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General relativity: from geometry to amplitudes


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27th June 2016 to 1st July 2016
Joel Fine
Kirill Krasnov
Donal O'Connell

Organisers: Professor Kirill K Krasnov (University of Nottingham), Professor Joel Fine (Université Libre de Bruxelles) and Dr Donal O'Connell (University of Edinburgh)

Workshop Theme

Gravity is a dynamical theory of metrics on space- time that follows from the standard Einstein-Hilbert action principle. However, there are indications from scattering amplitudes, string theory and twistor theory that this may not be the only or even the best way to understand the full structure of the theory. Important insights and simplifications arise by reformulating 4d gravity as a theory of connections on space-time rather than metrics. The manifolds of G2 holonomy suggest a link between 3d, 4d and 7d geometrical structures. One can alternatively formulate gravity and its amplitudes in (ambi-) twistor space leading to unexpected formulae and structures. The scattering amplitudes of general relativity appear to be a double copy of those in Yang-Mills theory. Furthermore, perturbative calculations of GR amplitudes do not use a space-time Lagrangian and indeed their connection to the standard Einstein-Hilbert action remains obscure. The aim of this workshop is to bring together experts working on these different aspects of gravity to obtain a more coherent understanding.

Deadline for applications: 25th March 2016

Apply now

Please note members of Cambridge University are welcome to turn up and sign in as a non-registered attendee on the day(s) during the workshop and attend the lecture(s). Please note that we cannot provide you with any support including name badge, meals or accommodation.

In addition to visiting the INI, there are multiple ways in which you can participate remotely.



Registration Only
  • Registration Package: £239
  • Student Registration Package: £189

The Registration Package includes admission to all seminars, lunches and refreshments on the days that lectures take place (Monday - Friday), wine reception and formal dinner, but does not include other meals or accommodation.

Registration and Accommodation
  • Accommodation Package: £568

The Accommodation Package includes a registration fee, bed and breakfast accommodation from the evening of Sunday 26th June to breakfast on Saturday 2nd July 2016, together with refreshments during the days that lectures take place (Monday - Friday). Accommodation is in single study bedrooms with shared facilities.

Formal Dinner Only
  • Formal Dinner: £50

Participants on the Accommodation Package or Registration Package, including organisers and speakers, are automatically included in this event. For all remaining participants who would like to attend, such as programme participants, the above charge will apply.


Accommodation in single study bedrooms with shared facilities, breakfast and lunches are provided at Wolfson Court, adjacent to the Institute.



Lunch will be served at Wolfson Court in the Cafeteria from 12:30 to 13:30 on days that lectures take place.

  • Those issued with a blue Institute door entrance card can add money onto the card via the Porters' Lodge at Wolfson Court
  • Other participants must purchase their meal using their dining card via the Porters' Lodge (forms can be found on the registration desk or at the Porters' Lodge)

Evening Meal

Participants are free to make their own arrangements for dinner.


Formal Dinner

The Formal Dinner will take place on Thursday 30th June at Emmanuel College, Old Library . Participants on the Accommodation Package or Registration Package, including organisers and speakers, are automatically included in this event.

University of Cambridge Research Councils UK
    Clay Mathematics Institute London Mathematical Society NM Rothschild and Sons