87 research outputs found

    Uniqueness of Inverse Scattering Problem in Local Quantum Physics

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    It is shown that the operator algebraic setting of local quantum physics leads to a uniqueness proof for the inverse scattering problem. The important mathematical tool is the thermal KMS aspect of wedge-localized operator algebras and its strengthening by the requirement of crossing symmetry for generalized formfactors. The theorem extends properties which were previously seen in d=1+1 factorizing models.Comment: to appear in AOP, 18 pages late

    The paradigm of the area law and the structure of transversal and longitudinal lightfront degrees of freedom

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    It is shown that an algebraically defined holographic projection of a QFT onto the lightfront changes the local quantum properties in a very drastic way. The expected ubiquitous vacuum polarization characteristic of QFT is confined to the lightray (longitudinal) direction, whereas operators whose localization is transversely separated are completely free of vacuum correlations. This unexpected ''transverse return to QM'' combined with the rather universal nature of the strongly longitudinal correlated vacuum correlations (which turn out to be described by rather kinematical chiral theories) leads to a d-2 dimensional area structure of the d-1 dimensional lightfront theory. An additive transcription in terms of an appropriately defined entropy related to the vacuum restricted to the horizon is proposed and its model independent universality aspects which permit its interpretation as a quantum candidate for Bekenstein's area law are discussed. The transverse tensor product foliation structure of lightfront degrees of freedom is essential for the simplifying aspects of the algebraic lightcone holography. Key-words: Quantum field theory; Mathematical physics, Quantum gravityComment: 16 pages latex, identical to version published in JPA: Math. Gen. 35 (2002) 9165-918

    Radiosonde raw data from tandem soundings at Neumayer Station (2020-03), links to files

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    The meteorological observatory Neumayer regularly launches radiosondes. In June 2018 the radiosonde model was changed from Vaisala RS92 to RS41, since production of RS92 has been discontinued. In order to control possible brakes in the timeseries of the measured parameters a two year transition phase was carried out at Neumayer station. During this phase tandem soundings (i.e. one balloon carrying both sonde models) were performed approximately once per week. This dataset contains the raw data from comparison sonde (RS92). The measurement interval of the raw data is typically 1s. All data published here is left as recorded, no quality control was applied

    Continuous meteorological observations at Neumayer station (2020-02)

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    The meteorological observatory Neumayer continuously acquires meteorological parameters. Measurements are taken on or near the meteorological 10m-mast, located some 300m south-east of the main station building. Co-located there are BSRN (Baseline Surface Radiation Network) measurements taken. The measurement interval of the raw data is approximately 6s. Data is quality controlled: All measurements are checked daily on site and again prior to publication according to BSRN standards. Knowingly affected or erroneous data is removed

    Radiosonde raw data from tandem soundings at Neumayer Station (2020-05), links to files

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    The meteorological observatory Neumayer regularly launches radiosondes. In June 2018 the radiosonde model was changed from Vaisala RS92 to RS41, since production of RS92 has been discontinued. In order to control possible brakes in the timeseries of the measured parameters a two year transition phase was carried out at Neumayer station. During this phase tandem soundings (i.e. one balloon carrying both sonde models) were performed approximately once per week. This dataset contains the raw data from comparison sonde (RS92). The measurement interval of the raw data is typically 1s. All data published here is left as recorded, no quality control was applied
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