The Unruh Fest: A Celebration in Honour of Bill Unruh's 70th Birthday

It is argued that information is lost in the process of black hole formation and evaporation.

TBA

Presented is a discussion of quantum field theory on curved spacetime and of microlocal analysis, with an emphasis on the way that these two areas connected for me personally through a specific problem, namely that of resolving Kay's singularity conjecture for two point functions of a linear scalar…

I review the contentious question, "Does a uniformly accelerated detector radiate?" As Audretsch and Muller pointed out long ago, this is partly a semantic dispute. The talk draws on recent discussions with Alex Calogeracos and George Matsas.

The last decade has seen the impressive development of quantum information science, both in theory and in experiment. There are many measures that can be used to assess the achievements in the field: new algorithms, new applications and larger quantum processors, to name a few. The discovery of…

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 mass…

The problem of the gravitational collapse of small mass in the higher derivative and ghost free theories of gravity is discussed. It will be demonstrated how higher derivative and non-local modifications of gravity equations regularizes static and dynamical solutions. Boosting a static solution of…

The quantum Zeno effect is often very controversial in the context of consciousness problems. Frequent direct measurements of a quantum system freeze its time evolution. Then what happes if an observer continuously watches a Schrodinger's cat from the start of the experiment? Naively this looks like…

This year marks the 40’th anniversary of the Unruh effect as described at the first Marcel Grossmann meeting in 1975. We revisit it with emphasis on the observability issue which might be a concern at first sight, since the linear acceleration needed to reach a temperature 1 K is of order 10^20 m/s…

I will sketch a few interesting phenomena involving ideal plasmas, including helicity conservation, frozen flux, the Blandford-Znajek mechanism, and self-confined Poynting jets, using the language of differential forms.