SISSA Preprints

Browsing by Title

Browsing by Title

Sort by: Order: Results:

  • Parodi, Adriano (2007-11-14)
    Solutions of the Vacuum String Field Theory (VSFT) equation of motion involving matter part are given by projectors, and they represent nonperturbative solutions (e.g. the sliver) interpreted as D25-branes (or lower ...
  • Michelangeli, Alessandro (2015-12-02)
    The core results of the so-called Krein-Vishik-Birman theory of self-adjoint extensions of semi-bounded symmetric operators are reproduced, both in their original and in a more modern formulation, within a comprehensive ...
  • Gallone, Matteo; Michelangeli, Alessandro; Ottolini, Andrea (2017)
    The core results of the so-called KreIn-Visik-Birman theory of self-adjoint extensions of semi-bounded symmetric operators are reproduced, both in their original and in a more modern formulation, within a comprehensive ...
  • Caruso, Noe; Michelangeli, Alessandro (SISSA, 2020-01-23)
    The abstract issue of ‘Krylov solvability’ is extensively discussed for the inverse problem Af = g where A is a (possibly unbounded) linear operator on an infinite-dimensional Hilbert space, and g is a datum in the range ...
  • Bianchini, Stefano; Bonicatto, Paolo; Marconi, Elio (2017-08)
  • Berti, Massimiliano; Kappeler, Thomas; Montalto, Riccardo (2016)
    We prove that small, semi-linear Hamiltonian perturbations of the defocusing nonlinear Schr\"odinger (dNLS) equation on the circle have an abundance of invariant tori of any size and (finite) dimension which support ...
  • Grava, Tamara; Tian, Fei-Ran (2006-03-30)
    We study the equilibrium measure for a logarithmic potential in the presence of an external field V*(x) + tp(x), where t is a parameter, V*(x) is a smooth function and p(x) a monic polynomial. When p(x) is of an odd degree, ...
  • Pascoli, Silvia; Petcov, Serguey T.; Riotto, Antonio (2006-12-07)
    Taking into account the recent progress in the understanding of the lepton flavour effects in leptogenesis, we investigate in detail the possibility that the CP-violation necessary for the generation of the baryon asymmetry ...
  • Dominguez, C. A. (SISSA, 1993-09-14)
    An update is given of the determination of leptonic decay constants of charm and beauty mesons in the framework of relativistic Hilbert moments and Laplace transform QCD sum rules.
  • Bonora, Loriano; Scherer Santos, Ricardo Jose; Sorin, Alexander S.; Tolla, Driba Demissie (2006-03-23)
    We show that the three strings vertex coefficients in light-cone open string field theory satisfy the Hirota equations for the ispersionless Toda lattice hierarchy. We show that Hirota equations allow us to calculate the ...
  • Caponi, Maicol (2017-01)
    We consider the hyperbolic system $\ddot u-{\rm div}\,(\mathbb A\nabla u)=f$ in the time varying cracked domain $\Omega\setminus\Gamma_t$, where the set $\Omega\subset\mathbb R^d$ is open, bounded, and with Lipschitz ...
  • Alicandro, Roberto; Dal Maso, Gianni; Lazzaroni, Giuliano; Palombaro, Mariapia (2017-06)
    Linear elasticity can be rigorously derived from finite elasticity under the assumption of small loadings in terms of Gamma-convergence. This was first done in the case of one-well energies with super-quadratic growth and ...
  • Bonelli, Giulio; Tanzini, Alessandro; Zhao, Jian (SISSA, 2011-07-11)
    We analyze conformal blocks with multiple (semi-)degenerate field insertions in Liouville/Toda conformal field theories an show that their vector space is fully reproduced by the four-dimensional limit of open topological ...
  • Di Castro, Agnese; Kuusi, Tuomo; Palatucci, Giampiero (SISSA, 2014-03-10)
    We extend the De Giorgi-Nash Moser theory to nonlocal, possibly degerate integro-differential operators
  • D'Andrea, Francesco; Dabrowski, Ludwik (2006-03-30)
    We discuss spectral properties of the equatorial Podles sphere. As a preparation we also study the `degenerate' (i.e. $q=0$) case (related to the quantum disk). We consider two different spectral triples: one related to ...
  • Cotti, Giordano; Dubrovin, Boris; Guzzetti, Davide (SISSA, 2018-01)
    There is a conjectural relation, formulated by the second author, between the enumerative geometry of a wide class of smooth projective varieties and their derived category of coherent sheaves. In particular, there is an ...
  • Barchiesi, Marco (2006-04-18)
    This article is devoted to the study of the asymptotic behavior of the zero-energy deformations set of a periodic nonlinear composite material. We approach the problem using two-scale Young measures. We apply our analysis ...
  • Itoh, Hideo; Okada, Nobuchika; Yamashita, Toshifumi (2006-06-20)
    We propose a scenario of gravity mediated supersymmetry breaking (gravity mediation) in a supersymmetric Randall-Sundrum model. In our setup, both of the visible sector and the hidden sector co-exist on the infrared (IR) ...