Our colleagues Amadeu Delshams and Pau Roldan, together with Marian Gidea have published a new preprint entitled "Semi-analytic construction of global transfers between quasi-periodic orbits in the spatial R3BP". You can find it at https://arxiv.org/pdf/2501.02485
#DynamicalSystems #AppliedMath #Interdisciplinarity #mathgoesCelestial
Generic global diffusion for analytic uncoupled a priori unstable systems by
Amadeu Delshams, Ke Zhang.
Our colleagues @toniguillamong and Gemma Huget are organizing the International Conference on Mathematical Neuroscience from June 17th to June 20th in Barcelona.
The International Conference on Mathematical Neuroscience (ICMNS) is an interdisciplinary conference series, bringing together theoretical/computational neuroscientists and mathematicians. The conferences are aimed at scientists interested in using or developing mathematical techniques for neuroscience problems. ICMNS 2025 will be the tenth annual conference. ICMNS 2024 was held in Dublin, whereas previous editions were held in Copenhagen, Juan les Pins and Boulder, Colorado.
More info at: https://www.crm.cat/international-conference-on-mathematical-neuroscience-icmns25/
#DynamicalSystems #neuroscience #mahtgoesNeuro #Interdisciplinarity #appliedMath
Our colleague Jezabel Curbelo is organizing the 4th NonLinear processes in Oceanic and Atmospheric flows at the Institut de Ciencies del Mar (Barcelona, Spain) from January 22nd to January 24th:
NLOA 2025 intends to create cross-disciplinary interaction among mathematicians, physicists, oceanographers and atmospheric scientists in a wide sense. It will focus on nonlinear dynamics of atmospheric and oceanic phenomena, and it aims to create an international forum where international researchers explore timely open problems in ocean and atmosphere sciences, and also investigate the power and impact of mathematics in these areas.
Registration Deadline till January 8th.
More info: https://www.crm.cat/4th-nonlinear-processes-in-oceanic-and-atmospheric-flows/
#appliedMath #DynamicalSystems #Interdisciplinarity #MathEverywhere
From April 27th to May 2nd we will be present at #EGU25 in the session organized by Jezabel Curbelo about Lagrangian perspectives on transport and mixing in geophysical fluids:
We invite presentations on topics including – but not limited to – the following:
- Large-scale circulation studies using direct Lagrangian modeling and/or age and chemical tracers (jets, gyres, overturning circulations);
- Exchanges between reservoirs and mixing studies (e.g. transport barriers and Lagrangian Coherent Structures in the stratosphere and in the ocean, stratosphere-troposphere exchange);
- Tracking long-range anthropogenic and natural influence (e.g. effects of recent volcanic eruptions and wildfire smoke plumes on the composition, chemistry, and dynamics of the atmosphere, transport of pollutants, dusts, aerosols, plastics, and fluid parcels in general, etc);
- Inverse modeling techniques for the assessment and constraint of emission sources (e.g. backtracking, including diffusion and buoyancy);
- Model and tool development, computational advances.
Find us at https://meetingorganizer.copernicus.org/EGU25/session/52516
#dynamicalSystems #AppliedMath #mathInGeosciences #Interdisciplinary
The 2024. #Barcelona #DynamicalSystems #Prize has been awarded to Massimiliano Berti, Alberto Maspero i Paolo Ventura, authors of the article “Full description of Benjamin-Feir instability of Stokes waves in deep water“, Invent. Math.
230 (2022), no. 2, 651–711. Read the full announcement from @SCM https://scm.iec.cat/eng/massimiliano-berti-alberto-maspero-i-paolo-ventura-barcelona-dynamical-systems-prize/
A dynamical study of Hilda asteroids in the Circular and Elliptic RTBP
Àngel Jorba, Begoña Nicolás, Óscar Rodríguez https://arxiv.org/html/2412.07700v1
Breakdown of homoclinic orbits to L3: Nonvanishing of the Stokes constant. Inmaculada Baldomá, Maciej J. Capinski, Mar Giralt, Marcel Guardia https://arxiv.org/abs/2312.13138
21st School on Interactions between #DynamicalSystems and #PartialDifferentialEquations
📅 June 30 - July 04, 2025
📍Centre de Recerca Matemàtica (Barcelona)
Registration is open.
⚠️ Registration deadline is June 12, 2025.
The registration fee (200€/75€ for granted) includes coffee breaks and lunch.
⚠️ Application deadline for grants and posters is April 13th, 2025.
The School on Interactions between Dynamical Systems and Partial Differential Equations (JISD) is an annual international summer school consisting of four short courses of around five hours given by four world-leading experts.
LECTURERS
Dmitry Dolgopyat | University of Maryland
Serena Dipierro | University of Western Australia
Luciano Mari | Università di Torino
Sylvain Crovisier | Université Paris-Saclay
Mar Giralt (DMA) i Feliu Serra (DEIO), premis extraordinaris del Programa de Doctorat de la UPC 2024 https://fme.upc.edu/resolveuid/9c1fdaf1c95c40a7bdb428d9cedb8fb1
Breakdown of homoclinic orbits to L1 of the hydrogen atom in a circularly polarized microwave field.
Amadeu Delshams, Mercè Ollé, Juan Ramon Pacha, Óscar Rodríguez https://arxiv.org/abs/2411.10407
Alvarez-Ramírez, M.; Lino, J.; Cors, J. Convex symmetric rectangular pentagon central configurations. "Communications in nonlinear science and numerical simulation", 1 Novembre 2024, vol. 138, núm. 108250.
Seminari de Sistemes Dinàmics UB-UPC
======================
Dia: Dimecres, 13 de novembre de 2024
Lloc: Aula T2 (segon pis), Facultat de Matemàtiques i Informàtica, UB.
Hora: 16h00m
A càrrec de: José Lamas (UPC)
Títol: Final motions and ejection-collision orbits in the 3 Body
Resum: We consider the Planar Circular Restricted 3 Body Problem (PCRTBP), which describes the motion of a massless body under the attraction of other two bodies, the primaries, which describe circular orbits around their common center of mass located at the origin. In rotating coordinates, this system is Hamiltonian with two degrees of freedom. The orbits of this system are either defined for all (future or past) time or eventually go to collision with one of the primaries. For orbits defined for all time, Chazy provided a classification of all possible asymptotic behaviors, usually called final motions.
By considering a sufficiently small mass ratio between the primaries, we analyze the interplay between collision orbits and various final motions and construct several types of dynamics.
In particular, we show that orbits corresponding to any combination of past and future final motions can be created to pass arbitrarily close to the massive primary. Furthermore, we construct arbitrarily large ejection-collision orbits (orbits which experience collision in both past and future times) and periodic orbits that are arbitrarily large and get arbitrarily close to the massive primary. Additionally, we also establish oscillatory motions in both position and velocity, meaning that as time tends to infinity, the superior limit of the position or velocity is infinity while the inferior limit remains a real number.
If you have a Bluesky account you can also follow us through this network: https://bsky.app/profile/dynsysbcn.mathstodon.xyz.ap.brid.gy