Auflistung nach Schlagwort "Physics"

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  • Multicritical behavior in dissipative Ising models 
    Overbeck, Vincent Raphael; Maghrebi, Mohammad F.; Gorshkov, Alexey V.; Weimer, Hendrik (College Park, MD : American Physical Society, 2017)
    We analyze theoretically the many-body dynamics of a dissipative Ising model in a transverse field using a variational approach. We find that the steady-state phase diagram is substantially modified compared to its equilibrium ...
  • On the free-precession candidate PSR B1828-11: Evidence for increasing deformation 
    Ashton, G.; Jones, D.I.; Prix, Reinhard (Oxford : Oxford University Press (OUP), 2017)
    We observe that the periodic variations in spin-down rate and beam-width of the radio pulsar PSR B1828-11 are getting faster. In the context of a free precession model, this corresponds to a decrease in the precession ...
  • Population difference gratings created on vibrational transitions by nonoverlapping subcycle THz pulses 
    Arkhipov, Rostislav; Pakhomov, Anton; Arkhipov, Mikhail; Babushkin, Ihar; Demircan, Ayhan; Morgner, Uwe; Rosanov, Nikolay (London : Nature Publishing Group, 2021)
    We study theoretically a possibility of creation and ultrafast control (erasing, spatial frequency multiplication) of population density gratings in a multi-level resonant medium having a resonance transition frequency in ...
  • Regularizing Aperiodic Cycles of Resonant Radiation in Filament Light Bullets 
    Brée, Carsten; Babushkin, Ihar; Morgner, Uwe; Demircan, Ayhan (American Physical Society, 2017)
    We demonstrate an up to now unrecognized and very effective mechanism which prevents filament collapse and allows persistent self-guiding propagation retaining a large portion of the optical energy on axis over unexpected ...
  • Scattering in twisted yangians 
    Avan, Jean; Doikou, Anastasia; Karaiskos, Nikos (Bristol : Institute of Physics Publishing, 2016)
    We study the bulk and boundary scattering of the sl(N) twisted Yangian spin chain via the solution of the Bethe ansatz equations in the thermodynamic limit. Explicit expressions for the scattering amplitudes are obtained ...
  • Search for multimessenger sources of gravitational waves and high-energy neutrinos with advanced LIGO during its first observing run, ANTARES, and IceCube 
    Albert, A.; André, M.; Anghinolfi, M.; Ardid, M.; Aubert, J.-J.; IceCube Collaboration; Adya, V. B.; Affeldt, Christoph; Aufmuth, Peter; Bergmann, G.; Biscoveanu, S.; Bisht, A.; Bode, N.; Booker, P.; Brinkmann, M.; Cabero, M.; Danilishin, Stefan L.; Dent, T.; Varona, O. de; Doravari, S.; Hanke, J.; Koehlenbeck, S.M.; Koper, N.; Kringel, V.; Kuehn, G.; Leavey, S.; Lehmann, J.; Lough, J.D.; Lück, H.; Mehmet, M.; Mukherjee, Arunava; Nery, M.; Ohme, F.; Oppermann, P.; Phelps, M.; Puncken, O.; Rüdiger, A.; Schreiber, E.; Schulte, B.W.; Setyawati, Y.; Standke, M.; Steinke, M.; Steinmeyer, D.; Thies, F.; Vahlbruch, H.; Wei, L.-W.; Weinert, M.; Wellmann, F.; Weßels, P.; Wilken, D.M.; Willke, B.; Wimmer, M.H.; Winkler, W.; Wittel, H.; Woehler, J.; Wu, D.S.; LIGO Scientific Collaboration; Virgo Collaboration; Hennig, M.; Heurs, J.; Junker, K.S.; Karvinen, S.; Kaufer, S.; Khan, R.; Kirchhoff, P.; Koch, M.M. (Bristol : IOP Publishing Ltd., 2019)
    Astrophysical sources of gravitational waves, such as binary neutron star and black hole mergers or core-collapse supernovae, can drive relativistic outflows, giving rise to non-thermal high-energy emission. High-energy ...
  • Semantic Representation of Physics Research Data 
    Say, Aysegul; Fathalla, Said; Vahdati, Sahar; Lehmann, Jens; Auer, Sören ([Setúbal] : SCITEPRESS - Science and Technology Publications, Lda., 2020)
    Improvements in web technologies and artificial intelligence enable novel, more data-driven research practices for scientists. However, scientific knowledge generated from data-intensive research practices is disseminated ...
  • Spatial dynamics of tuned and mistuned bladed disks with cylindrical and wedge-shaped friction dampers 
    Panning, Lars; Sextro, Walter; Popp, Karl (London : Hindawi Limited, 2003)
    One of the main tasks in the design of turbomachines like turbines, compressors, and fans is to increase the reliability and efficiency of the arrangement. Failures due to blade cracks are still a problem and have to be ...
  • Spontaneous symmetry breaking in spinor Bose-Einstein condensates 
    Scherer, Manuel; Lücke, Bernd; Peise, Jan; Topic, Oliver; Gebreyesus, Garu; Deuretzbacher, Frank; Ertmer, Wolfgang; Santos, Luis; Klempt, Carsten; Arlt, Jan J. (College Park, MD : American Physical Society, 2013)
    We present an analytical model for the theoretical analysis of spin dynamics and spontaneous symmetry breaking in a spinor Bose-Einstein condensate (BEC). This allows for an excellent intuitive understanding of the processes ...
  • Supersymmetric many-body Euler–Calogero–Moser model 
    Krivonos, Sergey; Sutulin, Anton; Lechtenfeld, Olaf (Amsterdam : Elsevier B.V., 2019)
    We explicitly construct a supersymmetric $so(n)$ spin-Calogero model with an arbitrary even number $\cal N$ of supersymmetries. It features $\frac{1}{2}{\cal N}n(n{+}1)$ rather than ${\cal N}n$ fermionic coordinates and a ...
  • Suppressing ghost beams: Backlink options for LISA 
    Isleif, Katharina-Sophie; Gerberding, Oliver; Penkert, D.; Fitzsimons, E.; Ward, H.; Robertson, D.; Livas, J.; Mueller, G.; Reiche, J.; Heinzel, Gerhard; Danzmann, Karsten (Bristol : Institute of Physics Publishing, 2017)
    In this article we discuss possible design options for the optical phase reference system, the so called backlink, between two moving optical benches in a LISA satellite. The candidates are based on two approaches: Fiber ...
  • The tetrahexahedric angular Calogero model 
    Correa, F.; Lechtenfeld, O. (Bristol : IOP Publ., 2017)
    We investigate the spherical reduction of the rational An-1 Calogero model. It defines a quantum superintegrable model of a particle trapped in one of n! spherical (n-2)-simplices on S n-2 in a special Sn -symmetric ...
  • Turbulent transport in the Gray Zone: A large-eddy model intercomparison study of the CONSTRAIN cold air outbreak case. 
    de Roode, Stephan R.; Frederikse, Thomas; Siebesma, A. Pier; Ackerman, Andrew S.; Chylik, Jan; Field, Paul R.; Fricke, Jens; Gryschka, Micha; Hill, Adrian; Honnert, Rachel; Krueger, Steven K.; Lac, Christine; Lesage, Andrew T.; Tomassini, Lorenzo (Washington, DC : American Geophysical Union (AGU), 2019)
    To quantify the turbulent transport at gray zone length scales between 1 and 10 km, the Lagrangian evolution of the CONSTRAIN cold air outbreak case was simulated with seven large eddy models. The case is characterized by ...
  • Uncertainty of the coefficient of band-to-band absorption of crystalline silicon at near-infrared wavelengths 
    Schinke, Carsten; Bothe, Karsten; Peest, Peter Christian; Schmidt, Jan; Brendel, Rolf (College Park, MD : American Institute of Physics, 2014)
    We present data of the coefficient of band-to-band absorption of crystalline silicon at 295 K in the wavelength range from 950 to 1350 nm and analyze its uncertainty. The data is obtained from measurements of reflectance ...