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A Riemann-Hilbert approach to Einstein field equations

Presented by: 
Cristina Camara Instituto Superior Técnico, Lisboa
Date: 
Tuesday 13th August 2019 - 14:30 to 15:00
Venue: 
INI Seminar Room 1
Abstract: 
The field equations of gravitational theories in 4 dimensions are non-linear PDE's that are difficult to solve in general. By restricting to a subspace of solutions that only depend on two space-time coordinates, alternative approaches to solving those equations become available. We present here the Riemann-Hilbert approach, looking at the dimensionally reduced field equations as an integrable system associated to a certain Lax pair, whose solutions can be obtained by factorizing a so called monodromy matrix. This approach allows for the explicit construction of solutions to the non-linear gravitational field equations using simple complex analytic methods.
University of Cambridge Research Councils UK
    Clay Mathematics Institute London Mathematical Society NM Rothschild and Sons