 10:00  11:00 Tea & Coffee in 39/40 AA 04
 The venue for the morning session is 22 AA 04.
 11:00  11:50
Gerard Watts (KCL)
Generalising temperature in quantum and classical field theories
 11:50  12:40 Louise Anderson
(Imperial)
Generalised geometry and consistent truncations
 12:40  14:00 Lunch
 The venue for the afternoon session is 22 AA 04.
 14:00  14:50 Charles Young (Hertfordshire)
Affine Gaudin models and hypergeometric integrals of motion
 14:50  15:40 Ines Aniceto (Jagiellonian)
From asymptotics to exact results in physics and mathematics
 15:40  16:10 Tea & Coffee in 39/40 AA 04
 16:10  17:00 Roberto Sisca (Surrey)
The universal geometry of heterotic vacua
Seminar Programme
 Gerard Watts (King's College, University of London)
 Generalising temperature in quantum and classical field theories
 I will talk about fairly recent ideas on generalising thermal ensembles for integrable quantum and classical field theories in 1 space and 1 time dimension and (if there is time) present some results on nonequilibrium dynamics in classical generalised Gibbs ensembles for the SinhGordon model. The results will be based on arXiv:1712.05687 with A. Bastianello, B. Doyon and T. Yoshimura.
 Louise Anderson (Imperial College, University of London)
 Generalised geometry and consistent truncations
 Consistent truncations of gravitational theories is a subject with a long history, and the classification of all possible consistent truncations is still an open problem. The language of generalised geometry offers a convenient way to study consistent truncations of supergravity by reformulating the problem in terms of a geometrical one. In this talk, I will introduce the framework of generalised geometry, and show how this can be used to find some new examples of manifolds with suitable properties to admit consistent truncations of supergravity.
 Seminar 2 by Louise Anderson
 Charles Young (University of Hertfordshire)
 Affine Gaudin models and hypergeometric integrals of motion
 To any KacMoody algebra, one can associate a quantum Gaudin model. For algebras of finite type, the Bethe ansatz for these models has led to some rather deep mathematical results: notably, isomorphisms between the commutative algebra of Hamiltonians (called the Gaudin or Bethe algebra) and algebras of functions on spaces of “opers” (roughly, certain ordinary differential operators) for the Langlands dual algebra. One would like analogous results for affinetype Gaudin models, since they are closely related (in various ways) to integrable quantum field theories. In arXiv:1804.01480 and work in progress, Sylvain Lacroix, Benoit Vicedo and I introduce a notion of “affine opers” and show that the functions on the space of such opers take the form of certain hypergeometrictype integrals. We conjecture that these integrals yield eigenvalues of a new hierarchy of higher affine Gaudin Hamiltonians, and furthermore make a conjecture about the form of such Hamiltonians. I will describe this conjecture, and give some supporting evidence coming from GKOtype coset constructions of the Virasoro and W3 algebras.
 Seminar 3 by Charles Young
 Ines Aniceto (Jagiellonian University)
 From asymptotics to exact results in physics and mathematics
 In order to study the weakly coupled regime of some given quantum theory we often make use of perturbative expansions of the physical quantities of interest. But such expansions are often divergent, and defined only as asymptotic series. This divergence is connected to the existence of nonperturbative contributions, i.e. instanton effects not captured by a perturbative analysis. The same asymptotic behaviour is also seen in a wide range of mathematical problems, such as the perturbative study of nonlinear systems described by differential of finite difference equations.

The theory of resurgence perfectly captures this perturbative/nonperturbative connection and its consequences. Moreover, it allows us to construct a full nonperturbative solution from perturbative data. In this talk, I will analyse the essential role of resurgence theory, coupled to exponentially accurate numerical methods, to go beyond the perturbative results and obtain (analytically and numerically) nonperturbative data. I will exemplify how these techniques can be applied to a wide range of problems, from observables in gauge and string theories to asymptotic solutions of NLODEs.
 Seminar 4 by Ines Aniceto
 Roberto Sisca (University of Surrey)
 The universal geometry of heterotic vacua

We are interested in heterotic vacua at large radius. These vacua have parameters which are coordinates for a related geometry, known as the moduli space. Our interest is in how the moduli space geometry is modified by α' corrections.

We do this by considering a “universal geometry”, which is a fibration of the heterotic vacua over their moduli space. This is a surprisingly useful thing to do: it simplifies and unifies results recently found with more conventional methods, just as special relativity did for electromagnetism. It is also a powerful computational tool, which we have used to elegantly derive new results about the quantum corrected moduli space geometry.
Practical Information
Local Venue and Travel Information
Trains. There is a fast train from London (Waterloo) to Guildford which takes about 40 minutes.
See the south west trains schedule and the Unversity of Surrey
travel information website for further train and bus information.
It is a 15 minute walk from the train station to the University of Surrey
(see this
university googlemap).
Exit the train station towards Guildford town centre. Turn left and walk along Walnut Tree Close for about 5 minutes. Take the first nontrivial left and walk along the bridge over the railway to reach the
university campus. Turn right and walk up the hill with the lake on your right. The AA building is next to Senate House at the top of this hill.
Parking. The university has a limited number of visitors parking spots, which should be requested in advance by contacting Andrea Prinsloo (a.prinsloo@surrey.ac.uk). There is also a large public car park adjacent to the university campus (its location is shown on this
parking googlemap).
Venues. On arrival, please go to 39/40 AA 04 (on the 4th floor of the AA building) for coffee and snacks, which will be available from 10:00 onwards. The venue for the morning and afternoon sessions is 22 AA 04. The AA building is shown on this University of Surrey Stag Hill
campus map. Lunch will take place on campus.
After the meeting, participants are most welcome to join us for drinks and/or dinner at the White House Pub and Restaurant (8 High Street, GU2 4AJ) in Guildford town centre.
Please contact Andrea Prinsloo (a.prinsloo@surrey.ac.uk) in 29b AA 04 or Alessandro Torrielli (a.torrielli@surrey.ac.uk) in 33 AA 04 for any further local information.
Funding Information

The meeting is partially supported by a London Mathematical Society Joint Research Groups grant.
Limited funds are available to help with travel expenses of participants with no other source of funding. We hope that this will encourage postgraduate students and postdocs to attend the meeting.
Please email Clare Dunning (t.c.dunning@kent.ac.uk) in advance if you would like to apply for support.
Participants
 List of Registered Participants
 Andrea Prinsloo (Surrey)
 Alessandro Torrielli (Surrey)
 Clare Dunning (Kent)
 Gerard Watts (KCL)
 Louise Anderson (Imperial)
 Charles Young (Hertfordshire)
 Ines Aniceto (Jagiellonian)
 Roberto Sisca (Surrey)
 Istvan Szecsenyi (City)
 Andrea Fontanella (Surrey)
 Carlo Meneghelli (Oxford)
 Benoit Vicedo (York)
 Jan Gutowski (Surrey)
 Steffen Krusch (Kent)
 Neal Carr (Kent)
 Aimilios Pagouropoulos (KCL)
 Paul Cook (KCL)
 Martin Wolf (Surrey)
 Joakim Strömwall (Surrey)
 Anthony Ashmore (Oxford)
 Paul Skerritt (Surrey)
 Lorenzo Raspollini (Surrey)
 Menika Sharma (City)
 Jock McOrist (Surrey)

Go to the Department of Mathematics, University of Surrey home page.