Stefano Pasquali
e-mail: stefano.pasquali(at)universite-paris-saclay.fr
Current position:
October 2022 - September 2024: Post-doc researcher at "Université Paris-Saclay" (Orsay, France). Fellowship funded by the MathInGreaterParis Fellowship Programme, cofunded by Marie Sklodowska-Curie Actions H2020-MSCA-COFUND-2020. Supervisor: Prof. Patrick Gérard Secondments and travel fundings: 3600 euros secondment fundings by the Fondation Mathématiques Jacques Hadamard (FMJH)Office: 2H1Université Paris-Saclay, CNRS, Laboratoire de mathématiques d’Orsay, 91405, Orsay, France
Research interests:
Mathematical Fluid dynamics
Water waves with vorticity
Hamiltonian PDEs
Birkhoff Normal Form Theory
Long time dynamics of dispersive PDEs
Energy transfer among Fourier modes
Dynamical systems
Fermi-Pasta-Ulam problem
Multidimensional Hamiltonian lattices
Previous positions
• Researcher at Lund University, August 2020 - August 2022 within the ERC project 3DWATERWAVES (Mathematical aspects of three-dimensional water waves with vorticity)Supervisor of the project: Prof. Erik Wahlén
- 2021: qualification for the “Maître de conférences” title, France, under section 26 - Mathématiques appliquées et applications des mathématiques
- October 2020-August 2022: co-organizer of the ``Seminar on Analysis, Geometry, and PDEs'' weekly seminar activity, Lund
- 2020: review of a grant proposal for the National Science Center, Poland
• High-school teaching, 27 January 2020 - 13 June 2020Mathematics and Physics teaching at the high-school "I.I.S. Einstein", Piove di Sacco (Padua, Italy)
• postdoc at BGSMath-UPC (Barcelona, Spain), December 2018 - December 2019Fellowship funded through the Maria de Maeztu Unit of Excellence Award and the Barcelona Graduate School of Mathematics.Supervisor: Prof. Marcel Guardia
• "Assegnista di ricerca" (postdoc) at the University of Roma Tre, October 2017 - September 2018 within the ERC project HamPDEs (Hamiltonian PDEs and small divisor problems: a dynamical systems approach)Supervisor of the project: Prof. Michela Procesi
Education
• PhD in Mathematical Sciences at the University of Milan, April 2017Title of the PhD thesis: Long time dynamics of the Klein-Gordon equation in the nonrelativistic limitAdvisor: Prof. Dario Bambusi• Graduated in Mathematics at the University of Padua, September 2013Title of the master thesis: Covariant Lyapunov Vectors for the FPU modelAdvisors: Prof. Giancarlo Benettin, Prof. Antonio Ponno
Publications and preprints
10. M. Groves, D. Nilsson, S. Pasquali and E. Wahlén, Analytical Study of a generalised Dirichlet-Neumann operator and application to three-dimensional water waves on Beltrami flows,
preprint on arXiv:2307.01702
9. S. Pasquali, Energy cascade for the Klein-Gordon lattice,
preprint on arXiv:2304.07146
8. F. Giuliani, M. Guardia, P. Martin and S. Pasquali, Chaotic resonant dynamics and exchanges of energy in Hamiltonian PDEs,
Rendiconti Lincei - Matematica e Applicazioni 32, 149-166, 2021
DOI 10.4171/RLM/931
equivalent preprint on arXiv:2011.12793
7. F. Giuliani, M. Guardia, P. Martin and S. Pasquali, Chaotic-like transfers of energy in Hamiltonian PDEs,
Communications in Mathematical Physics , 2021
https://doi.org/10.1007/s00220-021-03956-9
equivalent preprint on arXiv:2006.09309
6. M. Gallone and S. Pasquali, Metastability phenomena in two-dimensional rectangular lattices with nearest-neighbour interaction,
Nonlinearity, vol. 34, 4983, 2021
https://doi.org/10.1088/1361-6544/ac0483
equivalent preprint on arXiv:1911.12648
5. S. Pasquali, Dynamics of the nonlinear Klein-Gordon equation in the nonrelativistic limit,
Annali di Mat. Pura ed Applicata (1923 -), 198(3), 903-972, 2019
https://doi.org/10.1007/s10231-018-0805-1
preprint on arXiv:1703.01609 and arXiv:1712.03768
4. R. Feola, F. Giuliani and S. Pasquali, On the integrability of Degasperis-Procesi equation: control of the Sobolev norms and Birkhoff resonances,
Journal of Differential Equations, 266 (6), 3390-3437, 2019
https://doi.org/10.1016/j.jde.2018.09.003
equivalent preprint on arXiv:1802.00035
3. G. Benettin, S. Pasquali and A. Ponno, The Fermi-Pasta-Ulam problem and its underlying integrable dynamics: an approach through Lyapunov Exponents,
Journal of Statistical Physics, 171 (4), 521-542, 2018
https://doi.org/10.1007/s10955-018-2017-x
equivalent preprint on arXiv:1801.05199
2. S. Pasquali, A Nekhoroshev type theorem for the nonlinear Klein-Gordon equation with potential,
Discrete and Continuous Dynamical Systems Series B, 23 (9), 3573-3594, 2018
https://doi.org/10.3934/dcdsb.2017215
equivalent preprint on arXiv:1705.03105
S. Pasquali, Almost global existence for the nonlinear Klein-Gordon equation in the nonrelativistic limit,
Journal of Mathematical Physics, 59, 011502, 2018
https://doi.org/10.1063/1.4994969
equivalent preprint on arXiv:1703.01618
In preparation
T. Alazard, S. Pasquali and E. Wahlén, paper in preparation (keywords: 3D water waves, vorticity)
M. Groves, E. Lokharu, S. Pasquali and E. Wahlén, paper in preparation (keywords: gravity-capillary 3D water waves, vorticity, Beltrami flows)
M. Groves, D. Nilsson, S. Pasquali and E. Wahlén, paper in preparation (keywords: pure gravity 3D water waves, vorticity, Beltrami flows)
E. Haus and S. Pasquali, paper in preparation (keywords: 2D water waves, vorticity)
Collaborators
Thomas Alazard (ENS Paris-Saclay)
Emanuele Haus (Università degli Studi Roma Tre)
Evgeniy Lokharu (Lunds Universitet)
Mark Groves (Universität des Saarlandes)
Dag Nilsson (Lunds Universitet)
Erik Wahlén (Lunds Universitet)
Pau Martin (Universitat Politécnica de Catalunya)
Marcel Guardia (Universitat de Barcelona)
Matteo Gallone (SISSA)
Filippo Giuliani (Politecnico di Milano)
Roberto Feola (Università degli Studi Roma Tre)
Antonio Ponno (Università degli Studi di Padova)
Giancarlo Benettin (Università degli Studi di Padova)
Scientific Communications (in the last 5 years)
• 5th June 2024: Seminar, “Study of a generalized Dirichlet-Neumann operator for 3D water waves with general vorticity”, Oberseminar Angewandte Analysis, Department of Mathematics, Saarbrücken, Germany
• 21st May 2024: Seminar, “Study of a generalized Dirichlet-Neumann operator for 3D water waves with general vorticity”, PDE Seminars, Matematikcentrum, Lund, Sweden
• 8th February 2024: Seminar, “Asymmetrical 3D water waves on Beltrami flows”, Groupe de travail EDP, Laboratoire d’Analyse et de Mathématiques Appliquées, Université Gustave Eiffel, Créteil, France
• 21th September 2023: Seminar, “Asymmetrical 3D water waves on Beltrami flows”, Order and Randomness in Partial Differential Equations, Institut Mittag-Leffler, Sweden
• 27th June 2023: Seminar, “Instability phenomena in PDEs and applications”, MathInGP Postdoctoral Research Symposium, Campus Jussieu,
Paris, France
• 10th May 2023: Seminar, “An energy cascade phenomenon for a Klein-Gordon lattice”, Analysis Seminars, Department of Mathematics and Physics, Università degli Studi Roma Tre, Rome
• 13th Mar. 2023: Seminar, “Continuous approximation of multidimensional Hamiltonian lattices”, PDE Seminars, Matematikcentrum, Lund, Sweden
• 22nd Feb.2023: Seminar, “Continuous approximation of multidimensional Hamiltonian lattices”, Oberseminar Angewandte Analysis, Department of Mathematics, Saarbrücken, Germany
• 27th Oct. 2022: Seminar, “Asymmetrical 3D Gravity Waves on Beltrami Flows”, Laboratoire de Mathématiques d’Orsay, Université Paris-Saclay, Orsay, France
• 5th Jul. 2022: Poster session, “Asymmetrical 3D Gravity Waves on Beltrami Flows”, Conference "Global and Local Aspects in Dynamical Systems", Barcelona, Spain
• 28th Jun. 2022: Seminar, “Asymmetrical 3D Gravity Waves on Beltrami Flows”, Department of Mathematics, Saarbrücken, Germany
• 16th Mar. 2022: Invited talk, “Asymmetrical 3D Gravity Waves on Beltrami Flows”, Minisymposium Analysis of Water Waves, SIAM Conference on Analysis of Partial Differential Equations 2022, Berlin, Germany
• 15th Feb. 2022: Contributed talk, “Metastability in 2D rectangular lattices with nearest-neighbour interaction”, Mathematics of Wave Phenomena,
Karlsruhe Institute of Technology, Karlsruhe, Germany
• 19th Jan. 2022: Seminar, “Metastability in 2D rectangular lattices with nearest-neighbourinteraction”, Department of Mathematics, Technical Universität München, München, Germany
• 2nd Nov. 2021: Seminar, “Chaotic-like transfers of energy in Hamiltonian PDEs”, Department of Mathematics, Università degli Studi di Roma Tor
Vergata, Rome
• 30th Jul.2021: Contributed talk, “Chaotic-like transfers of energy in Hamiltonian PDEs”, Young Researchers Symposium (YRS), International
Congress of Mathematical Physics 2021(ICMP 2021), University of Geneva, Switzerland
• 17th Dec. 2020: Seminar, “Chaotic-like transfers of energy in Hamiltonian PDEs”, Online North East PDE and Analysis Seminar (ONEPAS), co-
organized by Carnegie Mellon University - Department of Mathematical Sciences, University of Toronto - Math Department and Brown University
- Department of Mathematics
• 22nd Sept. 2020: Seminar, “Transfer of energy in nonlinear Hamiltonian PDEs”, Seminar on Analysis, Geometry, and PDEs, Matematikcentrum, Lund, Sweden
• 4th Jul. 2019: Seminar, “Stability and instability phenomena in Hamiltonian lattices and in Hamiltonian PDEs”, Jornada de recerca del Departament de Matemátiques de la UPC, Barcelona, Spain
• 13th Feb.2019: Seminar, “Birkhoff Normal Form results for singular limits of nonlinear Hamiltonian PDEs”, Seminari De Sistemes Dinàmics UB-UPC, Barcelona, Spain