Directions

We are located on the Main Campus of City in Northampton Square (map)

Getting to the Strand Campus:

• By underground

Thea nearest tube stops are Farringdon, Angel, also nearby is Barbican

• By train

Farringdon (10 minutes walk) or King's Cross stations (20 minutes walk) have nearest main-line services

• By bus

Buses stopping outside the College: : 4, 19, 30, 38, 43, 55, 56, 63, 73, 153, 205, 214, 243, 274, 341, 394, 476.

Seminars at City, University of London

Found at least 20 result(s)

27.10.2015 (Tuesday)

tba

Regular Seminar Tobias Galla (Manchester)

 at: 16:00 City U.room B104 abstract:

21.10.2015 (Wednesday)

Algebras and Correlators

Triangular Seminar Sanjaye Ramgoolam (QMUL)

 at: 15:30 City U.room C314 abstract: **** POLYGON SEMINAR**** Permutation groups and related algebras have proved to be powerful tools for understanding the counting and correlators of gauge invariant operators in 1-Matrix and multi-matrix models. Mathematical structures such as Belyi maps underlying the mixing of trace structures have been uncovered and finite N effects have been encoded using Young diagram data. These results have found applications in studies of BPS, near-BPS and non-BPS operators in N=4 SYM and quiver gauge theories. I will review some of this work and describe some open problems.

20.10.2015 (Tuesday)

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Regular Seminar Steve Baigent (UCL)

 at: 16:00 City U.room B104 abstract:

13.10.2015 (Tuesday)

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Regular Seminar Nick Halmagyi (Jussieu)

 at: 16:00 City U.room B104 abstract:

06.05.2015 (Wednesday)

Topological strings and minimal models

Triangular Seminar Omar Foda (University of Melbourne)

 at: 15:30 City U.room AG08 abstract: I would like to explain, with emphasis on computational details, how one starts from the refined topological vertex, constructs a topological partition function, and chooses the parameters of the latter to obtain conformal blocks of Virasoro minimal models.

06.05.2015 (Wednesday)

Introduction to Topological Strings

Exceptional Seminar Omar Foda (University of Melbourne)

 at: 15:30 City U.room AG08 abstract: ps. Prof. Foda will give an introduction to topological string theory and minimal models in the first hour or so before launching into his more technical topic.

11.02.2015 (Wednesday)

Higher Spins and Strings

Triangular Seminar Matthias Gaberdiel (ETH Zurich)

 at: 16:00 City U.room B103 abstract: The conjectured relation between higher spin theories on anti de-Sitter (AdS) spaces and weakly coupled conformal field theories is reviewed. I shall then outline the evidence in favour of a concrete duality of this kind, relating a specific higher spin theory on AdS3 to a family of 2d minimal model CFTs. Finally, I shall explain how this relation fits into the framework of the familiar stringy AdS/CFT correspondence.

10.02.2015 (Tuesday)

Conformal symmetry and smoothness

 at: 16:00 City U.room B104 abstract: I shall explain why there is symmetry enhancement near black hole and brane horizons. I shall also present some applications which include the classification of AdS backgrounds in supergravity.

21.01.2015 (Wednesday)

Polygon Seminar: Microscopic description of black holes in string theory

Triangular Seminar Sameer Murthy (King's)

 at: 15:30 City U.room BG03 abstract: I will discuss the idea that a black hole in string theory is made up of a large number of microscopic constituents. For a class of black holes and black strings with extended supersymmetry, one has an exact counting formula for the number of states. I will sketch the idea and derivation of some of these formulas. I will then discuss applications to the AdS_2/CFT_1 and the AdS_3/CFT_2 correspondences.

18.11.2014 (Tuesday)

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Regular Seminar Tomasz Lukowski (Oxford)

 at: 16:15 City U.room B103 abstract:

11.11.2014 (Tuesday)

Harmony of scattering amplitudes

Regular Seminar Gabriele Travaglini (QMUL)

 at: 16:15 City U.room c307 abstract:

09.05.2014 (Friday)

Quiver Gauge Theories and the Moduli Space of Instantons

Exceptional Seminar Amihay Hanany (Imperial)

 at: 16:30 City U.room Birley abstract: Instantons appear in many problems of theoretical physics. Quiver gauge theories are a rising subject due to its natural emergence in perturbative open string theories. The talk will discuss features of these two topics and how one can use quiver gauge theories to solve the long standing problem of finding the moduli space of k G instantons on C^2, where G is any simple gauge group, including the non-simply laced cases.

26.11.2013 (Tuesday)

TBA

Regular Seminar Reinhold Egger (Düsseldorf)

 at: 16:00 City U.room CG02 abstract:

19.11.2013 (Tuesday)

TBA

Regular Seminar Anne-Christine Davis (DAMTP, Cambridge)

 at: 16:00 City U.room CG04 abstract:

12.11.2013 (Tuesday)

TBA

Regular Seminar Benoit Vicedo (Hertfordshire)

 at: 16:00 City U.room CG02 abstract:

29.10.2013 (Tuesday)

On conformal higher spin models

 at: 16:00 City U.room CG05 abstract:

22.10.2013 (Tuesday)

Exact representations of Susceptible-Infectious-Removed (SIR) epidemic dynamics on networks

Regular Seminar Kieran Sharkey (Liverpool)

 at: 16:00 City U.room CG05 abstract: The majority of epidemic models fall into two categories: 1) deterministic models represented by differential equations and 2) stochastic models which can be evaluated by simulation. In this presentation I will discuss the precise connection between these models. Until recently, exact correspondence was only established in situations exhibiting large degrees of symmetry or for infinite populations. I will consider SIR dynamics on finite static contact networks. I will give an overview of two provably exact deterministic representations of the underlying stochastic model for tree-like networks. These are the message passing description of Karrer and Newman and my pair-based moment closure representation. I will discuss the relationship between the two representations and the relative merits of both.

15.10.2013 (Tuesday)

TBA

Regular Seminar Joan Simon (Edinburgh)

 at: 16:00 City U.room CG05 abstract:

09.10.2013 (Wednesday)

Higher Spin correlators

Triangular Seminar Alday Fernando (Oxford)

 at: 15:00 City U.room AG07 abstract: I will discuss the three-point correlator of two protected scalar operators and one higher spin twist-two operator in N = 4 SYM, in the limit of large spin. This structure constant can be extracted from the OPE of the four-point correlator of protected scalar operators. Based on the OPE structure, symmetry arguments and intuition from the available perturbative results, it is possible to predict the structure constant at all loops in perturbation theory. Furthermore, this allows also to propose an expression for the all loops four-point correlator in a particular limit.

09.10.2013 (Wednesday)

An Update on Moonshine

Triangular Seminar Miranda Cheng (Paris VI)

 at: 16:30 City U.room AG07 abstract: In 2010, Eguchi--Ooguri--Tachikawa observed an unexpected relation between K3 elliptic genus and the sporadic group M24. In this talk I'll briefly review the recent developments on the topic of moonshine. In particular I will describe a more general relation between mock modular forms and finite groups, using Niemeier lattices as the starting point and including the M24 observation as a special case. I will also discuss various approaches in attempting to understand these mysterious relations, focusing on the study of compactification of heterotic strings on K3 surfaces. This talk will be based on joint work with Duncan--Harvey and with Dong--Harrison--Kachru--Whalen--Wrase.