Wyświetlanie pozycji 1-20 z 39

    • “Isochronic” dynamical systems and nullification of amplitudes 

      Domienik, Joanna; Kosiński, Piotr (North-Holland, 2003)
      We construct the set of theories which share the property that the tree-level threshold amplitudes nullify even if both initial and final states contain the same type of particles. The origin of this phenomenon lies in ...
    • Induced gravity and gauge interactions revisited 

      Broda, Bogusław; Szanecki, Michał (North-Holland, 2009)
      It has been shown that the primary, old-fashioned idea of Sakharov's induced gravity and gauge interactions, in the “one-loop dominance” version, works astonishingly well yielding phenomenologically reasonable results. As ...
    • Quantum gravity stability of isotropy in homogeneous cosmology 

      Broda, Bogusław (North-Holland, 2011)
      It has been shown that anisotropy of homogeneous spacetime described by the general Kasner metric can be damped by quantum fluctuations coming from perturbative quantum gravity in one-loop approximation. Also, a formal ...
    • Scaling violation and the inelasticity of very high energy proton–proton interactions 

      Wibig, Tadeusz (North-Holland, 2011)
      The pseudorapidity measurements at LHC, although in the central region only, allows us to perform preliminary tests of the multiparticle production extrapolation formula inspired by the analysis of recent cosmic ray data. ...
    • On the triviality of higher-derivative theories 

      Andrzejewski, Krzysztof; Gonera, Joanna; Machalski, Piotr; Bolonek-Lasoń, Katarzyna (North-Holland, 2012)
      The higher-derivative theories with degenerate frequencies exhibit BRST symmetry [V.O. Rivelles, Phys. Lett. B 577 (2003) 147]. In the present Letter meaning of BRST-invariance condition is analyzed. The BRST symmetry is ...
    • Ultrahigh Energy Neutrinos at the Pierre Auger Observatory 

      Abreu, P.; Ahlers, M.; Aglietta, M.; Ahn, E. J.; Albuquerque, I. F. M.; Allard, D.; Allekotte, I.; Allen, J.; Allison, P.; Almela, A.; Alvarez Castillo, J.; Alvarez-Muñiz, J.; Alves Batista, R.; Ambrosio, M.,; Aminaei, A.,; Anchordoqui, L.,; Andringa, S.,; Anticić, T.; Aramo, C.; Arganda, E.,; Arqueros, F.; Asorey, H.; Assis, P.; Aublin, J.; Ave, M.; Avenier, M.; Avila, G.; Bäcker, T.; Badescu, A. M.; Balzer, M.; Barber, K. B.; Barbosa, A. F.; Bardenet, R.; Barroso, S. L. C.; Baughman, B.; Bäuml, J.; Beatty, J. J.; Becker, B. R.; Becker, K. H.; Bellétoile, A.; Bellido, J. A.; BenZvi, S.; Berat, C.; Bertou, X.; Biermann, P. L.; Billoir, P.; Blanco, F.; Blanco, M.; Bleve, C.; Blümer, H.; Boháčová, M.; Boncioli, D.; Bonifazi, C.; Bonino, R.; Borodai, N.; Brack, J.; Brancus, I.; Brogueira, P.; Brown, W. C.; Bruijn, R.; Buchholz, P.; Bueno, A.; Burton, R. E.; Giller, M.; Śmiałkowski, A.; Szadkowski, Z. (Hindawi Publishing Corporation, 2012-06-25)
      The observation of ultrahigh energy neutrinos (UHE𝜈�s) has become a priority in experimental astroparticle physics. UHE𝜈�s can be detected with a variety of techniques. In particular, neutrinos can interact in the ...
    • Semientwining Structures and Their Applications 

      Nichita, Florin F.; Parashar, Deepak; Zieliński, Bartosz (Hindawi Publishing Corporation, 2012-10-31)
      Semientwining structures are proposed as concepts simpler than entwining structures, yet they are shown to have interesting applications in constructing intertwining operators and braided algebras, lifting functors, ...
    • Thermal induced structural and magnetic transformations in Fe_{73.5−x}Ce_{x=0,3,5,7}Si_{13.5}B_9Nb_3Cu_1 amorphous alloy 

      Antoszewska, Małgorzata; Wasiak, Michał; Gwizdałła, Tomasz; Sovak, Pavol; Moneta, Marek (Springer Netherlands, 2013)
      Structural and magnetic properties of amorphous and partly crystallized Fe_{73.5−x}Ce_{x=0,3,5,7}Si_{13.5}B_9Nb_3Cu_1 alloys, were analysed in the temperature ranging from RT to 800 °C with scanning calorimetry and ...
    • Perturbative quantum damping of cosmological expansion 

      Broda, Bogusław (North-Holland, 2014)
      Perturbative quantum gravity in the framework of the Schwinger–Keldysh formalism is applied to compute lowest-order corrections to expansion of the Universe described in terms of the spatially flat Friedman–Lemaître–Robe ...
    • Conformal Newton–Hooke symmetry of Pais–Uhlenbeck oscillator 

      Andrzejewski, Krzysztof; Galajinsky, A.; Gonera, Joanna (North-Holland, 2014)
      It is demonstrated that the Pais–Uhlenbeck oscillator in arbitrary dimension enjoys the l -conformal Newton–Hooke symmetry provided frequencies of oscillation form the arithmetic sequence ωk=(2k−1)ω1, where k=1,…,n, and ...
    • Hidden Lorentz symmetry of the Hořava–Lifshitz gravity 

      Rembieliński, Jakub (North-Holland, 2014)
      In this Letter it is shown that the Hořava–Lifshitz gravity theory admits Lorentz symmetry preserving preferred global time foliation of the spacetime.
    • Modalities for an Allegorical Conceptual Data Model 

      Zielińsk, Bartosz; Maślanka, Paweł; Sobieski, Ścibor (MDPI AG, 2014)
      Allegories are enriched categories generalizing a category of sets and binary relations. In this paper, we extend a new, recently-introduced conceptual data model based on allegories by adding support for modal operators ...
    • Further studies of the photoproduction of isolated photons with a jet at HERA 

      Abramowicz, H.; Abt, I.; Adamczyk, L.; Ciborowski, J.; Perlanski, W. (Springer Science+Business Media on behalf of the Scuola Internazionale Superiore di Studi Avanzati, 2014)
      In this extended analysis using the ZEUS detector at HERA, the photoproduction of isolated photons together with a jet is measured for different ranges of the fractional photon energy, x_γ^{meas}, contributing to the ...
    • Weak n-Ary Relational Products in Allegories 

      Zieliński, Bartosz; Maślanka, Paweł (MDPI AG, 2014)
      Allegories are enriched categories generalizing a category of sets and binary relations. Accordingly, relational products in an allegory can be viewed as a generalization of Cartesian products. There are several definitions ...
    • Conformal Newton–Hooke algebras, Niederer's transformation and Pais–Uhlenbeck oscillator 

      Andrzejewski, Krzysztof (Elsevier B.V., 2014)
      Dynamical systems invariant under the action of the l-conformal Newton–Hooke algebras are constructed by the method of nonlinear realizations. The relevant first order Lagrangians together with the corresponding Hamiltonians ...
    • Measurement of beauty and charm production in deep inelastic scattering at HERA and measurement of the beauty-quark mass 

      Abramowicz, H.; Abt, I.; Adamczyk, L.; Ciborowski, J.; Perlanski, W. (Springer Science+Business Media on behalf of the Scuola Internazionale Superiore di Studi Avanzati, 2014)
      The production of beauty and charm quarks in ep interactions has been studied with the ZEUS detector at HERA for exchanged four-momentum squared 5 < Q^2 < 1000 GeV^2 using an integrated luminosity of 354 pb^{−1}. The ...
    • Constrains for non-standard statistical models of particle creations by identified hadron multiplicity results at LHC energies 

      Wibig, T (Springer Berlin Heidelberg, 2014)
      We analyzed the identified hadron multiplicity predictions of the modified thermodynamical model of the multiparticle production processes with non-extensive statistic. The replacement of the standard Boltzmann exponential ...
    • Search for patterns by combining cosmic-ray energy and arrival directions at the Pierre Auger Observatory 

      Aab, A.; Abreu, P.; Aglietta, M.; Giller, Maria; Śmiałkowski, Andrzej; Szadkowski, Zbigniew; Winchen, T. (Springer Berlin Heidelberg, 2014)
      Energy-dependent patterns in the arrival directions of cosmic rays are searched for using data of the Pierre Auger Observatory. We investigate local regions around the highest-energy cosmic rays with E≥6×10^19 eV by ...