This institute may be found at Strand in Central London, just north of the Thames (map).
Getting to the Strand Campus:
Temple (District and Circle lines): 2 minute walk. Charing Cross (Bakerloo and Northern lines): 10 minute walk, Embankment (District, Circle and Bakerloo lines): 10 minute walk, Waterloo (Jubilee, Northern, Bakerloo, Waterloo & City lines): 12 minute walk, Holborn (Central and Picadilly lines): 12 minute walk,Chancery Lane (Central line): use exit 4 - 15 minute walk.
Charing Cross: 9 minute walk. Waterloo: 12 minute walk. Waterloo East: 10 minute walk. Blackfriars: 12 minute walk.
Buses stopping outside the College: 1, 4, 26, 59, 68, 76, X68, 168, 171, 172, 176(24 hour), 188, 243 (24 hour), 341 (24 hour), 521, RV1.
For more information about public transportations in London, please visit http://www.tfl.gov.uk.
Found at least 20 result(s)
Regular Seminar Nick Dorey (DAMTP Cambridge)
at: 13:15 room G.01 | abstract: I will discuss recent progress in formulating superconformal quantum mechanics models which describe the (2,0) theory and N=4 super Yang-Mills in discrete light-cone quantisation. |
Regular Seminar Costis Papageorgakis (Queen Mary University)
at: 13:15 room G.01 | abstract: It is often said that soliton contributions to perturbative processes in QFT are exponentially suppressed by a form-factor. We will provide a derivation of this form-factor by studying the soliton-antisoliton pair-production amplitude. This reduces to the calculation of a matrix element in the quantum mechanics on the soliton moduli space. We will investigate the conditions under which the latter leads to suppression. Extending this framework to instanton-solitons in five-dimensional Yang-Mills theory leaves open the possibility that such contributions will not be suppressed. |
Regular Seminar Martin Wolf (University of Surrey)
at: 13:15 room G.01 | abstract: I will review recent work on the formulation of self-dual higher (categorified) gauge theory in six dimensions using twistor theory. |
Regular Seminar Bogdan Stefanski (City University)
at: 13:15 room G.01 | abstract: I will review how integrability can be used to understand the spectral problem (including massless modes) of Type IIB string theory on AdS3 x S3 x T4 with R-R flux. I will then show how integrability emerges in the dual CFT2. This provides arguably the first non-BPS test of the planar AdS3/CFT2 correspondence in the literature and gives strong evidence in identifying particular points in the moduli space of the dual theories. |
Regular Seminar Dalimil Mazac (Perimeter Institute)
at: 13:15 room G.01 | abstract: I will discuss conformal bootstrap for SCFTs with four supercharges (eight superconformal charges) between two and four dimensions in a unified language. The special cases of interest are (2,2) SCFTs in d=2, N=2 SCFTs in d=3, and N=1 SCFTs in d=4. I will show how a large class of superconformal blocks can be found from the Casimir differential equation. I will describe the numerical bounds arising from the two independent bootstrap equations of the four-point function involving a chiral field and its conjugate. The bound involves three kinks, one of which corresponds to the IR fixed point of the Wess-Zumino model, and the other two remain mysterious. |
Regular Seminar Yang-Hui He (City University)
at: 13:15 room G.01 | abstract: Inspired by the multiplicative nature of the Ramanujan modular discriminant, Delta, we consider physical realizations of certain multiplicative products over the Dedekind eta-function in two parallel directions: the generating function of BPS states in certain heterotic orbifolds and elliptic K3 surfaces associated to congruence subgroups of the modular group. We show that they are, after string duality to type II, the same K3 surfaces admitting Nikulin automorphisms. In due course, we will present some identities arising from q-expansions as well as relations to the sporadic Mathieu group M24. |
Regular Seminar Joan Simon (University of Edinburgh)
at: 13:15 room G.01 | abstract: Motivated by either condensed matter or quantum gravity holographic considerations, I will discuss some preliminary work on how to compute the time evolution in Renyi entropies in 2d CFTs in the large c limit for thermal states perturbed by localized primary operators. Time permitting, I will comment on the potential relation between this work and previous holographic calculations in the context of the EPR=ER conjecture. |
Regular Seminar George Papadopoulos (King's College)
at: 13:15 room G.01 | abstract: Is there a consistent patching for double manifolds? I shall demonstrate that the solution of the strong section condition leads to exact 3-form field strengths. I shall also prove that the consistency of the examples presented so far depends on the choice of the atlas, and so they are not general covariant. Then I shall suggest a new construction which resolves some of the puzzles and possibly specifies the appropriate spaces up to homotopy. |
Exceptional Seminar Dmitry Ponomarev (LMU (Munich))
at: 13:15 room K.0.16 | abstract: We classify the possible linear unfolded equations for propagating bosonic higher-spin tensor fields in AdS_3 backgrounds. Doing this we reproduce the existing topologically massive and new topologically massive (higher)-spin systems whose content we clarify. We find systems that generalise various critical gravities to higher-spins. |
Regular Seminar Juan Jottar (ETH (Zurich))
at: 13:15 room G.01 | abstract: We discuss entanglement and Renyi entropies in two-dimensional conformal field theories with extended symmetry algebras of W-type, in the semiclassical (large-c) limit. From the CFT perspective, the computation of these non-local observables involves the study of semiclassical conformal blocks in theories with additional conserved currents beyond the stress tensor. From an AdS perspective, the problem can be tackled using recent holographic proposals in terms of Wilson lines in the dual three-dimensional higher spin theories. We discuss non-trivial examples exhibiting the agreement between bulk and boundary computations. |
Triangular Seminar Ben Gripaios (Cambridge Cavendish)
at: 15:00 room SMinus2.23 | abstract: I discuss the quantization of a perfect fluid. This differs from textbook QFT, because of the presence of vortex modes, which map to an infinite collection of quantum mechanical free particles rather than harmonic oscillators. As a result, there is no Fock space and no S-matrix. I argue that there exists, nevertheless, a consistent effective field theory description, valid at large distances and times. |
Triangular Seminar Joe Conlon (Oxford)
at: 16:30 room SMinus2.23 | abstract: Galaxy clusters are the most efficient convertors of axion-like particles to photons in the universe. I discuss the physics and phenomenology of ALPs, and describe their astrophysical implications, with particular reference to the recently observed 3.5 keV X-ray line that is a candidate for a dark matter decay line. |
Regular Seminar Andres Collinucci (ULB, Brussels)
at: 13:15 room G.01 | abstract: F-theory paints a beautiful picture that relates gauge theories to purely geometric information, whereby the Dynkin diagrams of gauge groups come to life as 2-cycles of internal spaces. The caveat is that, such spaces are necessarily singular, and treating them sensibly requires resolving or deforming the singularities. Recently, my collaborator R. Savelli and I have proposed a new strategy that allows one to deal with singular spaces directly. It is based on Eisenbud’s so-called matrix factorisations. This remarkably simple concept has very deep connections to the mathematics of singularities. In this talk, I will review the basic notions needed to formulate the issues, assuming only standard knowledge of string theory. Then, after introducing our proposal, I will show examples of its applications, such as computations of chiral spectra for bound states of 7-branes. |
Regular Seminar Cristian Vergu (King's College)
at: 13:15 room G.01 | abstract: Light-like polygonal super-Wilson loops are dual to scattering amplitudes in planar N=4 super-Yang-Mills and enjoy an infinite-dimensional Yangian symmetry which extends the superconformal symmetry. However, this symmetry is anomalous. In this talk we will describe a super-Wilson loop on a smooth contour, which is free of UV divergences and on which the superconformal symmetry operators are not anomalous. We also study the action of level one Yangian generators on the one-loop expectation value of this super-Wilson loop. [This is work in progress with N.Beisert, D.Muller and J.Plefka] |
Regular Seminar Mukund Rangamani (Durham )
at: 13:15 room G.01 | abstract: CFTs at large central charge display some universal features which can be inferred from holography. Using these as a guide one can obtain some necessary conditions for a given CFT to admit a classical gravity dual. I will describe attempts to construct a large class of CFTs satisfying these conditions exploiting some technology of permutation orbifolds. Time permitting I will also outline some tests for the sufficiency of these conditions. |
Exceptional Seminar Karan Govil (Pennsylvania State Universiy)
at: 16:00 room S 5.20 | abstract: The algebras of higher spin symmetries in conformal field theories in four and six dimensions are not unique and have a richer structure due to the existence of infinite short multiplets besides the usual scalar and spinor. We will focus on recent results that show there exists a one parameter family (continuous of d=4 and discrete for d=6) of higher spin algebras and superalgebras, and give an explicit unitary representation for these algebras using quasiconformal methods. We will also discuss the implications of these results for the AdS5/CFT4 and AdS7/CFT6 higher spin holography. |
Regular Seminar Stefano Cremonesi (King's College)
at: 13:15 room G.01 | abstract: I will explain how to compute the Hilbert series that counts chiral operators parametrising the Coulomb branch of the moduli space of vacua of three-dimensional N=4 supersymmetric gauge theories. The formula has applications to Physics, such as to the study of infrared dualities in three dimensions and of string backgrounds with eight supercharges, as well as to Mathematics, where it provides a new way to characterise HyperKaehler cones as algebraic varieties. I will then show how the Coulomb branch of certain 3d N=4 generalised quiver gauge theories can be used to compute the Hilbert series of the moduli space of k G-instantons, for any simple Lie group G. The construction is alternative to the ADHM construction that is only available for classical groups G. |
Exceptional Seminar Pedro Vieira (Perimeter Institute)
at: 14:15 room S2.28 | abstract: TBA |
Exceptional Seminar Mathematics of String Theory Workshop Bridgeland Dimofte Fine Gross dela Ossa Keel Hollands Skinner Thomas (See Abstract for Details)
at: 9:00 room K2.31 | abstract: Workshop information and registration http://www.mth.kcl.ac.uk/~ss299/MOST/ |
Exceptional Seminar Mathematics of String Theory Workshop Bridgeland Dimofte Fine Gross dela Ossa Keel Hollands Skinner Thomas ()
at: 9:00 room K6.29 | abstract: Workshop homepage for information and registration http://www.mth.kcl.ac.uk/~ss299/MOST/ |