30,772 research outputs found

    A quark meson coupling model with density- and temperature- dependent quark masses

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    Based on the quark mass density- and temperature- dependent model we suggest a model for nuclear matter where the meson field is introduced to be directly coupled to the quarks. The dynamic formation of the nucleon bag, the saturation properties of nuclear matter as well as equation of state for this model are studies.Comment: 4 pages, 2 figure

    New Optimal Binary Sequences with Period 4p4p via Interleaving Ding-Helleseth-Lam Sequences

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    Binary sequences with optimal autocorrelation play important roles in radar, communication, and cryptography. Finding new binary sequences with optimal autocorrelation has been an interesting research topic in sequence design. Ding-Helleseth-Lam sequences are such a class of binary sequences of period pp, where pp is an odd prime with p1(mod 4)p\equiv 1(\bmod~4). The objective of this letter is to present a construction of binary sequences of period 4p4p via interleaving four suitable Ding-Helleseth-Lam sequences. This construction generates new binary sequences with optimal autocorrelation which can not be produced by earlier ones