PACTS 2018: Particle, Astroparticle and Cosmology Tallinn Symposium

Session

Gravity

18 Jun 2018, 10:00

Conference Hall (Estonian Academy of Sciences)

82. Black holes as brains: Holographic neural networks with area-law entropy and exponentially enhanced memory capacity

Prof. Georgi Dvali

18/06/2018, 10:00

TBA

75. David and Goliath: black hole superradiance

Prof. Vitor Cardoso

18/06/2018, 10:30

Superradiant-related phenomena are common manifestations across a wide range of topics. I will review some of these manifestations with special emphasis on astrophysical applications. In particular, energy extraction from black holes and compact stars are promising mechanisms to constrain dark matter candidates, and have observational consequences, both for gravitational-wave observatories and...

51. Testing the nature of compact objects with gravitational waves

Prof. Paolo Pani

18/06/2018, 11:00

Gravitational wave (GW) astronomy allows us for unprecedented tests of the nature of dark compact objects. In this context, I will discuss two signatures of new physics at the horizon scale: GW “echoes” in the postmerger ringdown phase of a binary coalescence, and finite-size effects of exotic compact objects that affect the inspiral premerger phase. In the first case, the ringdown wave-form...

66. Gravity with more or less variables

Prof. Roberto Percacci

18/06/2018, 11:30

I will review various formulations of gravity, their pros and cons. Some are just different off shell extensions of Einstein's theory, others are physically inequivalent. Certain formulations naturally suggest ways of unifying gravity with all the other interactions. I will review what little is known of such unified theories.