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Nuclear Theory·nucl-th

Monday·March 23, 2015

12 papers—9 primary·3 cross-listed

All12Primary9Cross-lists3
  1. 10

    Test of the Atiyah-Singer Index Theorem for Fullerene with a Superconducting Microwave Resonator

    B. Dietz · T. Klaus · M. Miski-Oglu · A. Richter · M. Bischoff · L. von Smekal · J. Wambach

    Experiments have been performed using a spherical superconducting microwave resonator that simulates the geometric structure of the C60 fullerene molecule. The objective was to study with very high resolution the exceptional spectral properties emerging from the symmetries of the icosahedral structure of the carbon lattice. In particular, the number of zero modes has been determined to test the predictions of the Atiyah-Singer index theorem, which relates it to the topology of the curved carbon lattice. This is, to the best of our knowledge, the first experimental verification of the index theorem.

    ↳ cond-mat.mes-hallnucl-exnucl-thquant-phPRL(2015)·10 citations
  3. 12

    Jet Structure in Heavy Ion Collisions

    Jean-Paul Blaizot🇫🇷 · Yacine Mehtar-Tani🇺🇸

    We review recent theoretical developments in the study of the structure of jets that are produced in ultra relativistic heavy ion collisions. The core of the review focusses on the dynamics of the parton cascade that is induced by the interactions of a fast parton crossing a quark-gluon plasma. We recall the basic mechanisms responsible for medium induced radiation, underline the rapid disappearance of coherence effects, and the ensuing probabilistic nature of the medium induced cascade. We discuss how large radiative corrections modify the classical picture of the gluon cascade, and how these can be absorbed in a renormalization of the jet quenching parameter . Then, we analyze the (wave)-turbulent transport of energy along the medium induced cascade, and point out the main characteristics of the angular structure of such a cascade. Finally, color decoherence of the in-cone jet structure is discussed. Modest contact with phenomenology is presented towards the end of the review.

    ↳ hep-phnucl-thIJMPE(2015)·216 citations

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