Evidence of Strong Pion Fluctuation in Jet-Like Events in ^32S-AgBr Interactions

We presents the analysis of ring-like and jet-like events in terms of Scaled Factorial Moments （SFMs） in one dimensional space up to the sixth order of moments for ^32S-AgBr interactions at 200 AGeV energy. The study reveals a power law growth of SFMs with decreasing bin width of the azimuthal distribution in the ^32S- AgBr data at 200 AGeV in both the cases. It is seen that strong intermittent pattern is revealed only in jet-like events.     

Fluctuation and fractality study of target residue in S32- AgBr interaction at 200 A GeV

In this paper we analysed scaled factorial moment in different phase-space intervals to study the dynamical fluctuation of target evaporated particles in ³²S-AgBr interactions at 200 A GeV. In order to gather knowledge about the detailed characteristics of intermittency behaviour, the SFMs are calculated upto 6th order. The analysis indicates the occurence of a nonthermal phase transition and different aspects of particle production. The multifractility among target evaporated particles is also indicated by the data when analysed using the new method proposed by Takagi.     

Multiplicity fluctuations of pions and protons at SPS energy — An in-depth analysis with factorial correlator

We compute the factorial correlators to study the dynamical fluctuations of pions and a combination of pions and protons (compound multiplicity) in ³²S-AgBr interactions at 200 A GeV. The study reveals that for both pion and compound multiplicity the correlated moments increase with the decrease in bin-bin separation D, following a power-law, which suggests the self-similarity of multiplicity fluctuation in each case. The results of the analysis also show a consistency with the prediction of α-model for the existence of intermittency in both cases.     

Unusual liquid state of hard-core bosons on the pyrochlore lattice

We study the physics of hard-core bosons with unfrustrated hopping (t) and nearest-neighbor repulsion (V) on the three dimensional pyrochlore lattice. At half-filling, we demonstrate that the small V/t superfluid state eventually becomes unstable at large enough V/t to an unusual insulating state which displays no broken lattice translation symmetry. Equal time and static density correlators in this insulator are well described by a mapping to electric field correlators in the Coulomb phase of a U(1) lattice gauge theory, allowing us to identify this insulator with a U(1) fractionalized Mott-insulating state. The possibility of observing this phase in suitably designed atom-trap experiments with ultracold atoms is also discussed, as are specific experimental signatures.     

Event-to-Event Fluctuation Analysis for Pions and Protons at SPS Energy

This study reports a detailed analysis of spatial fluctuations as well as event-to-event fluctuations of compound hadrons (pions + protons) produced in ³²S–AgBr interactions at 200 AGeV with a new technique known as erraticity analysis. This analysis is done for both emission-angle and azimuthal-angle phase spaces using gap-moment method. The study provides a strong evidence of erratic behavior of compound hadrons in ultra-relativistic nuclear collisions.     

Ring-Like and Jet-Like Events in Ultra High-Energy Interactions—an Analysis in Terms of Multifractal Parameters

Ring-like and jet-like events produced in ¹⁶O-AgBr interactions at 60 AGeV are analyzed in terms of multifractal G-moment method and factorial moment method in both η space and ? space for emitted pions. Further, the Levy indices and multifractal specific heat c have been calculated. The results clearly indicate that μ and c both are different in ring-like and jet-like events depicting different mechanism in the production process.     

Photoinduced [3+2] Cycloaddition of Carbenes and Nitriles: A Versatile Approach to Oxazole Synthesis

We have developed a photoinduced protocol for the synthesis of pharmaceutically important oxazole molecules using diazo- and nitrile-containing reactants. The process involves the initial photolysis of the diazo compound to afford singlet carbenes, which are tapped by nitriles in a [3+2] cycloaddition fashion to give substituted oxazoles. With di-nitrile compounds, useful bis-oxazoles were obtained. The applicability of the transformation is showcased through the expedient synthesis of small-molecule drugs and biologically relevant molecules such as felbinac, pimprinine, texamine, ugnenenazole etc. The protocol is also useful for the generation of ²H and ¹³C isotope labelled oxazoles. Merging photolysis with continuous-flow chemistry was demonstrated for scaling up the reaction. The non-requirement of metal catalysis or photosensitizers to harness the light energy with blue light sufficing the execution of the reaction makes it a versatile and general protocol for the synthesis of structurally diverse oxazoles