Th — Thorium

Searching for quark matter with dileptons and photons: From SPS to relativistic heavy-ion collider

“…Calculations based on chiral reduction formulae, although similar in principle to those of [24], find very little effect due to baryons and are in fact low compared to the data [25]. The RBUU transport calculations of Koch [26] find also very little effect due to the baryons and come to a reasonably close description of the data as shown in figure 4 by the dotted line. However, the agreement is achieved by overestimating the yield (and the Dalitz decay yield) as clearly seen in the figure in the mass region Ñ 800 MeV, which is dominated by the · decay.…”

From Starproducts to Drinfeld-Twists: Present and Future Applications

“…This is similar to the problem to lift a Heisenbergalgebra to a Hopf-algebra. In the rest of this treatise we show how such vector fields nevertheless can be constructed 16), 17) such that they can obtain a coalgebra structure and antipode. And with their use we can construct twists that deform a Lie-algebra g without necessarily using its generators -or in technical terms we can construct twists with…”

Mirror versus naive assignment in chiral models for the nucleon

“…[4,22,23,24] and refs. therein), does not vanish [3]. In fact, this term, which describes the contribution to the nucleon mass which arises from the explicit symmetry breaking, acquires a nonzero (and quite sizable) contribution from the explicit symmetry breaking encoded in the chiral condensate σ 0 .…”