We ask 2.0 KEuro for Italian missions to partecipate
to the internal FI11 meetings, taking place twice a year,
and for the scientific exchanges with the Trieste FI11 group.** OK given **

A. Cappelli is asking 1.5KEuro for inviting P. Wiegmann
(U. Chicago) for a month for collaboration on the
 applications of the physics of the quantum Hall effect
to other problems such as the unstable out-of-equilibrium
 diffusion process of viscous fingering. ** 1KE given **

S. Ruffo is asking 1kEuro for inviting T. Dauxois (ENS
Lyon) for 2 weeks for collaborations on 
(scientific program is available at the page 
 http://arturo.fi.infn.it/cappelli/is) ** .5KE given **
 
M. Pettini is asking 1.5kEuro to invite R. Lima 
(CPT Luminy, Marseille) for one month to collaborate on
  ``Control of chaos and transport in thermonuclear fusion plasmas''.
(CV of R. Lima is available at the page 
 http://arturo.fi.infn.it/cappelli/is) ** .5KE given **
 
(CV of Dr. R. Lima is provided separately)

M. Zabzine is asking 2 KEuro for participating in
the conference "Strings 2003", Kyoto, Japan, July 2003. ** OK **

F. Colomo is asking 1.5 KEuro for inviting A. G. Pronko
for one month for collaboration on ``Exact results in
Integrable Models of Statistical Mechanics'' ** OK **
(CV  of Pronko is available at the page 
 http://arturo.fi.infn.it/cappelli/is)
 

We ask 2.0 KEuro for Italian missions to partecipate
to the internal FI11 meetings, taking place twice a year,
and for the scientific exchanges with the Florence FI11 group. ** OK **

G. Mussardo is asking 1KEuro for inviting V. Fateev
for one month for collaboration on ``Integrable nonlinear
sigma models'' ** OK **

Elenco Descrizione Attività:

                                   Sezione di FI
  FIRENZE FI11 2003 PROGRAM
  =========================

  - A. Cappelli, M. Riccardi, G.R. Zemba;
  ``Conformal field theories for the quantum Hall effect''
    Explore other physical applications of the Laughlin state and its
    characteristic W-infinity symmetry. Study the description offered by
    the non-commutative Chern-Simons field theory proposed by L. Susskind.
    Study the relation of Laughlin's plasma of vortices with confinement
    in gauge theories in 2+1 dimensions.

  - A.Cappelli, G. D'Appollonio, M. Zabzine
  ``Boundary conformal field theories''
    Develop a Landau-Ginzburg description of the boundary
    states and of the boundary renormalization-group flows.
    Proof that the boundary entropy monotonically decreases along these flows.

 - F. Colomo
  ``Frustated models and q-oscillators''
   Study of statistical models with frustration and no quenched disorder;
   possible applications of the q-deformed algebras to solve exactly
   statistical models with frustration. Application of the q-deformed
   oscillator to non trivial combinatorial problems.

 - M. Pettini, R. Franzosi, L. Casetti
 ``Topological theory of phase transitions''
   The singularities which appear at a thermodynamic phase transition can
   be attributed to special kinds of topology changes of equipotential
   submanifolds of configuration space, thus providing a more fundamental
   description of these phenomena with respect to measure-theoretic approaches.

 - M. Pettini, G. Ciraolo, R. Lima
 ``Control of chaos and transport in thermonuclear fusion plasmas''
   Development of open-loop control strategies of the anomalous chaotic
   transport of particles - transversally to the confining magnetic field -
   in thermonuclear controlled fusion devices of the tokamak type.

 - S. Ruffo, M. Antoni, J. Barre', T. Dauxois, M.C. Firpo, H. Hinrichsen,
   F. Leyvraz, D. Mukamel
  ``Dynamics and statistics in systems with long-range interactions''
   Long-range interactions lead to inequivalences between the canonical and
   microcanonical ensambles and to metastable states whose lifetime
   goes to infinity with the size of the system.

 - S. Ruffo, R. Khomeriki, S. Lepri
  ``Localized excitations in non-linear lattices''
    Clusters of ``breathers'' can be produced in the FPU lattices by
    exciting the modes at the band edges.

 - S. Ruffo, H. Larralde, F. Leyvraz, G. Martinez-Mekler, R. Rechtman
  ``Diffusion in the Lorentz gas model''
   The random walk model nicely represents the diffusive motion in
   the diluted Lorentz gas model.

 - S. Ruffo, D. Fanelli, M. Merafina
  ``Toy models of globular clusters''
    Adsorbing boundary conditions reproduce the King distributions of
    self-gravitating clusters.

 -F. Bagnoli, M. Bezzi, R. Rechtman, F. Cecconi, N. Boccara, , P. Palmerini
    ``Phase transitions for out-of-equilibrium systems and synchronization''
    We study the dynamics of out-of-equilibrium phase transitions both
    numerically and analytically by applying models of the synchronization
    problem.

 -  F. Bagnoli, F. Bochiccio, S. Bucci;
  ``Models for the sensitivity of passive radon detectors''
    Passive radon detectors are widely used for large-scale epidemic
    studies; we participate to a research project for deducing
    their sensitivity as a function of the specific features of
    detector, such that the geometry, the thicknes of the adsorber etc.

 -  M. Zabzine, C. Albertsson, U. Lindstrom
   ``Supersymmetric two-dimensional sigma models with boundaries''
    We study the most general solution for the N=1 supersymmetric boundary
    conditions in these models.
 
 
 
 

  PREPRINTS
  ==========

 A. Cappelli, M. Huerta, G. R. Zemba,

 ``Thermal Transport in Chiral Conformal Theories and Hierarchical
 Quantum Hall States'',
 preprint cond-mat/0111437, Nucl Phys B in press

 -R. Khomeriki, S. Lepri and S. Ruffo,
 ''Excitation of travelling multibreathers in anharmonic chains",
 to be published on Physica D (2002).

 -J. Barre', F. Bouchet, T. Dauxois and S. Ruffo
 "Birth and long-time stabilization of out-of-equilibrium coherent
 structures",
 to be published on Eur. Phys. J. B (2002).

 -M. Antoni, A. Torcini and S. Ruffo,
 "First and second order clustering transitions for a system with
 infinite-range attractive interactions",
 preprint (2002).

 -J. Barre', F. Bouchet, T. Dauxois and S. Ruffo,
 "Out-of-equilibrium states as statistical equilibria of an
 effective dynamics'',
 preprint (2002).

 - Cipriani P., Pettini M.
 ``Strong chaos in N-body problem and Microcanonical Thermodynamics of
 collisionless self-gravitating  systems'',
 Astrophysics and Space Science Rev., (2002) submitted

 - Clementi C., Pettini M.
 ``A geometric interpretation of integrable motions'',
 Celestial Mechanics, (2002) in press.

 - Ciraolo G., Pettini M.
 ``Geometry of chaos  in models of stellar dynamics'',
 Celestial Mechanics, (2002) in press.

 - Casetti L., Pettini M., E.G.D. Cohen
 ``Phase transitions and topology changes in configuration space'',
 J. Stat. Phys., (2002) submitted

 - Amato E., Pettini M., Salvati M.
 ``Non-collisional cross-field diffusion of relativistic electrons'',
 Astronomy & Astrophysics, (2002) submitted

 - Angelani l., Casetti L., Pettini M., Ruocco G., Zamponi F.
 ``Topological signature of First Order Phase Transitions'',
 Phys. Rev. Lett., (2002) submitted

 - M. Zabzine, C. Albertsson, U. Lindstrom,
 ``N=1 SUPERSYMMETRIC SIGMA MODEL WITH BOUNDARIES (I)'',
 preprint hep-th/0111161, to appear in Comm.Math.Phys.

 - M. Zabzine, C. Albertsson, U. Lindstrom,
 ``N=1 SUPERSYMMETRIC SIGMA MODEL WITH BOUNDARIES (II)'',
 preprint hep-th/0202069.
 
 

  PROCEEDINGS
  ===========

 -F. Bagnoli and R. Rechtman,
 ``Lyapunov exponents and synchronization of cellular automata
 in Complex Systems'',
 E. Goles and S. Martinez (eds), Nonlinear Phenomena and Complex
 Systems, vol. 6 (Kluwer, Dordrecht 2001) p. 69-104.

 -S. Ruffo,
 "The Fermi-Pasta-Ulam-Tsingou numerical experiment:
 Time-scales for the relaxation to thermal equilibrium",
 Proceedings of the ICRA Workshop ``Fermi and astrophysics'',
 Rome (2001), R. Ruffini and V. Gurzadyan eds.,
 World Scientific, to be published.

                                   Sezione di GE

 GENOVA FI11 2003 PROGRAM
 ========================

 - N. Magnoli, M. Caselle and P. Grinza
 ``Study of statistical models near criticality by using field theory''
 Study of the equation of state of the Ising model in two dimensions;
 comparison of analytic and numerical correlation functions in a magnetic field.

 - N. Magnoli, A. Cappelli and R. Guida
 ``Renormalization of the stress tensor in four dimensions and extension of
   the c-theorem''
   We found the general form of the stress-tensor 3-p. function;
   we plan to investigate the consequences of N=1 supersymmetry.

 - N. Magnoli, M. Merlo, E. Mariani, M. Sassetti
   ``Effects of the spin the quantum Hall effect''
   Developing the composite-fermion field theory approach, we are
   analyzing the effects of the spin of the electrons, and we provided
   an explanation of the plateaus in the spin polarization.
 

 PREPRINTS
 =========

 E. Mariani, N. Magnoli, F. Napoli, M. Sassetti and B. Kramer,
 ``Spin-pairing instability at the coincidence of two Landau levels'',
 preprint 2002 Dip. Genova
 
 
 

                                  Sezione di TS

  NEW RESEARCHERS
  ===============

  Paolo Grinza will join the group in the Fall 2002 as postdoc of SISSA
 

  TRIESTE FI11 2003 PROGRAM
  =========================

 ``Exact correlators in massive integrable models''
   Study of the spectral series for correlation functions, exact
   resummation and associated nonlinear differential equations.
   An inversion relation for the correlators of disorder operators in
   bosonic and fermionic theories has been derived within the form
   factor approach.

 ``Non-integrable quantum field theory''
   Formation of bound states and confinement of topological excitations,
   application to nonlinear sigma models with topologic terms within the
   framework of form factor perturbation theory.

 ``Quantum field theory at finite temperature''
   A recent numerical study has confirmed the theoretical predictions for
   the one-point functions. Future investigation should concentrate on
   the large distance, low-temperature expansion for the two-point functions.

 ``Field theory of scaling lattice models''
   Study of the role of lattice symmetries in the continuum limit of
   critical antiferromagnet; computation of universal characteristics of
   the scaling region; numerical investigation of analytic properties
   through the truncated conformal space approach.

 ``Boundary field theory and surface phase diagrams''
   Continue the study of the effects induced on field theories and strongly
   correlated systems by the boundary conditions. The case of theories with
   an infinite number of resonances has been recently investigated.
 

  PROCEEDINGS
  ===========

 G. Delfino, FIELD THEORY OF SCALING LATTICE MODELS: THE POTTS
 ANTIFERROMAGNET, proceedings of NATO Advanced Research Workshop on
 Statistical Field Theories, Como, Italy, 18-23 Jun 2001.

 D. Controzzi, F.H.L. Essler and A.M. Tsvelik, DYNAMICAL PROPERTIES OF
 ONE-DIMENSIONAL MOTT INSULATORS, in New Theoretical Approaches to Strongly
 Correlated Systems, Kluwer, 2001.