61,636 research outputs found
Quantum Group SU_{q}(2) and Pairing in Nuclei
A scheme for treating the pairing of nucleons in terms of generators of
Quantum Group SU_{q}(2) is presented. The possible applications to nucleon
pairs in a single orbit, multishell case, pairing vibrations and
superconducting nuclei are discussed. The formalism for performing BCS
calculations with q-deformed nucleon pairs is constructed and the role played
by deformation parameter q analyzed in the context of nucleons in a single
orbit and for Sn Isotopes.Comment: 6 Pages, No figures, To be published in Proceedings of International
Conference "Geometrical Aspects of Quantum Fields", Londrina PR, April 2000,
World Scientifi
Production of antinuclei in pp collisions at \sqrt{s} = 7 TeV with ALICE at the LHC
First results of ALICE on the production of nuclei and antinuclei in pp
collisions at \surd s = 7 TeV are presented. These particles are identified
using the energy loss (dE/dx) measurements in the Time Projection Chamber. The
Inner Tracking System allows a precise determination of the event vertex, by
which primary and secondary particles are well separated. The high statistics
of over 350 M events give a significant number of light nuclei and antinuclei
such as (anti)deuterons, (anti)tritons, (anti)Helium3 and possibly
(anti)hypertritons. The study of nuclei and antinuclei will help to understand
their production mechanisms. Antinuclei production as a function of particle
multiplicity in an event is discussed in this respect. Various particle ratios
obtained from these collisions using predictions from a statistical model are
also presented.Comment: 4 pages, 7 figures, Proceeding for ICPAQGP Conference 2010, Goa,
Indi
Genuine Four Tangle for Four Qubit States
We report a four qubit polynomial invariant that quantifies genuine four-body
correlations. The four qubit invariants are obtained from transformation
properties of three qubit invariants under a local unitary on the fourth qubit.Comment: 03 pages, This short communication is a contribution to the
proceedings of QCMC 2012 held in Vienna, Austria, July 30th to August 3rd
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