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First European Physical Society Conference on Gravitation

19–21 Feb 2019
"Sapienza" University, Phys. Dept. Marconi
Europe/Rome timezone

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Session

Beyond Einstein's Gravity

BeyoGra
20 Feb 2019, 09:00
Aula Amaldi ("Sapienza" University, Phys. Dept. Marconi)

Aula Amaldi

"Sapienza" University, Phys. Dept. Marconi

Rome

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  1. 95. String theory
    Prof. Marika Taylor (University of Southampton )
    20/02/2019, 09:00
    talk
  2. 96. Echoes of modified gravity
    Prof. Vitor Cardoso (Instituto Superior Tecnico Lisboa)
    20/02/2019, 09:35
    talk
  3. 97. Massive Gravity
    Prof. Claudia de Rham (Imperial College London)
    20/02/2019, 10:10
    talk
  4. 15. Nonlocal quantum field theories
    Dr Fabio Briscese (SUSTech)
    20/02/2019, 11:15
    General Relativity and Cosmology
    talk

    It has been realized that nonlocality might be a key ingredient for the formulation of a quantum renormalizable theory of gravitation. In facts, nonlocal gravitational models are earning growing interest in the scientific community, since they are super-renormalizable or even finite at quantum level. In this seminar I will introduce nonlocal field theories and discuss their general features....

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  5. 7. Ergoregion instability of exotic compact objects
    Elisa Maggio (University of Rome La Sapienza)
    20/02/2019, 11:32
    Beyond Einstein's Gravity
    talk

    Gravitational-wave astronomy can give us access to structure of black holes, potentially probing microscopic corrections at the horizon scale. Some quantum-gravity models of exotic compact objects replace the event horizon by a reflective surface. Spinning horizonless compact objects with these properties may be unstable against an ergoregion instability.
    In this talk we investigate a model...

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  6. 8. Black holes in an effective field theory extension of general relativity
    Masashi Kimura (Instituto Superior Tecnico, Universidade de Lisboa)
    20/02/2019, 11:49
    Beyond Einstein's Gravity
    talk

    Effective field theory methods suggest that some rather-general extensions of General Relativity include higher-order curvature corrections, with small coupling constants. In this talk, we discuss black hole solutions in such a framework. First, we construct spherically symmetric black hole solutions and study gravitational perturbation around them. Despite the higher-order operators of the...

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  7. 34. Corpuscular gravity: from cosmology to black holes
    Roberto Casadio (BO)
    20/02/2019, 12:06
    Beyond Einstein's Gravity
    talk

    Corpuscular gravity has originated from the observation that a black hole can be viewed as a Bose-Einstein condensate at the critical point, with a large occupation number of (soft off-shell) gravitons and no central singularity. This innovative approach moves away from the semi-classical picture of quantum field theory on curved backgrounds and considers self-gravitating systems as truly...

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  8. 4. Dark sector evolution in Horndeski models
    Dr Francesco Pace (University of Manchester)
    20/02/2019, 12:23
    Beyond Einstein's Gravity
    talk

    Despite the good agreement between theoretical predictions and observational results, the cosmological constant is not a satisfactory explanation for the accelerated expansion of the universe. Hence an intense theoretical effort has been devoted to the study of models beyond General Relativity plus a cosmological constant.

    In this talk, I will present ongoing work on the study of the...

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