Dr Andreas Recknagel
Telephone: +44 020 7848 2244
Email: andreas.recknagel@kcl.ac.uk
Office: S4.10, Strand Building, Strand Campus
Title: Reader in Theoretical Physics
Biography
Dr Andreas Recknagel gained his PhD from Bonn under the supervision of Professor Werner Nahm. He had postdoctoral positions in Swansea, the Max Planck institute in Leipzig and The Albert Einstein institute in Potsdam before joing in King's as a lecturer in 2000.
Research Interests
Andreas' research is mainly concerned with quantum field theory in two dimensions, in particular with conformal field theories and their applications to string theory and branes. He is also interested in the relation of non-commutative geometry to quantum field theory.
A conformally invariant quantum field theory is a physical system with an extremely large (infinite-dimensional) symmetry group, which makes it possible to compute many quantities of interest exactly, and to analyse such a field theory with tools from various branches of mathematics. Conformal field theories on surfaces with boundaries seem to have a particularly rich mathematical structure; at the same time, they have found rather direct applications in condensed matter physics (like the Kondo effect in three dimensions), and they provide the tools for a quantitative description of D-branes (non-perturbative string theory objects discovered only recently). One can use abstract methods from conformal field theory on surfaces with boundaries to construct D-branes for a large class of string models and to determine their properties. It turns out that often these branes cannot be viewed as classical objects ("membranes" in space-time), but rather behave as if their world-volume were a non-commutative (a quantised) space.
Selection of Publications
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A. Recknagel, V. Schomerus, "D-branes in Gepner models", Nucl. Phys. B531 (1998) 185-225, hep-th/9712186
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A. Recknagel, V. Schomerus, "Boundary deformation theory and moduli spaces of D-branes", Nucl. Phys. B545 (1999) 233-282, hep-th/9811237
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A. Recknagel, D. Roggenkamp, V. Schomerus, "On relevant boundary perturbations of unitary minimal models", Nucl. Phys. B588 (2000) 552-564 hep-th/0003110
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A.Yu. Alekseev, A. Recknagel, V. Schomerus, "Non-commutative world-volume geometries: branes on SU(2) and fuzzy spheres", J. High Energy Phys. 9909 (1999) 023, hep-th/9908040
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A.Yu. Alekseev, A. Recknagel, V. Schomerus, "Brane dynamics in background fluxes and non-commutative geometry", J. High Energy Phys. 0005 (2000) 010, hep-th/0003187
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A. Recknagel, "Branes, boundary CFT and non-commutativity", contribution to the 4th Annual European TMR Conference on Integrability, Nonperturbative Effects and Symmetry in Quantum Field Theory, Paris, France, 7-13 Sep 2000. jhep-server
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M.R. Gaberdiel, A. Recknagel, G.M.T. Watts, "The conformal boundary states for SU(2) at level 1", Nucl. Phys. B626 (2002) 344-362 hep-th/0108102
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M.R. Gaberdiel, A. Recknagel, "Conformal boundary states for free bosons and fermions", J. High Energy Phys. 0111 (2001) 016, hep-th/0003187
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A. Recknagel, "Permutation branes", J. High Energy Phys. 0304 (2003) 041, hep-th/0208119
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H. Enger, A. Recknagel, D. Roggenkamp, "Permutation branes and linear matrix factorisations", hep-th/0508053