Lomonosov Moscow State University

ITMP Seminar "Disforming the Kerr metric"

ITMP Seminar
29 November 2021

Dear Colleagues,

We are pleased to announce that the next internal ITMP seminar will be held on Wednesday, Dec 1, at 18:00 (Moscow time). It will take place in ITMP, in person, room Г-725. It will be also possible to participate online via zoom


Speaker: Dr. Timothy Anson, ITMP

Title: Disforming the Kerr metric

Abstract: Starting from a recently constructed stealth Kerr solution of higher order scalar tensor theory, I will present disformal versions of the Kerr spacetime with a constant disformal factor and a regular scalar field. While the disformed metric has only a ring singularity and asymptotically is quite similar to Kerr, it is neither Ricci-flat nor circular. Non-circularity has far reaching consequences on the structure of the solution. In particular, I will discuss the properties of important hypersurfaces in the disformed spacetime: ergosphere, stationary limit and event horizon, and highlight the differences with the Kerr metric. I will also mention experimental signatures of these spacetimes.


If you want to join the seminar please register here before 14:00, December 1 here.

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