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  • Articles  (5)
  • 47A20  (1)
  • Brans–Dicke theory  (1)
  • Keywords. Cyclizations; 5,6-Fused quinolones; Heterocycles; Sigmatropic rearrangement.  (1)
  • Moyal–Weyl algebra  (1)
  • PACS. 42.62.Fi Laser spectroscopy – 33.70.-w Intensities and shapes of molecular spectral lines and bands – 33.70.Jg Line and band widths, shapes, and shifts  (1)
  • 2000-2004  (5)
  • 1970-1974
  • 1965-1969
Collection
  • Articles  (5)
Source
Keywords
Publisher
Years
Year
Topic
  • 1
    Electronic Resource
    Electronic Resource
    A harmonic-type maximal principle in the three chains completion problem (2000)
    Springer
    Integral equations and operator theory 36 (2000), S. 396-408 
    Details
    ISSN: 1420-8989
    Keywords: 47A57 ; 47A20 ; 47B35
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract In this note, we prove a harmonic-type maximal principle for the Schur parametrization of all contractive interpolants in the three chains completion problem (see [4]), which is analogous to the maximal principle proven in [2] in case of the Schur parametrization of all contractive intertwining liftings in the commutant lifting theorem.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01232737
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  • 2
    Electronic Resource
    Electronic Resource
    Regioselective Synthesis ofPyrano[3,2-f]quinolin-2(7H)-onesand Furo[3,2-f]quinolin-2-ones (2000)
    Springer
    Monatshefte für Chemie 131 (2000), S. 967-973 
    Details
    ISSN: 1434-4475
    Keywords: Keywords. Cyclizations; 5,6-Fused quinolones; Heterocycles; Sigmatropic rearrangement.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary.  A simple and efficient synthesis of the hitherto unreported ring systems pyrano[3,2-f]quinolin-2(7H)-one and furo[3,2-f]quinolin-2-one was accomplished via a thermal [3,3]-sigmatropic rearrangement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00010318
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  • 3
    Electronic Resource
    Electronic Resource
    A Quantization on Riemann Surfaces with Projective Structure (2000)
    Springer
    Letters in mathematical physics 54 (2000), S. 73-82 
    Details
    ISSN: 1573-0530
    Keywords: projective structure ; symplectic structure ; quantization ; Moyal–Weyl algebra
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract Let X be a Riemann surface equipped with a projective structure. Let $$\mathcal{L}$$ be a square-root of the holomorphic cotangent bundle K X . Consider the symplectic form on the complement of the zero section of $$\mathcal{L}$$ obtained by pulling back the symplectic form on K X using the map ν ↦ ν⊗2. We show that this symplectic form admits a natural quantization. This quantization also gives a quantization of the complement of the zero section in K X equipped with the natural symplectic form.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007650202446
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  • 4
    Electronic Resource
    Electronic Resource
    Evolution of Dynamical Coupling in Scalar Tensor Theory from Noether Symmetry (2000)
    Springer
    General relativity and gravitation 32 (2000), S. 1615-1626 
    Details
    ISSN: 1572-9532
    Keywords: Brans–Dicke theory ; cosmology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present the gravitational coupling function ω(φ) in the vacuum scalar-tensor theory as allowed by the Noether symmetry. We also obtain some exact cosmological solutions in the spatially homogeneous and isotropic background thereby showing that the attractor mechanism is not effective enough to reduce the theory to Einstein theory. It is observed that, asymptotically, the scalar tensor theory goes over to Einstein theory with a finite value of ω. This work thus supports earlier works in this direction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1001990303511
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  • 5
    Electronic Resource
    Electronic Resource
    Semi-classical analysis of helium broadened acetylene (ν 1 +3ν 3 ) band transitions measured by a NIR diode laser spectrometer (2001)
    Springer
    The European physical journal 13 (2001), S. 337-344 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 42.62.Fi Laser spectroscopy – 33.70.-w Intensities and shapes of molecular spectral lines and bands – 33.70.Jg Line and band widths, shapes, and shifts
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Helium-broadened line shapes of the rovibrational transitions of the ( ν 1 + 3ν 3 ) combination-overtone band of C2H2 have been studied by using a near IR diode laser spectrometer. The 2 f frequency detection technique has been employed for signal detection of these weak band transitions. The linestrength parameters and broadening coefficients (HWHM) have been extracted by fitting the observed line shapes with Voigt profiles. Helium, lightest noble gas perturber, exhibits the effect of close collisional dephasing on pressure broadened line profiles. Due to overlapping of atomic orbitals the repulsive interaction dominates over attractive interaction for collision diameter in the 3 to 4 Årange. In order to interpret this type of linear polyatomic-monatomic collision phenomena the Tipping-Herman potential has been chosen. Emphasis has been given to the analysis of observed data to obtain information about interaction potential, phase-shift and molecular constants. The results obtained from detailed semi-classical model calculations are found to be in good agreement with the observed data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100530170250
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