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Effective theoretical approach of Gauge-Higgs unification model and its phenomenological applications

Haba, Naoyuki; Matsumoto, Shigeki; Okada, Nobuchika; Yamashita, Toshifumi (2005)

We derive the low energy effective theory of Gauge-Higgs unification (GHU) models in the usual four dimensional framework. We find that the theories are described by only the zero-modes with a particular renormalization ...

Derivation of a rod theory for phase-transforming materials

Mora, Maria Giovanna; Müller, Stefan (2005)

A rigorous derivation is given of a rod theory for a multiphase material,starting from three-dimensional nonlinear elasticity. The stored energy density is supposed to be nonnegative and to vanish exactly on a set consisting ...

Aspects of Finite Temperature Quantum Field Theory in a Black Hole Background

Milanesi, Giuseppe; Mintchev, Mihail (2005)

We quantize a scalar field at finite temperature T in the background of a classical black hole, adopting 't Hooft's "brick wall" model with generic mixed boundary conditions at the brick wall boundary. We first focus on ...

Chan-Paton factors and Higgsing from Vacuum String Field Theory

Maccaferri, Carlo (2005)

We give a description of open strings stretched between N parallel D-branes in VSFT. We show how higgsing is generated as the branes are displaced: the shift in the mass formula for on-shell states stretched between different ...

Majorana CP-Violating Phases, RG Running of Neutrino Mixing Parameters and Charged Lepton Flavour Violating Decays

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 + ...

Large Parameter Behavior of Equilibrium Measures

Grava, Tamara; Tian, Fei-Ran (2005)

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, ...

Numerical solution of the small dispersion limit of Korteweg de Vries and Whitham equations

Grava, Tamara; Klein, Christian (2005)

The Cauchy problem for the Korteweg de Vries (KdV) equation with small dispersion of order $\epsilon^2$, is characterized by the appearance of a zone of rapid modulated oscillations of wave-length of order $\epsilon$. These ...

From current algebra for p-branes to topological M-theory

Bonelli, Giulio; Zabzine, Maxim (2005)

In this note we generalize a result by Alekseev and Strobl for the case of $p$-branes. We show that there is a relation between anomalous free current algebras and "isotropic" involutive subbundles of $T\oplus \wedge^p ...

Enhancement of lepton flavor violation in a model with bi-maximal mixing at the grand unification scale

Kanemura, Shinya; Matsuda, Koichi; Ota, Toshihiko; Shindou, Tetsuo; Takasugi, Eiichi; Tsumura, Koji (2005)

We study phenomenological predictions in the scenario with the quasi-degenerate relation among neutrino Dirac masses, m_D1 simeq m_D2 < m_D3, assuming the bi-maximal mixing at the grand unification scale in supersymmetric ...

Multiscale homogenization of convex functionals with discontinuous integrand

Barchiesi, Marco (2005)

This article is devoted to obtain the $\Gamma$-limit, as $\epsilon$ tends to zero, of the family of functionals $$F_{\epsilon}(u)=\int_{\Omega}f\Bigl(x,\frac{x}{\epsilon},..., \frac{x}{\epsilon^n},\nabla u(x)\Bigr)dx$$, ...

On a Camassa-Holm type equation with two dependent variables

Falqui, Gregorio (2005)

We consider a generalization of the Camassa Holm (CH) equation with two dependent variables, called CH2, introduced in [16]. We briefly provide an alternative derivation of it based on the theory of Hamiltonian structures on ...

N=1 superpotentials from multi-instanton calculus

Fucito, Francesco; Morales, Jose F.; Poghossian, Rubik; Tanzini, Alessandro (2005)

In this paper we compute gaugino and scalar condensates in N = 1 supersymmetric gauge theories with and without massive adjoint matter, using localization formulae over the multi-instanton moduli space. Furthermore we ...

Multiple solutions for the scalar curvature problem on the sphere

Ndiaye, Cheikh Birahim (2005)

We study the existence of solutions for the prescribed scalar curvature problem on Sn with n ≥ 3. We prove that given an arbitrary K0 ∈ C2(Sn), K0 > 0, any positive ϵ, any α in (0, 1), and any integer l we can find such ...

Vanishing viscosity solutions of a 2 x 2 triangular hyperbolic system with Dirichlet conditions on two boundaries

Spinolo, Laura (2005)

We consider the 2 x 2 parabolic systems [] on a domain (t, x) [] with Dirichlet boundary conditions imposed at x = 0 and at x = l. The matrix A is assumed to be in triangular form and strictly hyperbolic, and the boundary ...

Stability of planar nonlinear switched systems

Boscain, Ugo; Charlot, Grégoire; Sigalotti, Mario (2005)

We consider the time-dependent nonlinear system ˙ q(t) = u(t)X(q(t)) + (1 − u(t))Y (q(t)), where q ∈ R2, X and Y are two smooth vector fields, globally asymptotically stable at the origin and u : [0,∞) → {0, 1} is an ...

Theoretical Prospects of Neutrinoless Double Beta Decay

Petcov, Serguey T. (2005)

The compelling experimental evidences for oscillations of solar and atmospheric neutrinos imply the existence of 3-neutrino mixing in vacuum. We briefly review the phenomenology of 3-v mixing, and the current data on the ...

Conifold geometries, matrix models and quantum solutions

Bonelli, Giulio; Bonora, Loriano; Ricco, Antonio (2005)

This paper is a continuation of hepth/0507224 where open topological B-models describing D-branes on 2-cycles of local Calabi--Yau geometries with conical singularities were studied. After a short review, the paper expands ...

Some properties of generating functions obtained by Amann-Conley-Zehnder reduction

Bettiol, Piernicola (2005)

From BRST to light-cone description of higher spin gauge fields

Barnich, Glenn; Bonelli, Giulio; Grigoriev, Maxim (2005)

In this short note we show, at the level of action principles, how the lightcone action of higher spin gauge fields can easily be obtained from the BRST formulation through the elimination of quartets. We analyze how the ...

A Note on T-duality in Heterotic String Theory

Serone, Marco; Trapletti, Michele (2005)

We revisit the T-duality transformation rules in heterotic string theory, pointing out that the chiral structure of the world-sheet leads to a modification of the standard Buscher's transformation rules. The simplest ...

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