arXiv subjects
Publications and source records attributed to G. Padmanabha.
Measurements of spin observables in pp -> {\vec p}{\vec p}π^0 are suggested to remove the phase ambiguity of the threshold amplitude. The suggested measurements complement the IUCF data on {\vec p}{\vec p} -> ppπ^0 to completely determine all the twelve partial wave amplitudes, taken into consideration by Mayer et.al. [15] and Deepak, Haidenbauer and Hanhart [20].
The resonance $Δ(1232)$ with spin-parity ${3 \over 2}^+$, which contributes dominantly to the reactions like $γN \to πN$ and $NN \to NNπ$ at intermediate energies, may be expected to be produced in characteristically different polarized spin states. As such an analysis of the decay of polarized delta is presented, which may be utilized to probe empirically the production mechanism. It is shown that measurements of the angular distributions of the pion and the polarization of the nucleon arising out of ${\vecΔ}$ decay can determine empirically the Fano statistical tensors characterizing the ${\vecΔ}$.
We employ conditional Tsallis q entropies to study the separability of symmetric one parameter W and GHZ multiqubit mixed states. The strongest limitation on separability is realized in the limit q-->infinity, and is found to be much superior to the condition obtained using the von Neumann conditional entropy (q=1 case). Except for the example of two qubit and three qubit symmetric states of GHZ family, the $q$-conditional entropy method leads to sufficient - but not necessary - conditions on separability.