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Bianca Dittrich

Bianca Dittrich's picture
Faculty

Area of Research:
Quantum Gravity
Website: http://www.perimeterinstitute.ca/personal/bdittrich/
Phone: x7504

Positions Held

  • since 2012 University of Waterloo, Adjunct Professor
  • since 2011 University of Guelph, Adjunct Professor
  • 2009-2012 Max Planck Institute for Gravitational Physics, Potsdam, Max Planck Research Group Leader
  • 2008-2009 Universiteit Utrecht, Marie Curie Fellow
  • 2005 -2008 Perimeter Institute, Postdoctoral Research Fellow

Awards

  • Marie Curie Fellowship, 2008-09, European Union
  • Otto Hahn Medal for young scientists, 2007, Max Planck Society

Recent Publications

  • Valentin Bonzom, Bianca Dittrich, Bubble divergences and gauge symmetries in spin foams, arxiv: 1304.6632
  • Valentin Bonzom, Bianca Dittrich, Dirac's discrete hypersurface deformation algebras, arxiv: 1304.5983
  • Bianca Dittrich, Philipp A Hoehn, Constraint analysis for variational discrete systems, arxiv: 1303.4294
  • Bianca Dittrich, Frank Hellmann, Wojciech Kaminski, Holonomy Spin Foam Models: Boundary Hilbert spaces and Time Evolution Operators, Class.Quant.Grav. 30 (2013) 085005, arxiv: 1209.4539
  • Bianca Dittrich, James P. Ryan, On the role of the Barbero-Immirzi parameter in discrete quantum gravity, Class.Quant.Grav. 30 (2013) 095015, arxiv: 1209.4892
  • Benjamin Bahr, Bianca Dittrich, Frank Hellmann, Wojciech Kaminski, Holonomy Spin Foam Models: Definition and Coarse Graining, Phys.Rev. D87 (2013) 044048, arxiv: 1208.3388
  • Bianca Dittrich, From the discrete to the continuous - towards a cylindrically consistent dynamics, New J. Phys. 14 (2012) 123004, arxiv: 1205.6127
  • Bianca Dittrich, Carlos Guedes, Daniele Oriti, On the space of generalized fluxes for loop quantum gravity, Class.Quant.Grav. 30 (2013) 055008, arxiv: 1205.6166
  • Bianca Dittrich, How to construct diffeomorphism symmetry on the lattice, PoS (QGQGS 2011) 012, arxiv: 1201.3840
  • Bianca Dittrich, Frank C. Eckert, Towards computationial insights into the large-scale structure of spin foams, J. Phys. Conf. Ser. 360 (2012) 012004, arxiv: 1111.0967
  • Bianca Dittrich, Sebastian Steinhaus, Path integral measure and triangulation independence in discrete gravity, Phys.Rev. D85 (2012) 044032, arxiv: 1110.6866
  • Bianca Dittrich, Frank C. Eckert, Mercedes Martin-Benito, Coarse graining methods for spin net and spin foam models, New J.Phys. 14 (2012) 035008, arxiv: 1109.4927
  • Bianca Dittrich, Philipp A. Hoehn, Canonical Simplicial Gravity, Class.Quant.Grav. 29 (2012) 115009, arxiv: 1108.1974
  • Benjamin Bahr, Bianca Dittrich, James P. Ryan, Spin foam models with finite groups, arxiv: 1103.6264
  • Benjamin Bahr, Bianca Dittrich, Sebastian Steinhaus, Perfect discretization of reparametrization invariant path integrals, Phys.Rev. D83 (2011) 105026, arxiv: 1101.4775
  • Benjamin Bahr, Bianca Dittrich, Song He, Coarse graining theories with gauge symmetries: the linearized case, New J.Phys. 13 (2011) 045009, arxiv: 1011.3667
  • Bianca Dittrich, James P. Ryan, Simplicity in simplicial phase space, Phys.Rev. D82 (2010) 064026, arxiv: 1006.4295
  • Aristide Baratin, Bianca Dittrich, Daniele Oriti, Johannes Tambornino, Non-commutative flux representation for loop quantum gravity, Class. Quant. Grav. 28 (2011) 175011, arxiv: 1004.3450
  • Bianca Dittrich, Philipp A. Hoehn, From covariant to canonical formulations of discrete gravity, Class. Quant. Grav. 27 (2010) 155001, arxiv: 0912.1817
  • Benjamin Bahr, Bianca Dittrich, Improved and Perfect Actions in Discrete Gravity, Phys.Rev. D80 (2009) 124030, arxiv: 0907.4323
  • Benjamin Bahr, Bianca Dittrich, Regge calculus from a new angle, New J.Phys. 12 (2010) 033010, arxiv: 0907.4325
  • Benjamin Bahr, Bianca Dittrich, (Broken) Gauge Symmetries and Constraints in Regge Calculus, Class.Quant.Grav. 26 (2009) 225011, arxiv: 0905.1670
  • Bianca Dittrich, Diffeomorphism symmetry in quantum gravity models, Adv. Sci. Lett. 2 (2009) 151, arxiv: 0810.3594
  • Bianca Dittrich, James P. Ryan, Phase space descriptions for simplicial 4d geometries, Class.Quant.Grav. 28 (2011) 065006, arxiv: 0807.2806
  • Bianca Dittrich, Simone Speziale, Area-angle variables for general relativity, New J.Phys. 10 (2008) 083006, arxiv: 0802.0864
  • Bianca Dittrich, Thomas Thiemann, Are the spectra of geometrical operators in Loop Quantum Gravity really discrete?, J.Math.Phys. 50 (2009) 012503, arxiv: 0708.1721
  • Bianca Dittrich, Laurent Freidel, Simone Speziale, Linearized dynamics from the 4-simplex Regge action, Phys.Rev. D76 (2007) 104020, arxiv: 0707.4513
  • Bianca Dittrich, Johannes Tambornino, Gauge invariant perturbations around symmetry reduced sectors of general relativity: Applications to cosmology, Class. Quant. Grav. 24 (2007) 4543-4586, arxiv: gr-qc/0702093
  • Bianca Dittrich, Johannes Tambornino, A perturbative approach to Dirac observables and their space-time algebra, Class. Quant. Grav. 24 (2007) 757-784, arxiv: gr-qc/0610060
  • Bianca Dittrich, Partial and Complete Observables for Canonical General Relativity, Class.Quant.Grav. 23 (2006) 6155-6184, arxiv: gr-qc/0507106
  • Bianca Dittrich, Renate Loll, Counting a black hole in Lorentzian product triangulations, Class. Quant. Grav. 23 (2006) 3849-3878, arxiv: gr-qc/0506035
  • Bianca Dittrich, Thomas Thiemann, Testing the Master Constraint Programme for Loop Quantum Gravity V. Interacting Field Theories, Class. Quant. Grav. 23 (2006) 1143-1162, arxiv: gr-qc/0411142
  • Bianca Dittrich, Thomas Thiemann, Testing the Master Constraint Programme for Loop Quantum Gravity IV. Free Field Theories, Class. Quant. Grav. 23 (2006) 1121-1142, arxiv: gr-qc/0411141
  • Bianca Dittrich, Thomas Thiemann, Testing the Master Constraint Programme for Loop Quantum Gravity III. SL(2,R) Models, Class.Quant.Grav. 23 (2006) 1089-1120, arxiv: gr-qc/0411140
  • Bianca Dittrich, Thomas Thiemann, Testing the Master Constraint Programme for Loop Quantum Gravity II. Finite Dimensional Systems, Class.Quant.Grav. 23 (2006) 1067-1088, arxiv: gr-qc/0411139
  • Bianca Dittrich, Thomas Thiemann, Testing the Master Constraint Programme for Loop Quantum Gravity I. General Framework, Class. Quant. Grav. 23 (2006) 1025-1066, arxiv: gr-qc/0411138
  • Bianca Dittrich, Partial and complete observables for Hamiltonian constrained systems, Gen. Rel. Grav. 39 (2007) 1891-1927, arxiv: gr-qc/0411013
  • Bianca Dittrich, Renate Loll, A Hexagon model for 3-D Lorentzian quantum cosmology, Phys.Rev. D66 (2002) 084016, arxiv: hep-th/0204210
  • Benjamin Bahr, Bianca Dittrich, Breaking and restoring of diffeomorphism symmetry in discrete gravity, XXV Max Born Symposium: The Planck Scale, arxiv: 0909.5688

Seminars

  • Towards the continuum limit of spin foams and spin nets: renormalization flow in background independent theories, Quantum Gravity in Paris, invited talk, March 2013
  • Coarse graining spin nets and spin foams: first results, AEI Potsdam, seminar, Jan 2013
  • Coarse graining spin nets and spin foams: first results, Workshop: The search for quantum gravity: CDT and friends, Nijmegen, invited talk, Dec 2012
  • Coarse graining: towards a cylindrically consistent dynamics, International Loop Quantum Gravity Seminar (online seminar series), Nov 2012, http://relativity.phys.lsu.edu/ilqgs/
  • Canonical dynamics from holonomy spin foams, Group 29 Conference Tianjin, invited talk, Aug 2012
  • From the discrete to the continuum -- towards a cylindrically consistent dynamics, ITP Universiteit Utrecht, seminar, May 2012
  • From the discrete to the continuum -- towards a cylindrically consistent dynamics, Albert Einstein Institute Potsdam, seminar, May 2012
  • Why spin foams are lattice gauge theories and why they are not, Workshop: Quantum gravity in Paris, LPT, invited talk, March 2012
  • Towards the many particle regime of quantum gravity models: baby spin foams and nets, Albert Einstein Institute, Potsdam, seminar, Dec 2011
  • Spin foams made very easy, Freie Universitaet Berlin, seminar, Nov 2011
  • Towards the many particle regime of quantum gravity models: baby spin foams and nets, Workshop: Gravity as thermodynamics, Trieste, invited talk, Sep 2011
  • Diffeomorphism symmetry, constraints and discretization independence in discrete gravity, Equadiff conference, Loughbourough, invited talk, Aug 2011
  • Spin foam and spin net models, Summer school Quantum information meets statistical mechanic, El Escorial, invited lecture, Jul 2011
  • Towards a large scale limit of (quantum gravity) models: baby spin foams and nets, Loops '11, Madrid, plenary talk, May 2011
  • Dynamics and diffeomorphism symmetry in discrete quantum gravity, Spring meeting of the DPG, Karlsruhe, invited talk, Mar 2011
  • Coarse graining and diffeomorphism symmetry, Workshop: From discrete to continuum spacetime in lattice QG and GFT, LPT Paris, invited talk, Mar 2011
  • Coarse graining , perfect actions and diffeomorphism symmetry, 3rd Quantum Gravity and Quantum Geometry School, Zakopane, invited lecture, Mar 2011
  • Dynamics and diffeomorphism symmetry in discrete quantum gravity, Workshop: Higher gauge theory topological qft and quantum gravity, Lisbon, invited talk, Feb 2011
  • Diffeomorphism symmetry in quantum gravity, GR 19, Mexico City, invited talk, Jul 2010
  • Quantum Space Time, IMPRSchool, Bollmannsruh, invited lecture, Jun 2010
  • Diffeomorphism symmetry and triangulation independence in discrete gravity, Workshop: Open Problems in Loop Quantum Gravity, Zakopane, invited lecture, Mar 2010
  • Complete observables: Introduction and perturbative framework, Univ. of Warsaw, lecture, Jan 2010
  • Diffeomorphism symmetry and perfect actions in discrete gravity, Univ. of Edinburgh, seminar, Jan 2010
  • Canonical kinematics and dynamics for simplicial geometries, Univ. of Warsaw, seminar, Jan 2010
  • Diffeomorphism symmetry and perfect actions in discrete gravity, Univ. of Warsaw, seminar, Jan 2010
  • Diffeomorphism symmetry and perfect actions in discrete gravity, Univ. Mainz, seminar, Dec 2009
  • From discretized actions to discretized constraints, CPT Marseille, seminar, Nov 2009
  • Diffeomorphism symmetry and discreteness in quantum gravity, Loops 09, Beijing, plenary talk, Aug 2009,
  • The fate of diffeomorphism symmetry in quantum gravity models, Emergent gravity IV, Vancouver, invited talk, Aug 2009
  • Quantum gravity - problems and prospects, Univ. Essen-Duisberg, seminar, Jul 2009
  • In search for diffeomorphism symmetry, Max Born Symposium: Physics at the Planck Scale, Wroclaw, contributed talk, Jul 2009
  • Diffeomorphism symmetry and discreteness, Workshop: Black Holes and Loop Quantum Gravity, Valencia, invited talk, Mar 2009
  • Diffeomorphism symmetry in discrete quantum gravity, ENRAGE Young Quantum Gravity Meeting, Imperial College, talk, Jan 2009
  • PIRSA:13020058, 12/13 PSI - Quantum Gravity Review Lecture 15, 2013-02-15, 12/13 PSI - Quantum Gravity Review
  • PIRSA:13020057, 12/13 PSI - Quantum Gravity Review Lecture 14, 2013-02-14, 12/13 PSI - Quantum Gravity Review
  • PIRSA:13020056, 12/13 PSI - Quantum Gravity Review Lecture 13, 2013-02-13, 12/13 PSI - Quantum Gravity Review
  • PIRSA:13020055, 12/13 PSI - Quantum Gravity Review Lecture 12, 2013-02-12, 12/13 PSI - Quantum Gravity Review
  • PIRSA:13020054, 12/13 PSI - Quantum Gravity Review Lecture 11, 2013-02-11, 12/13 PSI - Quantum Gravity Review
  • PIRSA:13020051, 12/13 PSI - Quantum Gravity Review Lecture 10, 2013-02-08, 12/13 PSI - Quantum Gravity Review
  • PIRSA:13020050, 12/13 PSI - Quantum Gravity Review Lecture 9, 2013-02-07, 12/13 PSI - Quantum Gravity Review
  • PIRSA:13020049, 12/13 PSI - Quantum Gravity Review Lecture 8, 2013-02-06, 12/13 PSI - Quantum Gravity Review
  • PIRSA:13020048, 12/13 PSI - Quantum Gravity Review Lecture 7, 2013-02-05, 12/13 PSI - Quantum Gravity Review
  • PIRSA:13020047, 12/13 PSI - Quantum Gravity Review Lecture 6, 2013-02-04, 12/13 PSI - Quantum Gravity Review
  • PIRSA:13020044, 12/13 PSI - Quantum Gravity Review Lecture 5, 2013-02-01, 12/13 PSI - Quantum Gravity Review
  • PIRSA:13010092, 12/13 PSI - Quantum Gravity Review Lecture 4, 2013-01-31, 12/13 PSI - Quantum Gravity Review
  • PIRSA:13010091, 12/13 PSI - Quantum Gravity Review Lecture 3, 2013-01-30, 12/13 PSI - Quantum Gravity Review
  • PIRSA:13010090, 12/13 PSI - Quantum Gravity Review Lecture 2, 2013-01-29, 12/13 PSI - Quantum Gravity Review
  • PIRSA:13010089, 12/13 PSI - Quantum Gravity Review Lecture 1, 2013-01-28, 12/13 PSI - Quantum Gravity Review
  • PIRSA:12110051, Coarse graining: towards a cylindrically consistent dynamics, 2012-11-27, International Loop Quantum Gravity Seminar
  • PIRSA:12100100, Is spacetime fundamentally discrete?, 2012-10-24, Experimental Search for Quantum Gravity 2012
  • PIRSA:12020142, Coarse graining spin nets with tensor networks, 2012-02-09, Workshop: Computational Methods at Perimeter
  • PIRSA:10030115, Geometro-kinematics and dynamics in a discrete setting, 2010-03-25, Quantum Gravity
  • PIRSA:10030027, Diffeomorphism symmetry, triangulation independence and constraints in discrete gravity, 2010-03-24, Quantum Gravity
  • PIRSA:10030026, Implications of background independence for quantum gravity, 2010-03-23, Quantum Gravity
  • PIRSA:07120030, Introduction to Quantum Gravity, 2007-12-06, Quantum Gravity
  • PIRSA:07050019, A Hamiltonian framework for cosmological perturbations to any order, 2007-05-01, Cosmology & Gravitation
  • PIRSA:06110046, Approximate observables, 2006-11-28, International Loop Quantum Gravity Seminar
  • PIRSA:04100037, Status of the Master Constraint Programme, 2004-10-30, Workshop on Quantum Gravity in the Americas: Status and future directions