20,901 research outputs found
Network
Network is a device for organising and conceptualising non-linear complexity. Networks defy narrative, chronology and thus also genealogy because they entail a multiplicity of traces. Networks problematize boundaries and centrality but intensify our ability to think in terms of flows and simultaneity. As a concept, network has been highly conducive to theorizing phenomena and processes such as globalization, digital media (Internet), speed, symbiosis and complexity. This in turn enables us to rethink what constitutes the foundations of intelligence, knowledge and even life itself. One particularly useful application of network as a concept is the notion of the gift, which is often seen as the archetypical figure for understanding the nature of economics and social relationships
The Analytic Bootstrap in Fermionic CFTs
We apply the method of the large spin bootstrap to analyse fermionic
conformal field theories with weakly broken higher spin symmetry. Through the
study of correlators of composite operators, we find the anomalous dimensions
and OPE coefficients in the Gross-Neveu model in dimensions
and the Gross-Neveu-Yukawa model in dimensions, based only on
crossing symmetry. Furthermore a non-trivial solution in the
expansion is found for a fermionic theory in which the fundamental field is not
part of the spectrum. The results are perturbative in and valid
to all orders in the spin, reproducing known results for operator dimensions
and providing some new results for operator dimensions and OPE coefficients.Comment: 42+3 pages, no figure
Putting the Diffuse Interstellar Bands on the map - literally!
In a quest to further our understanding of the diffuse interstellar medium
(ISM) as well as the unidentified carriers of the diffuse interstellar bands
(DIBs), we are mapping DIBs across the sky using hundreds of hot stars as
background torches - globular clusters (in particular omega Centauri), nearby
stars in and around the Local Bubble, and stars within the Magellanic Clouds. I
describe the results so far obtained and our current experiments.Comment: Talk presented at IAU Symposium 297 "The Diffuse Interstellar Bands",
CUP proceedings editors: Jan Cami and Nick Co
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