- s.c.r. 12 settembre 2000, s.e 27 maggio 2008

Birth: March 9, 1949
in Alexandria (Egypt)

Nationality: Italian

Civil status: Married with Alessandra Turco; two sons, Pietro and Giulio.

Academic credentials: Laurea in Fisica "cum laude", obtained on June 20, 1972
at the University of Padova, Italy. Doctor in de Wetenschappen (Ph.D. with, greatest
distinction) on May 14, 1981 at the Katholieke Universiteit Leuven, Leuven, Belgium.

Current position: Full Professor (Professore Ordinario) of theoretical physics
(Meccanica Statistica). Physics Department, University of Padova (since November
1993). Courses in statistical mechanics.

Previous appointments (Italy) Full Professor (Professore Straordinario) of theoretical
physics (Teoria dei Campi). November 1990, Department of Physics, University of
Bologna. Courses in statistical physics.

Associate Professor of theoretical physics. March 1988, Department of Physics,
University of Padova. Courses in statistical mechanics and structure of matter.

Permanent Research Fellow (Ricercatore Confermato). 1981, Department of Physics,
University of Padova. Teaching activities in general physics and structure of
matter.

Temporary Research Fellow ( Borsista arrd Contrattista ministeriale). November
1972, Department of Physics, University of Padova. Instructor of theoretical physics.

Visiting positions abroad and in International Organizations:

April-July 1978: Visiting fellow at the Laboratorium voor Technische Natuurkunde,
University of Delft, The Netherlands, with a grant of the "A. Della Riccia" Foundation
(prof. J. M. J. van Leeuwen).

1978/79: Postdoctoral research fellow (postdoctoraal navorser) at the Institucit
voor Theoretische Fysica of the University of Leuven, Belgium.

1979/80 and 1980/81: Visiting professor (gastdocent) at the Instituut voor Theoretische
Fysica, University of Leuven, Belgium. Course on "Capita selecta uit de wiskundige
en theoretische natuurkunde" (advanced statistical mechanics).

June-July 1981, September 1984 , September 1985 and September 1986: Visiting fellow
(visiteur) at the Departement de Physique Theorique of the University of' Geneva,
Switzerland (prof. C. P. Enz).

March 1982: Visiting professor (Lector) at the Physics Department of the University
of Leuven, Belgium. 3rd Cycle course on "Special Topics in the theory of critical
phenomena and lattice models".

September-October 1983 and February 1984: Visiting fellow at the Theoretical Physics
Department of the University of Oxford, UK, with a fellowship of the Accademia
Nazionale dei Lincei - Royal Society (prof. R. B. Stinchconrbe).

November 1984: Visiting Professor at the Department of Physics, Pennsylvania State
University, State College, PA, USA (prof. M. W. Cole).

October-December 1985: Visiting Associate Professor at the Department of' Physics
and Astronomy, University of Maryland, College Park, MD, USA (prof. Th. L. Einstein).

March 1987 Visiting research fellow at the CBPF of Rio de Janeiro and the Physics
Departments of the Universities of Natal and Masseio (Brazil). Grant of CBPq,
Brazil (prof. C. Tsallis).

May-June 1987 Visiting Professor (Lector) at the University of Leuven (Belgium).
3rd Cycle course on "Fractals in Physics".

June-July and August-October 1988: Visiting research Fellow at the Department
of Physics and Astronomy, University of Maryland, MD, USA (prof. M.E. Fisher and
T.L. Einstein).

July 1988: Visiting research fellow at the Department of Physics, Pennsylvania
State University, State College, PA, USA (prof. M.W. Cole).

August-September 1992: Visiting research fellow at the Department of Physics,
Pennsylvania State University (Prof. M.W. Cole) and at the Department of Physics
and Astronomy, University of Maryland, (prof. T.L. Einstein).

September-October 1993: Visiting Fellow at the Physics Department of Penn State
University, State College, PA, USA (prof. R. J. Banavar).

February and April-May 1994: Visiting Fellow at the Physics Department, Oxford
University, UK. Grant of the Royal Society-Accademia Nazionale dei Lincei (prof.
J.M. Yeomans).

July 1994: Visiting Fellow at the Department of Physics, University of Maryland,
College Park (prof. T.L. Einstein).

June-July 1995: Visiting Fellow at the Department of Physics, University of Maryland,
College Park (prof. T.L. Einstein).

September-October 1995: Visiting Professor at the Instituut vor Theoretische Fysica,
Katholieke Universiteit Leuven, Belgium. Graduate course on "Many-body systems:
phase transitions, critical phenomena" at the "Institute for intensive theoretical
studies".

September 1996: Visiting Fellow at the Department of Physics, University of Maryland,
College Park, MD, USA (prof. T. L. Einstein).

August 1998: Visiting Fellow at the Department of Physics- Center for Polymer
Studies, Boston University, Boston, MA, USA (Padova-Boston exchange programme;
prof. H. E. Stanley).

September 1998: Visit to the Massachussets Institute of Technology, Harward, MA,
USA, supported by a "Bruno Rossi" fellowship (INFN-MIT exchange programme. prof.
M. Kardar).

October 1998- September 1999: Visiting Scientist at Abdus Salam I.C.T.P., Trieste,
in the Condensed Matter Theory Group.

Other teaching activities, in Italy and abroad:

1975/76: Instructor of mathematical methods of physics, at the University of Trento,
Italy.

1980/81: Professor at the Scuola di Perfezionamento in Fisica of the University
of Rome I. Course on "Complementi di Fisica Teorica" (Real space renormalization
group methods).

1981/82, 1982/83 and 1983/84: Professor at the Scuola di Perfezionamento in Fisica
of the University of Padova. Course on "Teoria degli stati aggregati" (critical
phenomena, phase transitions and renormalization group).

from academic year 1981/82 to present: Professor (professore incaricato supplente)
and/or external collaborator at the ISAS (International School for Advanced Studies),
Trieste, Italy. Graduate courses on "Statistical Mechanics","Fractals in Physics"
and "Polymer statistics".

1986/87 Course on "Fractals and Critical Phenomena" for the "Dottorato di Ricerca
in Fisica" (Ph.D. Program) at the Department of Physics, University of Milano,
Italy.

1988/89: Course on "Critical phenomena and the Renormalization Group" for the
Dottorato di Ricerca in Fisica at the Department of Physics, University of Roma
I. Italy.

June 1990: Course on "Advanced topics in Statistical Mechanics" for the "Dottorato
di Ricerca in Fisica" at the Department of Physics, University of Bologna, Italy.

June 1991: Short course on Wetting and Polymer Statistics at the Miniworkshop
on "Nonlinearity: Fractals, Pattern formation", ICTP, Trieste, Italy.

1990/91: Professor (interim) at the University of Padova. Course on Structure
of Matter.

July-August 1993: Course on "Statistical Mechanics of Random Surfaces, Vesicles
and Polymers" at the International School on "Recent Advances in Statistical Physics".
ITU, Istanbul, Turkey.

June 1996: Course on "Renormalization group and polymer statistics" at the Institute
for Mathematics and its Applications, University of Minnesota, Minneapolis. IMA
tutorial on "Topology and Statistical Mechanics of Polymers".

September 1997 Course on " Polymer Statistics" at the National Graduate School
of Condensed Matter Physics. INFM-ISI, Torino, Italy.

Scientific activity:

Author of about 110 papers in international refereed journals, and about 20 contributions
to proceedings and books (see attached list).

The research activity is in various fields of statistical physics and the contributions
can be partitioned according to the following main categories, or fields of interest.

Exact results or solutions of spin and gauge models on the lattice, of interest
for the physics of cooperative phenomena and for field theory. Among these one
can mention the exact demonstration that the Onsager-Yang spontaneous magnetization
coincides with the appropriate derivative of the free energy with respect to the
magnetic field in the two-dimensional Ising model. Another achievenent was the
first formulation and solution of a gauge analogue of a spin model on Cayley tree,
which provides an equivalent of the magnetic Bethe approximation for lattice gauge
theories.

Study of the renormalization group as a general method for the description of
the scaling properties of systems at criticality. Here one can mention the development
of exact static and dynamic renormalization methods for van der Waals spin models,
and the study of Griffiths-Pearce singularities (peculiarities) performed on the
same systems.

Formulations of the renormalization group for quantum statistical systems (Heliurn4,
XY model, Hubbard model). In this context an explicit demonstration was given
that quantum effects are irrelevant in determining the universality class of the
lambda transition of Helium4. Another achievement was the formulation of the first
renormalization group approaches to quantum spin systems at finite temperature,
and the clarification of their connections with zero temperature methods.

Optimization criteria and new appproximate methods of the renormalization group.
The most remarkable contribution has been the proposal of the new approach, generally
known as mean field renormalization group (MFRG). For the first time in the history
of critical phenomena, in this approach the mathematical and conceptual apparatus
of classical theories is directly addressed to carry on Wilson's renormalization
strategy. This very flexible method has been extensively applied in the literature
during the last two decades. Applications, which are still going on, concern a
variety of physical contexts, ranging from quantum magnets, to disordered systems
and amphiphilic monolayers.

Criteria for distinguishing between continuous and discontinuous transitions,
improvements of classical approximations, including Onsager's reaction field.

Conformational properties of linear and branched polymers. In this field a large
number of substantial results has been obtained. Particular impact has had the
full exact determination of universal scaling behavior at the theta collapse of
linear polymers in two dimensiona. This has been achieved on the basis of original
correspondences between percolation theory and the interacting polymer problem.
Another substantial achievement has been the prediction of a new type of collapse
from linear to branched structure for polymers with competing interactions. Such
collapse, which has been widely discussed in the recent literature, is expectd
to have particular relevance in the context of heteropolymer and protein models.

Models of membranes, vesicles and random surfaces. Here some important relations
between vesicle statistics and lattice gauge problems have been discovered and
applied to the study of topological and metric properties. The work on the critical
properties of models of latticized random surfaces has been quite pioneeristic
and inspired important subsequent developments. A review of the rich activity
in this field has been recently given in a whole chapter of a recent monography
( C. Vanderzande, " Lattice Models of polymers", Cambridge University Press, Cambridge,1998).

Critical phenomena at boundary surfaces, consequenches of conformal invariance
in two dimensions. Here the most important result has been the determination of
the exact value of the fractal dimension of the clusters associated to critical
fluctuations of Ising spins in two dimensiona. This fractal dimension was determined
more than fourty years since Onsager solved the model.

Anomalous diffusion and logarithmic localization on fractal and hierarchical structures.
Here the problem of Hubermann-Kerszberg's "ultradiffusion" in one dimension has
been exactly solved for the first time by a dynamical renormalization group method.
Also the existence of Sinai-like logarithmic diffusion for a particle subject
to a biasing field on fractal structure lias been demonstraed in suitable models.

Interfacial and wetting phenomena. Of particular impact has been a recent study
of the the effects of randomness on the interface fluctuations of ferromagnetic
systems with more than two coexisting phases. This study proposes an original
mechanism explaining very puzzling universality issues concerning the critical
behavior. Another set of results concerns the wetting of fractally and self-affine
rosigli surfaces. For the latter, in particular, the existence of an unexpected,
roughtiess induced first-order wetting transition has been both numerically and
analytically demonstrated.

Self-organized criticality. A large part of the most recent research is concentrated
in this field. The results range front the determination of boundary scaling exponents
for avalanche activity in sandpile models, to the formulation and solution of
the, so called, inhomogeneous branching process, which has also interest per se
in the context of probability theory. The models considered have applicative interest
for fields like biological evolution and earthquake statistics. Of particular
importance has been the discovery that prototype models like the Bak-Tang-Wiesenfeld
sandpile, rather than obeying simple finite size scaling, like assumed in the
literature of the last decade, show an unexpected form a multifractal scaling.
The original analysis the Bak-Tarig-Wiesenfeld sandpile and of other similar models
allowed to identify two different dynamical mechanisms of avalanche dynamics,
leading to simple finite size and to rnultifractal scaling, respectively.

Heteropolymer models. The statistics of these models is of much current interest
for problems like protein folding and polyampholites. The research in this field
concentrated on understanding the cole of sequence inhomogeneities and disorder
in determining the universal scaling properties at conformational transitions.
A main recent achievement has been here the identification of a new, frustration
dominated universality class of theta behavior for polymers with sequence disorder.
This class is different from that appropriate for homogeneous polymers. Other
results concern the prediction and characterization of a new type of collapse
for block-copolymers and its connection with percolation theory in two dimensions.

Grants and organization activity:

Responsible of grants from NATO (Italy-US collaboration), INFM, and the Italian
Ministry of University and Scientific Research. Member of the EU TMR network on
"Fractals and self-organization". Member of the national commettee (Giunta) of
the G-section ( theoretical condensed matter physics and cybernetics) of INFM.
Local responsible of an INFN (Gruppo quarto) initiative and of an INFM research
line. Organizer of international meetings and workshops at ISI, Torino, INFM-Forum,
Florence, and Abdus Salam ICTP, Trieste. Member of graduate studies committee
( Collegio dei Docenti del Dottorato di Ricerca in Fisica) at the Universities
of Bologna and Padova. Coordinator of graduate studies (Coordinatore del Dottorato
di Ricerca in Fisica) at the Physics Department of Padova University.

Ph. D. theses supervised:

J. O. Indekeu. Static and dynamic renormalization from correlation functions and
molecular fields. Leuven, 1983.

C. Vanderzande. Applications of the renormalization group in position space to
quantum spin systems on a lattice. Leuven, 1984.

G. Giugliarelli. Fractally rough surfaces: wetting, adsorption and spectral properties.
ISAS-Trieste, 1990.

F. Seno. Interacting models of self-avoiding paths and surfaces on the lattice:
multicritical properties and universality. Padova, 1992.

M. C. Tesi. Statistical models of polymers on the lattice: universality problems
and multicritical phenomena. Bologna, 1993.

E. Orlandini. Universality, topology and multicritical properties of lattice rnodels
of self-avoiding surfaces and vesicles. Bologna, 1993.

G. Caldarelli. From self-organized criticality to pattern formation. Theoretical
aspects and occurrence in nature. ISAS-Trieste, 1996.

G. Sartoni. Universality and interfaces in disordered media. Bologna 1996.

C. Tebaldi. Rare events dominance in non-equiluibrium critical phenomena. ISAS-Trieste,
1997.

P. Monari. Universality of heteropolymer theta collapse transitions. Padova, 1999.

M. De Menech. Multifractality and universality in sandpiles. Padova, 2000.