** Orlando Ragnisco **

1 **Personal Data**

• Date and Place of Birth: January 22, 1946, Rome (Italy)

• Marital Status: Married with Francesca Anania

• Home Address, phone: Via Iside 3, I-00184 Rome,
+39-06-7092381

• Present Position: Full Professor of Theoretical Physics and Mathematical Methods and
Models

• Work Address: Dipartimento di Fisica, Università di Roma TRE, Via della Vasca Navale 84,
I-00146-Roma, Italy

• e.mail, phone, mobile phone: ragnisco@fis.uniroma3.it,
+39-06-55177035, +39-3290582728

2 **Education**

• High School Diploma from Liceo Classico Virgilio",
Rome, 1964.

• MSc (Laurea) in Physics "cum Laude", Università La Sapienza", May 18, 1970
(Laurea Thesis in Theoretical Nuclear Physics)

• Further qualifications: Habilitation to High-School teaching in Mathematics and Physics (1974), R5 INFN (Istituto Nazionale di Fisica Nucleare) degree (1975),
Winner of a Junior Nato fellowship (1979).

3 **Academic Career, Teaching and other academic duties**

1. Research Assistant, Università La Sapienza", 1972-1977;

2. Temporary Associate Professor, Camerino and Sassari Universities, 1977-1979;

3. Assistant Professor, Università La Sapienza, 1979-1982;

4. Associate Professor, Università La Sapienza 1982-1992 and Università Roma Tre
1992-2000

5. Full Professor, Università Roma Tre, 2001–

6. Chair of the Ph.D. Committee for the “Dottorato di Ricerca in Fisica”, 2003-2007

He has taught “Mathematical Methods for Physicists” (1982-1990 and 1995-) “Classical Mechanics and Thermodynamics” (1991-1993),
“Electromagnetism” (1994– 95), “Nonlinear Dynamics” (1997-1998 and 2001-2002), “Physical
Applications of Group Theory” (2001-2002).

He has supervised 11 MSc Thesis (“Tesi di laurea") and 5 Ph.D. Thesis.

4 **Research Projects**

• Spokesman of the INFN theoretical research program RM41
“Nonlinear Evolution Equations
and Dynamical Systems”(1995-2011 )

• Roma TRE coordinator for the PRINs (Research Programs of National Interest) focussed on th interrelations between Integrability and Geometry“ 1999-2001, 2001-2003, 2006-2008, 2008-2010, 2011-2014 (National Leader: Boris Dubrovin)

• Italian Spokesman for the INFN-MICINN joint projects focussed on “Q-Algebras, Integrable Systems and Discrete Symmetries” 2003-
(Spanish Spokesman: Angel Ballesteros Castaneda)

• Italian Spokesman for the EINSTEIN-RFBR project “Integrable/solvable
Classical and Quantal Many-Body Problems and their integrable discretizations” 2007-2008
(Russian spokesman: Michail Olshanetsky).

• Previous Research Programs: local coordinator (Roma “La Sapienza” University) of the National Research Programs (funded by Italian Ministery of Public Education and Research) "Metodi analitici e tecniche di calcolo per lo studio delle onde nonlineari” (1982-1990) and "Problemi Matematici della Fisica” (1990-1993).

5 **Organization of International Conferences**

• Euroconferences NEEDS 97 and NEEDS 99 (International Workshops on Nonlinear Evolution
Equations and Dynamical Systems) held at the Orthodox Academy of Crete, Greece, resp. June 1997 and June 1999.

• SIDE III (Symmetries and Integrability of Difference Equations), Sabaudia near Rome, May 16-22, 1998.

• The Calogero-Moser System 30 years later , Rome , May 2001.

• Solitons, boomerons and isochronous solutions to nonlinear systems, Rome, February
2005.

• Recent Trends on Integrable Models, Miniworkshop, Burgos, Spain, April 7-8, 2008.

• Minisymposium on Integrable Systems, Int.conf.on Nonlinear Waves: Theory and Applications I and II, Beijing, July 9-12, 2008. and June 26-29, 2010.

• Co-organizer of the program Discrete Integrable Systems, held at Isaac Newton
Institute for Mathematical Sciences, Cambridge, UK, 19 January - 3 July 2009.
• Quantum Discrete Integrable Systems International Workshop in the framework
of the INI semester on Discrete Integrable Systems, held at Newton Institute, Cam-
bridge UK, April 22-27, 2009.

6 **Visits, Talks, Invited Talks**

*Visits to Universities and Research Institutions: *

1. M.I.T. Boston, USA, 2 months, 1973;

2. ITEP, Moscow, Russia, 1 month, 1979, 1981;

3. CRM, Montreal, Canada, 2-3 weeks, 1984, 1985, 1996,
1999;

4. Dept.Appl.Math., Princeton University, 2 weeks, 1984;
Math. Dept. Rockefeller University, 1 week, 1986

5. Dept.Math. Paderborn University (Germany),1-2 weeks,
1988, 1989, 1991

6. IMA, Minneapolis, 1 month, 1990

7. Dept.Math., Universite’ de Toulouse, France, 2 weeks,
1991.

8. Dept.Math, Loughborough, University, 3 weeks 1993

9. Dept.Math. and Centre for Nonlinear Studies, Leeds University, 2 weeks, 1988, 1996,1998

10.Laboratoire Geometrie Differentielle Applique'e, Paris VI, 1988, 1991, 1992, 1996 (1-2 weeks)

11. Centre for Complex Systems and Visualization, Bremen, 2 weeks, 1997.

12. Dept. Theor. Phys. II, UCM Madrid, 1985 (2 weeks),1999 (1 week), 2001 (4 months), 2002 (2 weeks), 2004, 2005.

13. Dept. Theor.Phys., Univ.Salamanca, 2005 (1 week),
Univ.Valladolid, 2006 (2 weeks), 2008 (1 weeek)

14. Dept. Phys. Univ. Burgos, 1998, and then 1-2 weeks each year starting from 2000 till 2007, 6 months (2007-2008).

*Talks and Invited Talks *

* *

O.Ragnisco has delivered more than 60 talks on his visits abroad or participations in Workshops and Conferences. Among these, about 30
were invited talks. The most recent ones (2000-)are:

1. “q-deformed spin chains and q-difference equations”, Invited talk Side IV, Tokyo,
Nov. 27 -Dec. 1, 2000 Organizers: J. Satsuma and T. Tokihiro

2. “Comodule algebra and integrable systems”, Plenary talk at Nonlinear Physics. Theory and Experiment, Gallipoli 2002, 27/6 6/7

3. “Supersymmetric Gaudin model”,
Invited talk at XXIV International Colloquium on Group Theoretical Methods in Physics (ICGTMP-2002),
Paris, July 15 to 20, 2002.

4. “Cluster variables and explicit solutions for q-deformed integrable models”,
Invited talk at Classifying 2002: Workshop on
classification on integrable systems, SISSA, Trieste October 1-5, 2002

5. “Integrable systems from co-algebra approach: a mean field interpretation",
Invited talk at Colloquium on Quantum Groups and
Integrable Systems, Prague June 11-15,2003.

6. “Exact discretization of Lagrange tops: an overview of the results”,
Invited talk at SIDE VI Helsinki 19/06/04 -24/06/04

7. “Classical and Quantum Backlund Transformations for Lagrange tops”,
seminar at "Departamento de Fisica Teorica II",
Univ.Compl.Madrid -Madrid, 13/05/04

8. “Exact time-discretization of the Lagrange top”,
invited talk at GNFM Workshop on Analytic and Geometric theory of the Camassa-Holm equation and Integrable Systems, Bologna, 22-25 september 2004.

9. “Q-Deformations and Integrable Motions on Manifolds with Curvature”,
Invited Talk at LOR conference 2006 Budapest, June 22-24, 2006

10.“Some recent developments on integrable systems”,
Invited talk at Conference GEOMIS 2006, Coimbra, July 17-19, 2006

11.“Classical Spin Chains and Related Integrable Models", Invited talk at Conference: INTEGRABLE SYSTEMS IN APPLIED MATHEMATICS, Madrid, September 6-12, 2006

12.I. “(Super-) Integrable Models on Curved Spaces from co-Algebras: a simple example and its explicit solution";

II “Recent results on Integrable Tops: Gaudin-Clebsh correspondence", Invited talks at Conference ISQS, June 14-18 2007, Prague

13.“Some results and remarks on Classical Integrable Systems” RAQIS 07 September 11-15, Annecy-Le-Vieux, France (Plenary Talk)

14.“Towards an r-matrix formulation for q-deformed Integrable Systems” Madrid 02-15-2008, UCM Dept. Fisica teorica II (seminar)

15. Bertrand spacetimes and superintegrability” joint work with A.Ballesteros, A.Enciso, F.J.Herranz, Invited Talk at Workshop “Superintegrable Systems in Classical and Quantum Mechanics Prague May 5-10, 2008”

16. “NEW RESULTS ON INTEGRABLE SYSTEMS” joint work with F.Zullo,
A.Enciso,A.Ballesteros and F.J.Herranz Workshop ENIGMA 08 Trieste, October 14-18 2008 (invited talk)

17. “An exact time-discretisation of the trigonometric Gaudin Model”, joint work
with F.Zullo, Workshop “INTEGRABLE SYSTEMS AND QUANTUM SYMMETRIES” Prague July 18-20 2009 (plenary talk)

18. “Backlund Transformations for trigonometric Gaudin model”, joint work with
F.Zullo, Workshop EINSTEIN at SISSA 2009, July 13-18 International School
for Advanced Studies, Trieste (plenary talk)

19. “An exact time discretization for the partially anisotropic Clebsch System”,
joint work with F.Zullo, talk delivered at Tsing-Hua University, Bejing, June
30, 2010

20.“Integrable Maps from Classical Gaudin Models”, with F.Zullo, talk delivered
at SIGMA PHI conference - Mathematical Physics Workshop, Larnaca, July
11-15, 2011 (invited talk)

21. “Backlund transformations in a ﬁnite-dimensional context: the Gaudin ex-
ample” talk delivered at the Workshop Solitons in 1+1 and 2+1 dimensions,
Lecce, 13-14 September, 2011 (invited talk)

7 **Research interests; scientific results; referee's activity **

** **

In the past, O.Ragnisco has been involved in Theoretical Nuclear Physics (1970– 1975), Quantum Many-Body Systems and Perturbation
Methods (1975-1977), Nonlinear Evolution Equations and Soliton Theory.
Starting from the 90's, he has focussed attention on Integrable Systems with finitely many degrees of freedom, their algebraic properties and their integrable
discretizations.

He is author of more than one hundred research papers published in “peer reviewed” journals, some 20 contributions to Proceedings of International Conferences, and a few invited contributions to books.

Recently, he has written the item “Discrete Integrable Systems", for the Encyclopedia of Mathematical Physics, eds. J.-P.Francoise, G.L. Naber and Tsou S.T., Oxford: Elsevier, 2006.

In addition, he serves as referee, on a regular basis for Journal of Physics A, Journal of Mathematical Physics, Physics Letters A.

Occasionally, he has reviewed papers for Communications in
Mathematical Physics, Europhysics Letters, International Journal of Theoretical Physics, Inverse Problems, Journal of Geometry and Physics, Letters in Mathematical
Physics, Modern Physics Letters, Nonlinearity, Nuclear Physics B.