Invitation to the seminar — Compact objects in gravity theories

  • hlavní
  • 12.05.2023
On the 12th of May 2023 will be organized the seminar about the "Compact objects in gravity theories". The event will happen on the premises of the Institute of physics in the Director´s meeting room (2nd floor, room 2019) and will be hosted by B. Bakopoulos.

Abstract: We analyse in all generality beyond Horndeski theories of shift symmetry in a static and spherically symmetric spacetime. By introducing four auxiliary functions, we write the field equations in a particularly compact form. We show that assuming additionally parity symmetry renders the system directly integrable giving multiple families of black-hole solutions. These have typically an asymptotically-flat Reissner-Nordstrom behaviour, and emerge in the presence of a canonical kinetic term for the scalar field. In the absence of parity symmetry, we present a general method which allows us to integrate the field equations by choosing the form of only one coupling function and an auxiliary quantity. This method leads to asymptotically flat and AdS black hole solutions with differing properties. We finally discuss disformal transformations within this context as a means of obtaining wormhole and black hole solutions in different theories.

Should you have any questions about the event itself, do not hesitate to reach out to us on this following e-mail address: We are looking forward to your participation.

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