SISSA Open Science

Browsing SISSA Preprints by Title

Browsing SISSA Preprints by Title

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  • Dell'Antonio, Gianfausto; Michelangeli, Alessandro; Scandone, Raffaele; Yajima, Kenji (2017-04-13)
    We prove that, for arbitrary centres and strengths, the wave operators for three dimensional Schrödinger operators with multi-centre local point interactions are bounded in Lp(R3) for 1 < p < 3 and unbounded otherwise.
  • Bonora, Loriano; Giaccari, Stefano; Tolla, Driba Demissie (SISSA, 2011-09-20)
    Recently a possible violation of the equation of motion for the recently proposed lump solutions in open SFT has been pointed out in the literature. In this paper we argue that, when the issue is considered in the appropriate ...
  • Petcov, Serguey T.; Shindou, Tetsuo; Takanishi, Yasutaka (2005)
    We consider the MSSM with see-saw mechanism of neutrino mass generation and soft SUSY breaking with flavour-universal boundary conditions at the GUT scale, in which the lepton flavour violating (LFV) decays µ → epsilon + ...
  • Controzzi, Davide; Mussardo, Giuseppe (2005)
    We extend form-factor perturbation theory to non-integrable deformations of massless integrable models, in order to address the problem of mass generation in such systems. With respect to the standard renormalisation group ...
  • Bellazzini, Brando; Riva, Francesco; Serra, Javi; Sgarlata, Francesco (2019-01-20)
    We construct the effective field theory for a single massive higher-spin particle in flat spacetime. Positivity bounds of the S-matrix force the cutoff of the theory to be well below the naive strong-coupling scale, forbid ...
  • Sachkov, Yuri L. (2007-03-02)
    The classical Euler's problem on stationary configurations of elastic rod with fixed endpoints and tangents at the endpoints is considered as a left-invariant optimal control problem on the group of motions of a twodimensional ...
  • Michelangeli, Alessandro; Olgiati, Alessandro (2016-02-02)
    We study the effective time evolution of a large quantum system consisting of a mixture of different species of identical bosons in interaction. If the system is initially prepared so as to exhibit condensation in each ...
  • Argurio, Riccardo; Bertolini, Matteo; Franco, Sebastian; Kachru, Shamit (2007-03-28)
    We consider quiver gauge theories arising on D-branes at simple Calabi-Yau singularities (quotients of the conifold). These theories have metastable supersymmetry breaking vacua. The field theoretic mechanism is basically ...
  • Bianchini, Stefano; Prerona, Dutta; Khai, Nguyen, T. (SISSA, 2020-12)
  • Amstutz, Samuel; Novotny, Antonio André; Van Goethem, Nicolas (SISSA, 2013-07-03)
    In this paper a new mathematically-founded method for the optimal partitioning of domains, with applications to the classification of greyscale and color images, is proposed. Since optimal partition problems are in general ...
  • Dal Maso, Gianni; De Luca, Lucia (SISSA, 2018-06)
    We prove the existence of weak solutions to the homogeneous wave equation on a suitable class of time-dependent domains. Using the approach suggested by De Giorgi and developed by Serra and Tilli, such solutions are ...
  • Dal Maso, Gianni; Morandotti, Marco (2016)
    We study a variational model for the quasistatic growth of cracks with fractional dimension in brittle materials. We give a minimal set of properties of the collection of admissible cracks which ensure the existence of a ...
  • Panico, Giuliano; Serone, Marco; Wulzer, Andrea (2005)
    We reconsider the idea of identifying the Higgs field as the internal component of a gauge field in the flat space [FORMULA] by relaxing the constraint of having unbroken SO(4,1) Lorentz symmetry in the bulk. In this way, ...
  • Andreini, Elena (SISSA, 2011-05-27)
    Let $\clX$ a projective stack over an algebraically closed field $k$ of characteristic 0. Let $\clE$ be a generating sheaf over $\clX$ and $\clO_X(1)$ a polarization of its coarse moduli space $X$. We define a notion of ...
  • Nironi, Fabio (2008-11-17)
    We introduce a notion of Gieseker stability for coherent sheaves on tame Deligne-Mumford stacks with projective moduli scheme and some chosen generating sheaf on the stack in the sense of Olsson and Starr \cite{MR2007396}. ...
  • Bartocci, Claudio; Bruzzo, Ugo; Rava, Claudio L.S. (2013)
    We define monads for framed torsion-free sheaves on Hirzebruch surfaces and use them to construct moduli spaces for these objects. These moduli spaces are smooth algebraic varieties, and we show that they are fine by ...
  • Henni, Abdelmoubine Amar (2009-03-25)
    We construct monads for framed torsion-free sheaves with fixed Chern character on the multi-blow-ups of the complex projective plane. Using these monads we prove that the moduli space of such sheaves is a smooth algebraic ...
  • Bianchini, Stefano; Cavalletti, Fabio (2010-06-07)
  • Santachiara, Raoul; Tanzini, Alessandro (2010-03-02)
    We identify Moore-Read wavefunctions, describing non-abelian statistics in fractional quantum Hall systems, with the instanton partition of N=2 superconformal quiver gauge theories at suitable values of masses and ...
  • Cicconofri, Giancarlo; DeSimone, Antonio (SISSA, 2014)
    Bristle-bots are legged robots that can be easily made out of a toothbrush head and a small vibrating engine. Despite their simple appearance, the mechanism enabling them to propel themselves by exploiting friction with ...

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