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Stenger, Georg

doi:10.1023/a:1005972005357

Cited by 2 publications

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“…The dilute limit of spin-one bosons with antiferromagnetic interactions was studied in a few experiments in [21,22] and also theoretically investigated in various works [23,24,25,26]. A geometric-description-based nonperturbative approach to strong-coupling limits was proposed in [27,28].…”

Section: The Microscopic Hamiltonianmentioning

confidence: 99%

Berry’s phases of ground states of interacting spin-one bosons: Chains of monopoles and monosegments

Wiemer

Zhou

2004

Phys. Rev. B

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We study Berry's connection potentials of many-body ground states of spin-one bosons with antiferromagnetic interactions in adiabatically varying magnetic fields. We find that Berry's connection potentials are generally determined by, instead of usual singular monopoles, linearly positioned monosegments each of which carries one unit of topological charge; in the absence of a magnetic field gradient this distribution of monosegments becomes a linear chain of monopoles. Consequently, Berry's phases consist of a series of step functions of magnetic fields; a magnetic field gradient causes rounding of these step functions. We also calculate Berry's connection fields, profiles of monosegments, and show that the total topological charge is conserved in a parameter space.

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Section: The Microscopic Hamiltonianmentioning

confidence: 99%

Berry’s phases of ground states of interacting spin-one bosons: Chains of monopoles and monosegments

Wiemer

Zhou

2004

Phys. Rev. B

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Boron isotope geochemistry ofNa‐bicarbonate,Na‐chloride, andCa‐chloride waters from theNorthernApennineForedeep basin: other pieces of the sedimentary basin puzzle

2014

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The boron stable isotope ratio δ11B of 12 water samples representative of three chemical facies (fresh Na‐bicarbonate, brackish Na‐chloride, saline, and brine Ca‐chloride) has been analyzed. Interpretation of the δ11B data, along with the chemical compositions, reveals that Na‐carbonate waters from the Northern Apennine are of meteoric origin, with boron contributions from clay desorption and mixing with seawater‐derived fluids of Na‐chloride or Ca‐chloride compositions. The comparison of our new results with the literature data on other sedimentary basins of Mediterranean, and worldwide, confirms the contribution of Na‐bicarbonate waters to the genesis of mud volcano fluids. The Na‐chloride sample of Salvarola (SAL), which may represent the end‐member of the mud volcanoes, and the Ca‐chloride brine water from Salsomaggiore (SM) indicate boron release from clays compatible with the diagenetic process. The empirical equation: normalδ11B=false[5.1364×ln(1/B)mgl−1false]+44.601relating boron concentration and the stable isotope composition of the fluids observed in this study and the literature is proposed to trace the effect of diagenesis in sedimentary basins. A geothermometer associated to the diagenetic equation is also proposed: normalT∘C=false[δ11normalB−38.8730.166667em(±1.180)false]/false[−0.1640.166667em(±0.012)false] The application of this equation to obtain reservoir temperatures from δ11B compositions of waters should be carefully evaluated against the results obtained from other chemical and isotopic geothermometers from other basins around the world.

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Cited by 2 publications

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Berry’s phases of ground states of interacting spin-one bosons: Chains of monopoles and monosegments

Berry’s phases of ground states of interacting spin-one bosons: Chains of monopoles and monosegments

Boron isotope geochemistry ofNa‐bicarbonate,Na‐chloride, andCa‐chloride waters from theNorthernApennineForedeep basin: other pieces of the sedimentary basin puzzle

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