Bianca Dittrich

Bianca Dittrich's picture
Faculty

Areas of Research:
Mathematical Physics,
Quantum Gravity
Website: http://www.perimeterinstitute.ca/personal/bdittrich/
Phone: x7504

AFFILIATIONS

University of Waterloo and University of Guelph

PhD students who wish to be supervised by Perimeter Institute faculty normally apply through the PSI program. To apply directly to a PhD program, students should submit an application to the Physics and Astronomy Department at the University of Waterloo.

Students interested in pursuing an MSc degree should apply to Perimeter Institute's PSI program.

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

  • Early Researcher Award, 2014, Province of Ontario
  • Marie Curie Fellowship, 2008-09, European Union
  • Otto Hahn Medal for young scientists, 2007, Max Planck Society

Recent Publications

  • Bianca Dittrich, Marc Geiller, Flux formulation of loop quantum gravity: Classical framework, arXiv: 1412.3752
  • Bianca Dittrich, Sebastian Mizera, Sebastian Steinhaus, Decorated tensor network renormalization for lattice gauge theories and spin foam models, arXiv: 1409.2407
  • Bianca Dittrich, The continuum limit of loop quantum gravity - a framework for solving the theory, arXiv: 1409.1450
  • Bianca Dittrich, Wojciech Kaminski, Sebastian Steinhaus, Discretization independence implies non-locality in 4D discrete quantum gravity, arXiv: 1404.5288
  • Bianca Dittrich, Marc Geiller, A new vacuum for Loop Quantum Gravity, arXiv: 1401.6441
  • Bianca Dittrich, Jeff Hnybida, Ising Model from Intertwiners, arXiv: 1312.5646
  • Bianca Dittrich, Mercedes Martin-Benito, Sebastian Steinhaus, Quantum group spin nets: refinement limit and relation to spin foams, Phys. Rev. D 90, 024058 (2014), arXiv: 1312.0905
  • Bianca Dittrich, Sebastian Steinhaus, Time evolution as refining, coarse graining and entangling, arXiv: 1311.7565
  • Bianca Dittrich, Wojciech Kaminski, Topological lattice field theories from intertwiner dynamics, arXiv: 1311.1798
  • Bianca Dittrich, Mercedes Martín-Benito, Erik Schnetter, Coarse graining of spin net models: dynamics of intertwiners, New J. Phys. 15 (2013) 103004, arXiv: 1306.2987
  • 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, Class. Quant. Grav. 30 (2013) 205013, arXiv: 1304.5983
  • Bianca Dittrich, Philipp A Hoehn, Constraint analysis for variational discrete systems, J. Math. Phys. 54 (2013) 093505, 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, 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, From the discrete to the continuous - towards a cylindrically consistent dynamics, New J. Phys. 14 (2012) 123004, arXiv: 1205.6127
  • 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 [gr-qc]
  • 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 [gr-qc]
  • Bianca Dittrich, Philipp A. Hoehn, Canonical Simplicial Gravity, Class.Quant.Grav. 29 (2012) 115009, arXiv: 1108.1974 [gr-qc]
  • Benjamin Bahr, Bianca Dittrich, James P. Ryan, Spin foam models with finite groups, arXiv: 1103.6264 [gr-qc]
  • Benjamin Bahr, Bianca Dittrich, Sebastian Steinhaus, Perfect discretization of reparametrization invariant path integrals, Phys.Rev. D83 (2011) 105026, arXiv: 1101.4775 [gr-qc]
  • Benjamin Bahr, Bianca Dittrich, Song He, Coarse graining theories with gauge symmetries: the linearized case, New J.Phys. 13 (2011) 045009, arXiv: 1011.3667 [gr-qc]
  • Bianca Dittrich, James P. Ryan, Simplicity in simplicial phase space, Phys.Rev. D82 (2010) 064026, arXiv: 1006.4295 [gr-qc]
  • 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 [hep-th]
  • Bianca Dittrich, Philipp A. Hoehn, From covariant to canonical formulations of discrete gravity, Class. Quant. Grav. 27 (2010) 155001, arXiv: 0912.1817 [gr-qc]
  • Benjamin Bahr, Bianca Dittrich, Improved and Perfect Actions in Discrete Gravity, Phys.Rev. D80 (2009) 124030, arXiv: 0907.4323 [gr-qc]
  • Benjamin Bahr, Bianca Dittrich, Regge calculus from a new angle, New J.Phys. 12 (2010) 033010, arXiv: 0907.4325 [gr-qc]
  • Benjamin Bahr, Bianca Dittrich, (Broken) Gauge Symmetries and Constraints in Regge Calculus, Class.Quant.Grav. 26 (2009) 225011, arXiv: 0905.1670 [gr-qc]
  • Bianca Dittrich, Diffeomorphism symmetry in quantum gravity models, Adv. Sci. Lett. 2 (2009) 151, arXiv: 0810.3594 [gr-qc]
  • Bianca Dittrich, James P. Ryan, Phase space descriptions for simplicial 4d geometries, Class.Quant.Grav. 28 (2011) 065006, arXiv: 0807.2806 [gr-qc]
  • Bianca Dittrich, Simone Speziale, Area-angle variables for general relativity, New J.Phys. 10 (2008) 083006, arXiv: 0802.0864 [gr-qc]
  • 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 [gr-qc]
  • Bianca Dittrich, Laurent Freidel, Simone Speziale, Linearized dynamics from the 4-simplex Regge action, Phys.Rev. D76 (2007) 104020, arXiv: 0707.4513 [gr-qc]
  • 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/507106
  • 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/411142
  • 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/411141
  • 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/411140
  • 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/411139
  • 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/411138
  • 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 [gr-qc]

Seminars

  • Continuum limit and renormalization flow in (loop) quantum gravity, Radboud University Nijmegen, Jan 2015
  • Continuum limit in (loop) quantum gravity, DESY Hamburg, Seminar, Jan 2015
  • Quantum Space Time Engineering, U Rochester, math-phys/ q-optics seminar, Dec 2014
  • Quantum Space Time, Graduate Days Univ. Heidelberg, 15h invited lecture course, Oct 2014
  • The continuum limit of loop quantum gravity - A framework for solving the theory, Univ. Warsaw, seminar, Oct 2014
  • A new flux based representation for loop quantum gravity, Univ. Warsaw, seminar, Oct 2014
  • Perfect discretizations, Workshop: Geometric Methods in Classical and Quantum Lattice Systems, Potsdam, invited talk, Sep 2014
  • Quantum space time engineering, Workshop: Random Tensors, ESI, Vienna, Invited Talk, July 2014
  • New quantum representation for loop quantum gravity, CPT Marseille, seminar, July 2014
  • New Vacuum for Loop Quantum Gravity, MPI for Gravitational Physics, Potsdam, seminar, July 2014
  • Quantum Space TIme Engineering, Atlantic GR conference, University of New Brunswick, invited talk, May 2014
  • New vacuum and representation for Loop Quantum Gravity, Atlantic GR conference, University of New Brunswick, invited talk, May 2014
  • Quantum Space Time Engineering, APS meeting, Savannah, USA, invited talk, April 2014
  • Coarse graining and renormalization: the bottom up approach, Asymptotic Safety Online Seminar, Apr 2014
  • Constructing Quantum Space Time, COST meeting on Fundamental Problems in Quantum Physics, Weizmann Institute, Israel, invited talk, March 2014
  • A new vacuum for loop quantum gravity, International Loop Quantum Gravity Seminar (online seminar series), Feb 2014, http://relativity.phys.lsu.edu/ilqgs/
  • Spin foams as a continuum theory, Second EFI winter conference on canonical and covariant LQG, Tux, Austria, invited talk, Feb 2014
  • Diffeomorphism symmetry in the discrete and perfect discretizations, University of Waterloo, seminar, Jan 2014
  • Constructing a cylindrically consistent dynamics - building up a physical vacuum, PennState University, Oct 2013
  • Triangulation invariant models from intertwiner dynamics, PennState University, Oct 2013
  • Towards the continuum limit of spin foam and spin net models, Quantum Gravity in the Southern Cone VI, São Paulo, invited talk, Sep 2013
  • Where is canonical quantum gravity today?, Seminar on the Philosophical Foundations of Quantum Gravity, University of Illinois at Chicago, key note speaker, Sep 2013
  • The continuum limit of spin foams and spin nets, GR 20, Warsaw, invited talk, July 2013
  • 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 Warsaw, 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 Edinburgh, 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:14050119, New Vacuum and Representation For Loop Quantum Gravity, 2014-05-21, Quantum Gravity Day 2014
  • PIRSA:14040089, Quantum Spacetime Engineering, 2014-04-22, Renormalization Group Approaches to Quantum Gravity
  • PIRSA:14030021, 13/14 PSI - Quantum Gravity Review - Lecture 14, 2014-03-07
  • PIRSA:14030020, 13/14 PSI - Quantum Gravity Review - Lecture 13
  • PIRSA:14030019, 13/14 PSI - Quantum Gravity Review - Lecture 12
  • PIRSA:14030018, 13/14 PSI - Quantum Gravity Review - Lecture 11
  • PIRSA:14030017, 13/14 PSI - Quantum Gravity Review - Lecture 10, 2014-03-03
  • PIRSA:14020071, 13/14 PSI - Quantum Gravity Review - Lecture 9, 2014-02-28
  • PIRSA:14020070, 13/14 PSI - Quantum Gravity Review - Lecture 8, 2014-02-27
  • PIRSA:14020069, 13/14 PSI - Quantum Gravity Review - Lecture 7, 2014-02-26
  • PIRSA:14020068, 13/14 PSI - Quantum Gravity Review - Lecture 6, 2014-02-25
  • PIRSA:14020067, 13/14 PSI - Quantum Gravity Review - Lecture 5, 2014-02-24
  • PIRSA:14020064, 13/14 PSI - Quantum Gravity Review - Lecture 4, 2014-02-21
  • PIRSA:14020063, 13/14 PSI - Quantum Gravity Review - Lecture 3, 2014-02-20
  • PIRSA:14020062, 13/14 PSI - Quantum Gravity Review - Lecture 2, 2014-02-19
  • PIRSA:14020061, 13/14 PSI - Quantum Gravity Review - Lecture 1, 2014-02-18
  • PIRSA:14010112, Constructing Quantum Space Time, 2014-01-30,
  • PIRSA:13120048, From spin foams to anyons and back again - Joint Condensed Matter/Quantum Gravity Seminar, 2013-12-05, Quantum Gravity
  • PIRSA:13070079, Discrete Approaches - 3, 2013-07-25, Loops 13
  • PIRSA:13020058, 12/13 PSI - Quantum Gravity Review Lecture 15, 2013-02-15
  • PIRSA:13020057, 12/13 PSI - Quantum Gravity Review Lecture 14, 2013-02-14
  • PIRSA:13020056, 12/13 PSI - Quantum Gravity Review Lecture 13, 2013-02-13
  • PIRSA:13020055, 12/13 PSI - Quantum Gravity Review Lecture 12, 2013-02-12
  • PIRSA:13020054, 12/13 PSI - Quantum Gravity Review Lecture 11, 2013-02-11
  • PIRSA:13020051, 12/13 PSI - Quantum Gravity Review Lecture 10, 2013-02-08
  • PIRSA:13020050, 12/13 PSI - Quantum Gravity Review Lecture 9, 2013-02-07
  • PIRSA:13020049, 12/13 PSI - Quantum Gravity Review Lecture 8, 2013-02-06
  • PIRSA:13020048, 12/13 PSI - Quantum Gravity Review Lecture 7, 2013-02-05
  • PIRSA:13020047, 12/13 PSI - Quantum Gravity Review Lecture 6, 2013-02-04
  • PIRSA:13020044, 12/13 PSI - Quantum Gravity Review Lecture 5, 2013-02-01
  • PIRSA:13010092, 12/13 PSI - Quantum Gravity Review Lecture 4, 2013-01-31
  • PIRSA:13010091, 12/13 PSI - Quantum Gravity Review Lecture 3, 2013-01-30
  • PIRSA:13010090, 12/13 PSI - Quantum Gravity Review Lecture 2, 2013-01-29
  • PIRSA:13010089, 12/13 PSI - Quantum Gravity Review Lecture 1, 2013-01-28
  • 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