4 research outputs found

    Topological superfluid of spinless Fermi gases in p-band honeycomb optical lattices with on-site rotation

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    In this paper, we put forward to another route realizing topological superfluid (TS). In contrast to conventional method, spin-orbit coupling and external magnetic field are not requisite. Introducing an experimentally feasible technique called on-site rotation (OSR) into p-band honeycomb optical lattices for spinless Fermi gases and considering CDW and pairing on the same footing, we investigate the effects of OSR on superfluidity. The results suggest that when OSR is beyond a critical value, where CDW vanishes, the system transits from a normal superfluid (NS) with zero TKNN number to TS labeled by a non-zero TKNN number. In addition, phase transitions between different TS are also possible

    Measurement of Λ\Lambda transverse polarization in e+e−e^{+}e^{-} collisions at s=3.68−3.71\sqrt{s}= 3.68-3.71 GeV

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    With data samples collected with the BESIII detector at seven energy points at s=3.68−3.71\sqrt{s}= 3.68 - 3.71 GeV, corresponding to an integrated luminosity of 333 pb−1^{-1}, we present a study of the Λ\Lambda transverse polarization in the e+e−→ΛΛˉe^+e^-\to\Lambda\bar\Lambda reaction. The significance of polarization by combining the seven energy points is found to be 2.6σ\sigma including the systematic uncertainty, which implies a non-zero phase between the transition amplitudes of the ΛΛˉ\Lambda\bar\Lambda helicity states. The modulus ratio and the relative phase of EM-psionicpsionic form factors combined with all energy points are measured to be RΨ=R^{\Psi} = 0.71−0.10+0.10^{+0.10}_{-0.10} ±\pm 0.03 and ΔΦΨ\Delta\Phi^{\Psi} = (23−8.0+8.8^{+8.8}_{-8.0} ±\pm 1.6)∘)^\circ, where the first uncertainties are statistical and the second systematic.Comment: 19 pages, 4 figures, 3 tables, consistent with the publication in JHEP10(2023)08

    Erratum to: Measurement of Λ transverse polarization in e+e− collisions at s \sqrt{s} = 3.68 − 3.71 GeV

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    Recent trends in the graphene-based sensors for the detection of hydrogen peroxide

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