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DTSTAMP:20260421T194858Z
SUMMARY:Particle Cosmology Seminar
DESCRIPTION:Speaker: Aron Kovacs\n \nWell-posed initial value formulation 
 of general effective field theories of gravity\nIn this talk\, I will show
  that all higher-derivative effective field theories (EFTs) of vacuum grav
 ity admit a well-posed initial value formulation when augmented by suitabl
 e regularising terms. These regularising terms can be obtained by field re
 definitions and do not affect the dynamics in the regime of validity of EF
 T. I will explain how our result applies to the quadratic\, cubic\, and qu
 artic truncations of the EFT of gravity and to various truncations of a si
 mple EFT of a scalar field. Finally\, I will also discuss some numerical r
 esults on the non-linear dynamics of this simple scalar field theory.
URL:https://www.imperial.ac.uk/events/203576/particle-cosmology-seminar-36/
DTSTART;TZID=Europe/London:20260313T120000
DTEND;TZID=Europe/London:20260313T130000
LOCATION:H503\, Huxley Building\, South Kensington Campus\, Imperial Colleg
 e London\, London\, SW7 2AZ\, United Kingdom
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