The LTi Cell, an Immunologic Chameleon

An Introduction to Chameleon Gravity

Following work by Khoury and Weltman, we introduce a scalar field φ, the chameleon, which is conformally coupled to matter. That is, matter experiences a metric which is a conformal transform (parametrized by φ) of the Einstein metric. The effective potential of the field φ is a sum of its selfinteraction term and an exponential term due to the conformal coupling. Under certain conditions on th...

Rheumatoid arthritis: an antigenic chameleon.

Nowadays, rheumatologists and immunologists have to be absorptive like a sponge —from a breathtaking progress in the basic research field to emerging approaches in diagnosis and treatment of complex disorders like rheumatoid arthritis (RA), there is always exciting and sometimes unexpected news to digest. For those who are particularly interested in the autoimmune response in RA, we have to rea...

Beyond the Chameleon Mechanism

As a result of non-linear self-interactions, in chameleon theories where the field couples to matter much more strongly than gravity does, the fifth force between two bodies with thinshell is independent of their coupling to the field. As a consequence the bounds on the coupling coming from terrestrial tests of gravity, measurements of the Casimir force and those constraints imposed by the phys...

Boom Chameleon

We introduce the Boom Chameleon, a novel input/output device consisting of a flat-panel display mounted on a tracked mechanical boom. The display acts as a physical window into 3D virtual environments, through which a one-to-one mapping between real and virtual space is preserved. The Boom Chameleon is further augmented with a touch-screen and a microphone/speaker combination. We present a 3D a...

Chameleon of the sea.