Browse Fakultät für Mathematik und Physik by Dewey Decimal Classification

Browse Fakultät für Mathematik und Physik by Dewey Decimal Classification

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  • 0.75 atoms improve the clock signal of 10,000 atoms 
    Kruse, I.; Lange, K.; Peise, J.; Lücke, Bernd; Pezzè, L.; Arlt, Jan J.; Ertmer, Wolfgang; Lisdat, C.; Santos, Luis; Smerzi, A.; Klempt, Carsten (Bellingham, WA : S P I E - International Society for Optical Engineering, 2017)
    Since the pioneering work of Ramsey, atom interferometers are employed for precision metrology, in particular to measure time and to realize the second. In a classical interferometer, an ensemble of atoms is prepared in ...
  • The 100th anniversary of the four-point probe technique: the role of probe geometries in isotropic and anisotropic systems 
    Miccoli, Ilio; Edler, Frederik; Pfnür, Herbert; Tegenkamp, Christoph (Bristol : IOP Publishing Ltd., 2015-06-10)
    The electrical conductivity of solid-state matter is a fundamental physical property and can be precisely derived from the resistance measured via the four-point probe technique excluding contributions from parasitic contact ...
  • 137Cs in the meat of wild boars: a comparison of the impacts of Chernobyl and Fukushima 
    Steinhauser, Georg; Saey, Paul R. J. (Cham : Springer, 2016)
    The impact of Chernobyl on the 137Cs activities found in wild boars in Europe, even in remote locations from the NPP, has been much greater than the impact of Fukushima on boars in Japan. Although there is great variability ...
  • 1D-Plasmonen in Ag-Nanodrähten auf vicinalem Si(557) 
    Krieg, Ulrich (Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2014)
    [no abstract]
  • 350-fold improved measurement of the antiproton magnetic moment using a multi-trap method 
    Smorra, Christian; Blessing, Pascal E.; Borchert, Matthias J.; Devlin, Jack A.; Harrington, James A.; Higuchi, Takashi; Morgner, Jonathan; Nagahama, Hiroki; Sellner, Stefan; Bohman, Matthew A.; Mooser, Andreas H.; Schneider, Georg L.; Schön, Natalie; Wiesinger, Markus; Blaum, Klaus; Matsuda, Yasuyuki; Ospelkaus, Christian; Quint, Wolfgang; Walz, Jochen; Yamazaki, Yasunori; Ulmer, Stefan (New York, NY : Springer International Publishing, 2018)
    We summarize our recent 1.5 parts per billion measurement of the antiproton magnetic moment using the multi Penning-trap system of the BASE collaboration. The result was achieved by combining the detection of individual ...
  • 3D imaging of biofilms on implants by detection of scattered light with a scanning laser optical tomograph 
    Heidrich, Marko; Kühnel, Mark P.; Kellner, Manuela; Lorbeer, Raoul-Amadeus; Lange, Tineke; Winkel, Andreas; Stiesch, Meike; Meyer, Heiko; Heisterkamp, Alexander (Washington, DC : Optical Society of America, 2011)
    Biofilms - communities of microorganisms attached to surfaces - are a constant threat for long-term success in modern implantology. The application of laser scanning microscopy (LSM) has increased the knowledge about ...
  • 3D printed microfluidic lab-on-a-chip device for fiber-based dual beam optical manipulation 
    Wang, Haoran; Enders, Anton; Preuss, John-Alexander; Bahnemann, Janina; Heisterkamp, Alexander; Torres-Mapa, Maria Leilani ([London] : Macmillan Publishers Limited, part of Springer Nature, 2021)
    3D printing of microfluidic lab-on-a-chip devices enables rapid prototyping of robust and complex structures. In this work, we designed and fabricated a 3D printed lab-on-a-chip device for fiber-based dual beam optical ...
  • 40K-87Rb Feshbach resonances: Modeling the interatomic potential 
    Klempt, Carsten; Henninger, T.; Topic, O.; Will, J.; Ertmer, Wolfgang; Tiemann, E.; Arlt, Jan J. (College Park : American Physical Society, 2007)
    We have observed 28 heteronuclear Feshbach resonances in ten spin combinations of the hyperfine ground states of a 40K−87Rb mixture. The measurements were performed by observing the loss rates from an atomic mixture at ...
  • 4D supersymmetric gauge theories of spacetime translations 
    Brandt, Friedemann (Berlin, Heidelberg : Springer, 2022)
    The paper addresses the question whether in four spacetime dimensions, besides standard supergravity theories, field theories exist whose symmetries include local spacetime translations and supersymmetries generated by ...
  • 9Be+ ion qubit control using an optical frequency comb 
    Paschke, Anna-Greta (Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2017)
    [no abstract]
  • A Bayesian estimation method for variational phase-field fracture problems 
    Khodadadian, Amirreza; Noii, Nima; Parvizi, Maryam; Abbaszadeh, Mostafa; Wick, Thomas; Heitzinger, Clemens (Berlin : Springer, 2020)
    In this work, we propose a parameter estimation framework for fracture propagation problems. The fracture problem is described by a phase-field method. Parameter estimation is realized with a Bayesian approach. Here, the ...
  • A review of quantum cellular automata 
    Farrelly, Terry (Wien : Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften, 2020)
    Discretizing spacetime is often a natural step towards modelling physical systems. For quantum systems, if we also demand a strict bound on the speed of information propagation, we get quantum cellular automata (QCAs). ...
  • A scalable high-performance magnetic shield for very long baseline atom interferometry 
    Wodey, E.; Tell, D.; Rasel, E.M.; Schlippert, D.; Baur, R.; Kissling, U.; Kölliker, B.; Lorenz, M.; Marrer, M.; Schläpfer, U.; Widmer, M.; Ufrecht, C.; Stuiber, S.; Fierlinger, P. (College Park, MD : American Institute of Physics, 2020)
    We report on the design, construction, and characterization of a 10 m-long high-performance magnetic shield for very long baseline atom interferometry. We achieve residual fields below 4 nT and longitudinal inhomogeneities ...
  • A transportable quantum gravimeter employing delta-kick collimated Bose–Einstein condensates 
    Heine, Nina; Matthias, Jonas; Sahelgozin, Maral; Herr, Waldemar; Abend, Sven; Timmen, Ludger; Müller, Jürgen; Rasel, Ernst Maria (Berlin [u.a.] : Springer, 2020)
    Abstract: Gravimetry with low uncertainty and long-term stability opens up new fields of research in geodesy, especially in hydrology and volcanology. The main limitations in the accuracy of current generation cold atom ...
  • About the production of residual nuclides by neutron-induced reactions up to 180 MeV 
    Hansmann, David (Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2010)
    [no abstract]
  • Absence of Localization in Two-Dimensional Clifford Circuits 
    Farshi, Tom; Richter, Jonas; Toniolo, Daniele; Pal, Arijeet; Masanes, Lluis (College Park, MD : American Physical Society, 2023)
    We analyze a Floquet circuit with random Clifford gates in one and two spatial dimensions. By using random graphs and methods from percolation theory, we prove in the two-dimensional (2D) setting that some local operators ...
  • Absorbing boundaries in the mean-field approximation 
    Jhala, Chirag; Dreissigacker, Ingo; Lein, Manfred (College Park, MD : American Physical Society, 2010)
    Absorbing boundaries in the mean-field approximation are investigated and applied to small systems interacting with strong laser fields. Two types of calculations are considered: (i) a variational approach with a complex ...
  • Absorption Measurements of Periodically Poled Potassium Titanyl Phosphate (PPKTP) at 775 nm and 1550 nm 
    Steinlechner, Jessica; Ast, Stefan; Krueger, Christoph; Singh, Amrit Pal; Eberle, Tobias; Haendchen, Vitus; Schnabel, Roman (Basel : Mdpi Ag, 2013-01)
    The efficient generation of second-harmonic light and squeezed light requires non-linear crystals that have low absorption at the fundamental and harmonic wavelengths. In this work the photo-thermal self-phase modulation ...
  • Abstimmbare Einfrequenz-Strahlquellen hoher Stabilität im infraroten, sichtbaren und ultravioletten Spektralbereich 
    Bode, Markus (Hannover : Universität Hannover, 1999)
    [no abstract]
  • Accidental SUSY: Enhanced bulk supersymmetry from brane back-reaction 
    Burgess, C.P.; Van Nierop, L.; Parameswaran, Susha L.; Salvio, A.; Williams, M. (Heidelberg : Springer Verlag, 2013)
    We compute how bulk loops renormalize both bulk and brane effective interactions for codimension-two branes in 6D gauged chiral supergravity, as functions of the brane tension and brane-localized flux. We do so by explicitly ...

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