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Recent Submissions

  • Superfluid filaments of dipolar bosons in free space 

    Cinti, Fabio; Cappellaro, Alberto; Salasnich, Luca; Macri, Tommaso (American Physical Society, 2017)
    We systematically investigate the zero temperature phase diagram of bosons interacting via dipolar interactions in three dimensions in free space via path integral Monte Carlo simulations with a few hundreds of particles ...
  • Examination of evidence for collinear cluster tri-partition 

    Pyatkov, Yu. V.; Kamanin, D. V.; Alexandrov, A. A.; Alexandrova, I. A.; Goryainova, Z. I.; Malaza, V.; Mkaza, N.; Kuznetsova, E. A.; Strekalovsky, A. O.; Strekalovsky, O. V.; Zhuchko, V. E. (American Physical Society, 2017)
    Background: In a series of experiments at different time-of-flight spectrometers of heavy ions we have observed manifestations of a new at least ternary decay channel of low excited heavy nuclei. Due to specific features ...
  • Snake fangs : 3D morphological and mechanical analysis by microCT, simulation, and physical compression testing 

    Du Plessis, Anton; Broeckhoven, Chris; Le Roux, Stephan G. (Oxford University Press, 2018)
    This Data Note provides data from an experimental campaign to analyse the detailed internal and external morphology and mechanical properties of venomous snake fangs. The aim of the experimental campaign was to investigate ...
  • Emerging translational variance : vacuum polarization energy of the 𝜙6 kink 

    Weigel, H. (Hindawi, 2017-07-30)
    We propose an efficient method to compute the vacuum polarization energy of static field configurations that do not allow decomposition into symmetric and antisymmetric channels in one space dimension. In particular, we ...
  • Simple models of three coupled PT-symmetric wave guides allowing for third-order exceptional points 

    Schnabel, Jan; Cartarius, Holger; Main, Jorg; Wunner, Gunter; Heiss, Walter Dieter (Czech Technical University--Prague, 2017-08)
    We study theoretical models of three coupled wave guides with a PT-symmetric distribution of gain and loss. A realistic matrix model is developed in terms of a three-mode expansion. By comparing with a previously postulated ...
  • Proportional crosstalk for the iThemba LABS clover detector 

    Noncolela, S. P.; Bucher, T. D.; Lawrie, E. A.; Dinoko, T. R. S.; Easton, J. L.; Erasmus, N.; Lawrie, J. J.; Mthembu, S. H.; Mtshali, W. X.; Shirinda, O.; Orce, J. N. (Jagiellonian University, 2017-03)
    Measurements of the proportional crosstalk were performed for the iThemba LABS segmented clover detector. More than 1000 crosstalk parameters were determined and a crosstalk correction algorithm was implemented successfully.
  • Chiral bands in 193Tl 

    Ndayishimye, J.; Lawrie, E. A.; Shirinda, O.; Easton, J. L.; Wyngaardt, S. M.; Bark, R. A.; Bvumbi, S. P.; Dinoko, T. R. S.; Jones, P.; Kheswa, N. Y.; Lawrie, J. J.; Majola, S. N. T.; Masiteng, P. L.; Negi, D.; Orce, J. N.; Papka, P.; Sharpey-Schafer, J. F.; Stankiewicz, M.; Wiedeking, M. (Jagiellonian University, 2017-03)
    Since the introduction of chirality in nuclei, the search for chiral candidates in different mass regions has been a hot topic for about two decades. At iThemba LABS, a new chiral symmetry region, the thallium isotopes with ...
  • Spectroscopy of low lying states in 136Cs 

    Rebeiro, B.; Triambak, S.; Lindsay, R.; Adsley, P.; Burbadge, C.; Ball, G.; Bildstein, V.; Faestermann, T.; Garrett, P. E.; Hertenberger, R.; Radich, A.; Rand, E.; Varela, A.; Wirth, H.-F. (IOP Publishing, 2016)
    The low-lying excited states in 136Cs relevant to the double beta decay of 136Xe were studied via a 138Ba(d, α)136Cs transfer reaction with a high resolution magnetic spectrometer. Preliminary results from the experiment ...
  • Distorted-wave Born approximation study of the 11Li(p,t) 9Li reaction 

    Cowley, A. A. (IOP Publishing, 2016)
    The reaction 11Li(p,t) 9Li(gs) at an incident energy of 4 MeV is treated in terms of a simplistic distorted-wave Born approximation transfer. The halo neutrons involved in the reaction are treated as a di-neutron cluster ...
  • Diffusions conditioned on occupation measures 

    Angeletti, Florian; Touchette, Hugo (AIP, 2016-02)
    A Markov process fluctuating away from its typical behavior can be represented in the long-time limit by another Markov process, called the effective or driven process, having the same stationary states as the original ...
  • An overview of the first decade of PollyNET : an emerging network of automated Raman-polarization lidars for continuous aerosol profiling 

    Baars, Holger; Kanitz, Thomas; Engelmann, Ronny; Althausen, Dietrich; Heese, Birgit; Komppula, Mika; Preißler, Jana; Tesche, Matthias; Ansmann, Albert; Wandinger, Ulla; Lim, Jae-Hyun; Ahn, Joon Young; Stachlewska, Iwona S.; Amiridis, Vassilis; Marinou, Eleni; Seifert, Patric; Hofer, Julian; Skupin, Annett; Schneider, Florian; Bohlmann, Stephanie; Foth, Andreas; Bley, Sebastian; Pfüller, Anne; Giannakaki, Eleni; Lihavainen, Heikki; Viisanen, Yrjo; Hooda, Rakesh Kumar; Pereira, Sergio Nepomuceno; Bortoli, Daniele; Wagner, Frank; Mattis, Ina; Janicka, Lucja; Markowicz, Krzysztof M.; Achtert, Peggy; Artaxo, Paulo; Pauliquevis, Theotonio; Souza, Rodrigo A. F.; Sharma, Ved Prakesh; Van Zyl, Pieter Gideon; Beukes, Johan Paul; Sun, Junying; Rohwer, Erich G.; Deng, Ruru; Mamouri, Rodanthi-Elisavet; Zamorano, Felix (Copernicus Publications on behalf of the European Geosciences Union, 2016)
    The paper gives an overview of the observations on four continents and two research vessels obtained with eight Polly systems. The specific aerosol types at these locations (mineral dust, smoke, dust-smoke and other dusty ...
  • Laboratory X-ray micro-computed tomography : a user guideline for biological samples 

    Du Plessis, Anton; Broeckhoven, Chris; Guelpa, Anina; Le Roux, Stephan Gerhard (Oxford University Press, 2015)
    Laboratory X-ray micro-computed tomography (micro-CT) is a fast growing method in scientific research applications that allows for non-destructive imaging of morphological structures. This paper provides an easily operated ...
  • Defect-induced supersolidity with soft-core bosons 

    Cinti, F.; Macri, T.; Lechner, W.; Pupillo, G.; Pohl, T. (Nature Publishing Group, 2014)
    More than 40 years ago, Andreev, Lifshitz and Chester suggested the possible existence of a peculiar solid phase of matter, the microscopic constituents of which can flow superfluidly without resistance due to the formation ...
  • Self-healing of quantum entanglement after an obstruction 

    McLaren, Melanie; Mhlanga, Thandeka; Padgett, Miles J.; Roux, Filippus S.; Forbes, Andrew (Nature Publishing Group, 2014)
    Quantum entanglement between photon pairs is fragile and can easily be masked by losses in transmission path and noise in the detection system. When observing the quantum entanglement between the spatial states of photon ...
  • Heavy baryons with strangeness in a soliton model 

    Blanckenberg, J. P.; Weigel, H. (Elsevier, 2015-09)
    We present results from a chiral soliton model calculation for the spectrum of baryons with a single heavy quark (charm or bottom) and non-zero strangeness. We treat the strange components within a three flavor collective ...
  • Galactic production of 138La : Impact of 138,139La statistical properties 

    Kheswa, B. V.; Wiedeking, M.; Giacoppo, F.; Goriely, S.; Guttormsen, M.; Larsen, A. C.; Bello Garrote, F. L.; Eriksen, T. K.; Gorgen, A.; Hagen, T. W.; Koehler, P. E.; Klintefjord, M.; Nyhus, H. T.; Papka, P.; Renstrom, T.; Rose, S.; Sahin, E.; Siem, S.; Tornyi, T. (Elsevier, 2015)
    The γ-ray strength functions and nuclear level densities of 138La and 139La have been measured below the neutron separation energies. These new data were used to calculate astrophysical Maxwellian-averaged (n, γ) cross-sections ...
  • Process tomography via sequential measurements on a single quantum system 

    Bassa, Humairah; Goyal, Sandeep K.; Choudhary, Sujit K.; Uys, Hermann; Diosi, Lajos; Konrad, Thomas (American Physical Society, 2015-09-03)
    We utilize a discrete (sequential) measurement protocol to investigate quantum process tomography of a single two-level quantum system, with an unknown initial state, undergoing Rabi oscillations. The ignorance of ...
  • Interplay of soundcone and supersonic propagation in lattice models with power law interactions 

    Storch, David-Maximilian; Van den Worm, Mauritz; Kastner, Michael (Bristol : IOP Publishing, 2015-06-16)
    Westudy the spreading of correlations and other physical quantities in quantum lattice models with interactions or hopping decaying like r−α with the distance r.Our focus is on exponents α between 0 and 6, where the ...
  • Entanglement-enhanced spreading of correlations 

    Kastner, Michael (IOP Publishing, 2015-12-17)
    Starting from a product initial state, equal-time correlations in nonrelativistic quantum lattice models propagate within a light cone-like causal region. The presence of entanglement in the initial state can modify this ...
  • Duality constructions from quantum state manifolds 

    Kriel, J. N.; Van Zyl, H. J. R.; Scholtz, F. G. (Springer, 2015-11-20)
    The formalism of quantum state space geometry on manifolds of generalised coherent states is proposed as a natural setting for the construction of geometric dual descriptions of non-relativistic quantum systems. These state ...

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