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Adam Pound06/02/2022, 08:00Adam PoundLectures
Gravitational wave astronomy: present and future
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Gravitational self-force theory -
Adam Pound06/02/2022, 15:00Adam PoundLectures
Perturbation theory in GR
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Small bodies and punctures
Point particles and mode-sum regularization Regularization via Green’s functions
Point particles beyond linear order -
Adam Pound06/02/2022, 15:55Adam PoundLectures
Geodesic motion in Kerr
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Perturbed motion in Kerr
Transient resonances -
Maria Haney06/02/2022, 17:15Maria HaneyLectures
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Maria Haney06/02/2022, 18:10Maria HaneyLectures
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Oleg Komoltsev06/02/2022, 20:00Student TalksStudent Talks
The rapid evolution of neutron-star astronomy in recent years is for the first time giving us empirical access to the physics of the cores of neutron-stars, the internal structure of which is determined by the equation of state (EoS) of strongly interacting matter. In this talk I demonstrate in a general and analytic way how high-density information about EoS of strongly interacting matter...
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Magdalena Eriksson06/02/2022, 20:20Student TalksStudent Talks
During inflation, quantum field fluctuations are placed in squeezed states which undergo quantum-to-classical transitions on super-Hubble scales, in the sense that the non-commutative parts of the fields then become small compared to their anti-commutative parts. An effective theory for the physics of the long-wavelength parts of quantum scalar fields in the super-Hubble regime is the...
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Jørgen Musaeus06/02/2022, 20:40Student TalksStudent Talks
In recent years a covariant 1/c-expansion of general relativity, known as non-relativistic gravity, has been developed. This new expansion has many interesting prospects but much is still unknown about it. One thing that remains unclear is what connection, if any, it has to the post-Newtonian approximation. So far, Non-relativistic gravity is believed to be a more general approximation that...
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Emil Have06/02/2022, 21:00Student TalksStudent Talks
I will discuss how the geometry of the asymptotic infinities of 4-dimensional Minkowski spacetime is captured by homogeneous spaces of the Poincaré group. In addition to the blowups of spatial (Spi) and timelike (Ti) infinities a la Ashtekar-Hansen, which are (pseudo-)carrollian geometries, this construction naturally leads to a novel space Ni that fibers over scri and is equipped with a...
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Adam Pound07/02/2022, 08:30Adam PoundLectures
Multiscale expansion of the field equations
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Results at 0PA order
Results at 1PA order -
Maria Haney07/02/2022, 15:00Maria HaneyLectures
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Maria Haney07/02/2022, 15:55Maria HaneyLectures
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David Kosower07/02/2022, 17:15David KosowerLectures
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David Kosower07/02/2022, 18:10David KosowerLectures
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Rasmus Strid07/02/2022, 20:00Student TalksStudent Talks
Motivated by higher spin scattering amplitudes in gravity, we review and compare the interactions of higher spin fields in different formalisms
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Aoibheann Margalit07/02/2022, 20:20Student TalksStudent Talks
Effective field theory (EFT) is a theory-agnostic approach to understanding how high-energy phenomena would manifest in our low-energy universe. It is an expansion in higher-dimension operators built out of light fields with unknown coefficients. These coefficients can either be constrained through experiment or by demanding consistency with theoretical expectations, such as causal wave...
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Francisco Duque07/02/2022, 20:40Student TalksStudent Talks
Ultracompact objects with photonspheres are known to mimic many observational features of black holes. It has been suggested that anomalous tidal heating or the presence of resonances in gravitational-wave signals would be a clear imprint of a surface or the absence of a horizon. Such claims and studies are all based on a frequency-domain analysis, assuming stationarity. In this talk, we will...
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Michèle Levi08/02/2022, 08:30Michèle LeviLectures
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Michèle Levi08/02/2022, 15:00Michèle LeviLectures
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Michèle Levi08/02/2022, 15:55Michèle LeviLectures
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Niels Obers08/02/2022, 17:15Niels ObersLectures
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Henrik Johansson08/02/2022, 18:10Henrik JohanssonLectures
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Han Shanzhong08/02/2022, 20:00Student TalksStudent Talks
Assuming any massless free-fields with spin higher than 1/2 are constructed by scalar fields (spin-0) and Dirac-Weyl fields (spin-1/2), we introduce a map between spin-2 massless free-fields (gravity fields) and Dirac-Weyl fields in spinor formalism, then associated Dirac-Weyl spinors that can live in certain spacetime are identified. Regarding them as basic units, other higher spin massless...
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Paolo Pichini08/02/2022, 20:20Student TalksStudent Talks
Quantum scattering amplitudes for massive matter have received new attention in connection to classical calculations relevant to gravitational-wave physics. Amplitude methods and insights are now employed for precision computations of observables needed for describing the gravitational dynamics of bound massive objects such as black holes. An important direction is the inclusion of spin...
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Gustav Jakobsen08/02/2022, 20:40Student TalksStudent Talks
The worldline quantum field theory (WQFT) formalism describes classical gravitational observables including spin effects up to quadratic order in the multipole expansion, and including finite-size corrections. The theory enjoys an N=2 worldline supersymmetry between spin and position degrees of freedom. Recently we have used the WQFT to compute gravitational observables at third...
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Michèle Levi09/02/2022, 08:30Michèle LeviLectures
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David Kosower09/02/2022, 15:00David KosowerLectures
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David Kosower09/02/2022, 15:55David KosowerLectures
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Alex Nielsen09/02/2022, 17:15Alex NielsenLectures
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