10,091 research outputs found

    Rawnsley's ε\varepsilon-function on some Hartogs type domains over bounded symmetric domains and its applications

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    The purpose of this paper is twofold. Firstly, we will compute the explicit expression of the Rawnsley's ε\varepsilon-function ε(α,g(μ;ν))\varepsilon_{(\alpha,g(\mu;\nu))} of ((j=1kΩj)Bd0(μ),g(μ;ν))\big(\big(\prod_{j=1}^k\Omega_j\big)^{{\mathbb{B}}^{d_0}}(\mu),g(\mu;\nu)\big), where g(μ;ν)g(\mu;\nu) is a K\"ahler metric associated with the K\"ahler potential j=1kνjlnNΩj(zj,zj)μjln(j=1kNΩj(zj,zj)μjw2)-\sum_{j=1}^k\nu_j\ln N_{\Omega_j}(z_j,\overline{z_j})^{\mu_j}-\ln(\prod_{j=1}^kN_{\Omega_j}(z_j,\overline{z_j})^{\mu_j}-\|w\|^2) on the generalized Cartan-Hartogs domain (j=1kΩj)Bd0(μ)\big(\prod_{j=1}^k\Omega_j\big)^{{\mathbb{B}}^{d_0}}(\mu) and obtain necessary and sufficient conditions for ε(α,g(μ;ν))\varepsilon_{(\alpha,g(\mu;\nu))} to become a polynomial in 1w~21-\|\widetilde{w}\|^2. Secondly, we study the Berezin quantization on (j=1kΩj)Bd0(μ)\big(\prod_{j=1}^k\Omega_j\big)^{{\mathbb{B}}^{d_0}}(\mu) with the metric g(μ;ν) g(\mu;\nu).Comment: 21 pages. arXiv admin note: text overlap with arXiv:1411.523

    Design of PP3 a Packet Processor Chip

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    This paper describes the design of the PP3 packet processor chip. PP3 is one of the four component chips in a packet processor used in the high speed broadcast packet switching network [Tu88]. Together with the other three component chips, PP3 provides the interface between the fiber optic links and the switch fabric. PP3 in currently being fabricated in 2 μm CMOS technology

    Matrix Product Representation of Locality Preserving Unitaries

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    The matrix product representation provides a useful formalism to study not only entangled states, but also entangled operators in one dimension. In this paper, we focus on unitary transformations and show that matrix product operators that are unitary provides a necessary and sufficient representation of 1D unitaries that preserve locality. That is, we show that matrix product operators that are unitary are guaranteed to preserve locality by mapping local operators to local operators while at the same time all locality preserving unitaries can be represented in a matrix product way. Moreover, we show that the matrix product representation gives a straight-forward way to extract the GNVW index defined in Ref.\cite{Gross2012} for classifying 1D locality preserving unitaries. The key to our discussion is a set of `fixed point' conditions which characterize the form of the matrix product unitary operators after blocking sites. Finally, we show that if the unitary condition is relaxed and only required for certain system sizes, the matrix product operator formalism allows more possibilities than locality preserving unitaries. In particular, we give an example of a simple matrix product operator which is unitary only for odd system sizes, does not preserve locality and carries a `fractional' index as compared to their locality preserving counterparts.Comment: 14 page
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