5,065 research outputs found

    Drinfel'd Realization of Quantum Affine Superalgebra Uq(gl(1∣1))^U_q\hat{(gl(1|1))}

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    We obtain Drinfel'd's realization of quantum affine superalgebra Uq(gl(1∣1))^U_q\hat{(gl(1|1))} based on the super version of RS construction method and Gauss decomposition

    Comments on Drinfeld Realization of Quantum Affine Superalgebra Uq[gl(m∣n)(1)]U_q[gl(m|n)^{(1)}] and its Hopf Algebra Structure

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    By generalizing the Reshetikhin and Semenov-Tian-Shansky construction to supersymmetric cases, we obtain Drinfeld current realization for quantum affine superalgebra Uq[gl(m∣n)(1)]U_q[gl(m|n)^{(1)}]. We find a simple coproduct for the quantum current generators and establish the Hopf algebra structure of this super current algebra.Comment: Some errors and misprints corrected and a remark in section 4 removed. 12 pages, Latex fil

    Elliptic flow of Ï•\phi meson and strange quark collectivity at RHIC

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    Based on A Multi-Phase Transport (AMPT) model, we have studied the elliptic flow v2v_{2} of ϕ\phi mesons from reconstructed K+K−K^{+}K^{-} decay channel at the top Relativistic Heavy Ion Collider energy at Brookhaven National Laboratory. The dependences of v2v_{2} on transverse momentum pTp_T and collision centrality are presented and the rescattering effect of ϕ\phi mesons in the hadronic phase is also investigated. The results show that experimental measurement of v2v_{2} for ϕ\phi mesons can retain the early collision information before ϕ\phi decays and that the ϕ\phi v2v_2 value obeys the constituent quark number scaling which has been observed for other mesons and baryons. Our study indicates that the ϕ\phi v2v_2 mostly reflects partonic level collectivity developed during the early stage of the nucleus-nucleus collision and the strange and light up/down quarks have developed similar angular anistropy properties at the hadronization.Comment: 5 pages and 5 figures; accepted by Physical Review
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