1,314 research outputs found

    Impurity Effect on the Local Density of States around a Vortex in Noncentrosymmetric Superconductors

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    We numerically study the effect of non-magnetic impurities on the vortex bound states in noncentrosymmetric systems. The local density of states (LDOS) around a vortex is calculated by means of the quasiclassical Green's function method. We find that the zero energy peak of the LDOS splits off with increasing the impurity scattering rate.Comment: 6 pages, 4 figures; Proc. of SCES201

    Quantum computational universality of hypergraph states with Pauli-X and Z basis measurements

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    Measurement-based quantum computing is one of the most promising quantum computing models. Although various universal resource states have been proposed so far, it was open whether only two Pauli bases are enough for both of universal measurement-based quantum computing and its verification. In this paper, we construct a universal hypergraph state that only requires XX and ZZ-basis measurements for universal measurement-based quantum computing. We also show that universal measurement-based quantum computing on our hypergraph state can be verified in polynomial time using only XX and ZZ-basis measurements. Furthermore, in order to demonstrate an advantage of our hypergraph state, we construct a verifiable blind quantum computing protocol that requires only XX and ZZ-basis measurements for the client.Comment: 12 pages, 8 figures, 1 table, close to published versio

    Gaps In Mental Healthcare Use And Perceived Quality Between Privately Insured Lgb And Heterosexual Individuals In The United States

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    Previous research has identified significantly heightened levels of mental health issues and psychological distress among lesbian, gay, and bisexual (LGB) individuals in the U.S., as well as greater mental health service utilization among this population. Using a nationally representative sample of privately insured adults in the U.S., we investigate differences in mental healthcare utilization, characteristics of mental healthcare received, and perceived quality of care between LGB and heterosexual individuals. Key results find that privately insured LGB men and women are significantly more likely than their heterosexual counterparts to have used outpatient mental healthcare as well as out-of-network (OON) outpatient mental healthcare in the past year. This study also identifies key gender differences in characteristics of mental healthcare use and perceived quality of care among LGB mental healthcare users. LGB women are significantly more likely than Straight women to have a higher mental health condition severity, used overnight inpatient mental healthcare in the past year, and give a low provider rating for their mental healthcare provider. In contrast, LGB men are significantly more likely than Straight men to have seen 3 or more mental healthcare providers in the past year, but are significantly less likely to indicate that their mental healthcare provider does not spend enough time with them, or give a low provider rating. These findings address a gap in literature on perceived quality of mental healthcare among LGB adults in the U.S., and call particular attention to the need to improve the perceived quality of care for LGB women

    Surface Bound States in n-band Systems with Quasiclassical Approach

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    We discuss the tunneling spectroscopy at a surface in multi-band systems such as Fe-based superconductors with the use of the quasiclassical approach. We extend the single-band method by Matsumoto and Shiba [J. Phys. Soc. Jpn. 64, 1703 (1995)] into nn-band systems (n2n \geq 2). We show that the appearance condition of the zero-bias conductance peak does not depend on details of the pair-potential anisotropy, but it depends on details of the normal state properties in the case of fully-gapped superconductors. The surface density of states in a two-band superconductor is presented as a simplest application. The quasiclassical approach enables us to calculate readily the surface-angular dependence of the tunneling spectroscopy.Comment: 9 pages, 7 figures; References and Discussions update

    Contradictory Expressions in Romeo and Juliet

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