsten Reichert IQG, Uni Erlangen |

"Manifestly gauge-invariant cosmological perturbation theory" | Wed, 27 Mar 14:00-15:00 |
SR 02.729 | Thomas Zilker IQG Erlangen |

## Group seminars SS 2012

Title | Time | Room | Speaker |

"Ab initio calculations in the 5-nucleon system" | Tue, 17 Apr 16:00-17:30 |
SR 02.729 | Prof. Hartmut M. Hofmann FAU Erlangen |

"Quantum Field Theory on Quantum Bianchi Spacetimes" |
Wed, 2 May 16:00-17:30 |
SR 02.729 | Andrea Dapor University of Warsaw |

"Feynman graphs and Spin Foams" |
Thu, 3 May 16:00-17:30 |
SR 02.729 | Prof. Jerzy Lewandowski University of Warsaw |

"Plebanski sectors of spin-foam models" | Wed, 30 May 16:00-17:30 |
SR 02.729 | Dr. Jonathan Engle Florida Atlantic University |

"Solving the Euclidean Scalar Constraints by Spin-Foam Methods" |
Thu, 31 May 12:15-13:45 |
SR 02.729 | Antonia Zipfel FAU Erlangen |

"The twistorial structure of spinfoam transistion amplitudes" |
Mon, 4 Jun 16:00-17:30 |
SR 02.729 | Wolfgang Wieland CPT Marseille |

"Cartan waywiser geometry and its application to the standard model" |
Tue, 5 Jun 15:00-16:30 |
SR 02.729 | Dr. Hans Westmann Perimeter Institute |

"Modified Plebanski actions and ghost-free massive gravity" |
Wed, 13 Jun 16:00-17:30 |
SR 02.729 | Dr. Simone Speziale CPT Marseille |

"A local Hamiltonian for spherically symmetric gravity coupled to a scalar field" |
Wed, 20 Jun 14:00-15:30 |
SR 02.729 | Prof. Jorge Pullin Louisiana State University |

"Discrete Symmetries in Covariant LQG" |
Wed, 20 Jun 16:00-17:30 |
SR 02.729 | Dr. Edward Wilson-Ewing CPT Marseille |

"Loop quantization of scalar-tensor gravity and its cosmological application" |
Thu, 28 Jun 12:00-13:30 |
SRTL 307 | Prof. Yongge Ma Beijing Normal University |

"Inhomogeneous Universe in LQG" | Thu, 12 Jul 18:00-19:30 |
SR 02.729 | Dr. Emanuele Alesci & Dr. Francesco Cianfrani FAU Erlangen |

"Cartan Geometrodynamics" | Thu, 16 Aug 15:30-17:00 |
SR 02.729 | Dr. Derek Wise FAU Erlangen |

"General relativity on observer space" |
Wed, 22 Aug 16:00-17:30 |
SR 02.729 | Dr. Steffen Gielen Perimeter Institute |

"Black hole complementarity controversy: Firewall or not?" |
Tue, 18 Sep 14:00-15:30 |
SR 02.729 | Dr. Dong-han Yeom |

## Group seminars WS 2011/12

Title | Time | Room | Speaker |

"Constraint Rescaling in Refined Algebraic Quantisation: A study including open algebras" |
Tue, 15 Nov 20:00-21:30 |
SR 02.729 | Eric Martinez-Pascual University of Nottingham |

"Asymptotics of Spinfoam Amplitude on Simplicial Manifold" |
Tue, 22 Nov 16:00-17:30 |
SR 02.729 | Dr. Muxin Han CPT Marseille |

"Chern-Simons Theory, Vassiliev- Kontsevich Invariant, and Spinfoam Quantum Gravity" |
Wed, 23 Nov 16:00-17:30 |
SR 02.729 | Dr. Muxin Han CPT Marseille |

"Superstrings, higher gauge theory, and division algebras" |
Wed, 23 Nov 18:00-19:30 |
SR 02.729 | John Huerta Australian National University |