48 citations · 48 across the 1 of their papers we have counts for
7 papers
Toy Models of Superposition
Nelson Elhage, Tristan Hume, Catherine Olsson +13
Neural networks often pack many unrelated concepts into a single neuron - a puzzling phenomenon known as 'polysemanticity' which makes interpretability much more challenging. This…
Black hole superradiance of self-interacting scalar fields
Masha Baryakhtar, Marios Galanis, Robert Lasenby +1
Black hole superradiance is a powerful probe of light, weakly-coupled hidden sector particles. Many candidate particles, such as axions, generically have self-interactions that can…
Long range dark matter self-interactions and plasma instabilities
Robert Lasenby
So far, the observed effects of dark matter are compatible with it having purely gravitational interactions. However, in many models, dark matter has additional interactions with i…
Parametrics of electromagnetic searches for axion dark matter
Robert Lasenby
Light axion-like particles occur in many theories of beyond-Standard-Model physics, and may make up some or all of the universe's dark matter. One of the ways they can couple to th…
Microwave cavity searches for low-frequency axion dark matter
Robert Lasenby
For low-mass (frequency GHz) axions, dark matter detection experiments searching for an axion-photon-photon coupling generally have suppressed sensitivity, if they use a stat…
Light vectors coupled to bosonic currents
Jeff A. Dror, Robert Lasenby, Maxim Pospelov
New spin-1 particles with masses below the weak scale are present in many theories of beyond Standard Model (SM) physics. In this work, we extend previous analyses by systematicall…