High Energy Physics News & Events

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NewFunFiCO network

A new staff exchange network - NewFunFiCO - was chosen for funding within the Horizon-MSCA-2021-SE-01 call. The network has nodes at Aveiro University (Portugal, coordinator), University of Valencia (Spain), Johann Wolfgang Goethe-Universitaet Frankfurt Am Main (Germany), Universidad Nacional Autonoma de Mexico (Mexico), Universidade Federal do Pará (Brazil) and the Chinese University of Hong Kong (China). The network will start on January 1st 2023 and have a lifetime of 4 years.

Questions on Quantum Gravity

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Speaker
Renate Loll (Radboud University)
Event date
Venue
Online (only)
Event type

I will sketch motivations, ambitions and challenges of quantum gravity, how we have got to where we are, and discuss promising current and future direction, focusing on nonperturbative quantum field-theoretic approaches. No expert knowledge on quantum gravity will be required.

A waveform catalogue for Proca star collisions

The detection of gravitational waves has been one of the most exciting scientific developments of the XXIst century. These detections are theory-driven, they rely on the existence of waveform libraries, which have been constructed for binary black holes and neutron stars. Gr@v members have collaborated on the construction of the first waveform catalogue for exotic compact objects, an effort led by former Gr@v member Nicolas Sanchis Gual (now at the U. Valencia).

Dynamical descalarization with a jump during black hole merger

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Speaker
Daniela Doneva (University of Tübingen)
Event date
Venue
Online (only) - Please, note the unusual time
Event type

The black hole merger in scalar-Gauss-Bonnet gravity can lead to dynamical descalarization this is a spontaneous release of the scalar
hair of the newly formed black hole. Depending on the exact form of the Gauss-Bonnet coupling function, the stable scalarized solutions

Constraints on dark matter from observations of neutron stars and their mergers

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Speaker
Violetta Sagun (University of Coimbra)
Event date
Venue
Hybrid Sala Sousa Pinto (Math dpt) and Zoom
Event type

Compact stars due to their enormous gravitational field can accumulate a sizable amount of dark matter in their interior. Depending on its nature, an accumulated dark matter may affect the properties of neutron stars in quite different ways. I will give an overview of the impact of dark matter on various observable properties of neutron stars, i.e.

Flavour and dark matter in a scoto/seesaw model

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Speaker
Henrique Câmara (Instituto Superior Tecnico)
Event date
Venue
Hybrid: Reitoria, Sala de Atos Académicos e Zoom
Event type

I will present our recent work (arXiv:2204.13605[hep-ph]) based on a hybrid type-II seesaw/scotogenic model supplemented with a discrete flavour symmetry where Cp is dynamically generated by the vacuum.

Testing General Relativity with black hole X-ray data

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Speaker
Cosimo Bambi (Fudan University)
Event date
Venue
Online (only)
Event type

The theory of General Relativity has successfully passed a large number of observational tests. The theory has been extensively tested in the weak-field regime with experiments in the Solar System and observations of binary pulsars.