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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

Displaying all lectures given by: Silke Weinfurtner


PIRSA:19010062  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Application of the black hole-fluid analogy: identification of a vortex flow through its characteristic waves
Speaker(s): Silke Weinfurtner
Abstract: Black holes are like bells; once perturbed they will relax through the emission of characteristic waves. The frequency spectrum of these waves is independent of the initial perturbation and, hence, can be thought of as a `fingerprint' of the black hole. Since the 1970s scientists have considered the... read more
Date: 10/01/2019 - 2:30 pm

PIRSA:15080030  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Hydrodynamic simulations of rotating and non-rotating black holes
Speaker(s): Silke Weinfurtner
Abstract: In 1981 Bill discovered an analogy between the propagation of fields in the vicinity of astrophysical black holes and the that of small excitations in fluids. He postulated that this analogy allows one to test, challenge and verify, in tabletop experiments, the elusive processes of black hole m... read more
Date: 13/08/2015 - 4:30 pm

PIRSA:15080024  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Welcome to “The Unruh Fest”
Speaker(s): Silke Weinfurtner
Abstract:
Date: 13/08/2015 - 9:00 am

PIRSA:15040050  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Spacetime from bits
Speaker(s): Silke Weinfurtner
Abstract: We present a new description of discrete space-time in 1+1 dimensions in terms of a set of elementary geometrical units that represent its independent classical degrees of freedom. This is achieved by means of a binary encoding that is ergodic in the class of space-time manifolds respecting coordina... read more
Date: 16/04/2015 - 2:30 pm

PIRSA:15040092  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Hydrodynamic simulations of rotating and non-rotating black holes
Speaker(s): Silke Weinfurtner
Abstract: There is an analogy between the propagation of fields in the vicinity of astrophysical black holes and the that of small excitations in fluids and superfluids. This analogy allows one to test, challenge and verify, in tabletop experiments, the elusive processes of black hole mass and angular momentu... read more
Date: 01/04/2015 - 2:00 pm
Series: Colloquium

PIRSA:11100063  ( MP4 Medium Res , MP4 Low Res , MP3 , PDF ) Which Format?
Quantum Gravity Laboratory
Speaker(s): Silke Weinfurtner
Abstract: At the level of effective field theory it is possible to establish analogies between non-gravitational and gravitational systems. For example, first order perturbation equations in an analogue gravity model can be written as a wave equation in a curved spacetime. Perhaps the most intriguing applicat... read more
Date: 27/10/2011 - 11:00 am

PIRSA:09110038  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Black hole experiments: Testing effective field theories in curved spacetimes
Speaker(s): Silke Weinfurtner
Abstract: In 1981 Bill Unruh showed that the equation of motion for sound waves in a convergent fluid flows is given by a wave equation in an acoustic metric geometry. More importantly it is possible to set up sonic horizons in transsonic flows, and thus in principle to mimic experimentally the black-hole... read more
Date: 11/11/2009 - 2:00 pm
Series: Colloquium

PIRSA:09110057  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Quantum gravity without Lorentz invariance
Speaker(s): Silke Weinfurtner
Abstract:
Date: 08/11/2009 - 4:30 pm

PIRSA:08110042  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Emergent spacetimes
Speaker(s): Silke Weinfurtner
Abstract: We discuss the possibility that spacetime geometry may be an emergent phenomenon. This idea has been motivated by the Analogue Gravity programme. An 'effective gravitational field' dominates the kinematics of small perturbations in an Analogue Model. In these models there is no obvious connection be... read more
Date: 06/11/2008 - 2:00 pm

PIRSA:07110042  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Mass-generating mechanism for Nambu-Goldstone bosons in emergent spacetime and its application for quantum gravity phenomenology
Speaker(s): Silke Weinfurtner
Abstract: Effective field theories (EFTs) have been widely used as a framework in order to place constraints on the Planck suppressed Lorentz violations predicted by various models of quantum gravity. There are however technical problems in the EFT framework when it comes to ensuring that small Lorentz violat... read more
Date: 05/11/2007 - 6:00 pm
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