Zobrazeno 1 - 10
of 1 867
pro vyhledávání: '"Baranzini, A."'
We seek periodic trajectories of a system of multiple mutually repelling electrons on a half-line, with an attractive nucleus sitting at the origin. We adopt a variational viewpoint and study critical points of the associated Lagrange-action function
Externí odkaz:
http://arxiv.org/abs/2410.17848
Autor:
Luca, Asselle, Stefano, Baranzini
A celebrated result of Bertrand states that the only central force potentials on the plane with the property that all bounded orbits are periodic are the Kepler potential and the potential of the harmonic oscillator. In this paper, we complement Bert
Externí odkaz:
http://arxiv.org/abs/2408.14191
Through the use of sub-Riemannian metrics we provide quantitative estimates for the maximal tight neighbourhood of a Reeb orbit on a three-dimensional contact manifold. Under appropriate geometric conditions we show how to construct closed curves whi
Externí odkaz:
http://arxiv.org/abs/2407.00770
We seek frozen planet orbits for the helium atom through an application of the Mountain Pass Lemma to the Lagrangian action functional. Our method applies to a wide class of gravitational-like interaction potentials thus generalising the results in [
Externí odkaz:
http://arxiv.org/abs/2404.00307
Autor:
Soman, Karthik, Rose, Peter W, Morris, John H, Akbas, Rabia E, Smith, Brett, Peetoom, Braian, Villouta-Reyes, Catalina, Cerono, Gabriel, Shi, Yongmei, Rizk-Jackson, Angela, Israni, Sharat, Nelson, Charlotte A, Huang, Sui, Baranzini, Sergio E
Large Language Models (LLMs) are being adopted at an unprecedented rate, yet still face challenges in knowledge-intensive domains like biomedicine. Solutions such as pre-training and domain-specific fine-tuning add substantial computational overhead,
Externí odkaz:
http://arxiv.org/abs/2311.17330
We study a class of singular dynamical systems which generalise the classical N-centre problem of Celestial Mechanics to the case in which the configuration space is a Riemannian surface. We investigate the existence of topological conjugation with t
Externí odkaz:
http://arxiv.org/abs/2307.09098
The classical theory of attractive central force problem on the standard (flat) Euclidean plane can be generalized to surfaces by reformulating the basic underlying physical principles by means of differential geometry. Attractive central force probl
Externí odkaz:
http://arxiv.org/abs/2305.18134
Autor:
Keith Siew, Kevin A. Nestler, Charlotte Nelson, Viola D’Ambrosio, Chutong Zhong, Zhongwang Li, Alessandra Grillo, Elizabeth R. Wan, Vaksha Patel, Eliah Overbey, JangKeun Kim, Sanghee Yun, Michael B. Vaughan, Chris Cheshire, Laura Cubitt, Jessica Broni-Tabi, Maneera Yousef Al-Jaber, Valery Boyko, Cem Meydan, Peter Barker, Shehbeel Arif, Fatemeh Afsari, Noah Allen, Mohammed Al-Maadheed, Selin Altinok, Nourdine Bah, Samuel Border, Amanda L. Brown, Keith Burling, Margareth Cheng-Campbell, Lorianna M. Colón, Lovorka Degoricija, Nichola Figg, Rebecca Finch, Jonathan Foox, Pouya Faridi, Alison French, Samrawit Gebre, Peter Gordon, Nadia Houerbi, Hossein Valipour Kahrood, Frederico C. Kiffer, Aleksandra S. Klosinska, Angela Kubik, Han-Chung Lee, Yinghui Li, Nicholas Lucarelli, Anthony L. Marullo, Irina Matei, Colleen M. McCann, Sayat Mimar, Ahmed Naglah, Jérôme Nicod, Kevin M. O’Shaughnessy, Lorraine Christine De Oliveira, Leah Oswalt, Laura Ioana Patras, San-huei Lai Polo, María Rodríguez-Lopez, Candice Roufosse, Omid Sadeghi-Alavijeh, Rebekah Sanchez-Hodge, Anindya S. Paul, Ralf Bernd Schittenhelm, Annalise Schweickart, Ryan T. Scott, Terry Chin Choy Lim Kam Sian, Willian A. da Silveira, Hubert Slawinski, Daniel Snell, Julio Sosa, Amanda M. Saravia-Butler, Marshall Tabetah, Erwin Tanuwidjaya, Simon Walker-Samuel, Xiaoping Yang, Yasmin, Haijian Zhang, Jasminka Godovac-Zimmermann, Pinaki Sarder, Lauren M. Sanders, Sylvain V. Costes, Robert A. A. Campbell, Fathi Karouia, Vidya Mohamed-Alis, Samuel Rodriques, Steven Lynham, Joel Ricky Steele, Sergio Baranzini, Hossein Fazelinia, Zhongquan Dai, Akira Uruno, Dai Shiba, Masayuki Yamamoto, Eduardo A.C.Almeida, Elizabeth Blaber, Jonathan C. Schisler, Amelia J. Eisch, Masafumi Muratani, Sara R. Zwart, Scott M. Smith, Jonathan M. Galazka, Christopher E. Mason, Afshin Beheshti, Stephen B. Walsh
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-20 (2024)
Abstract Missions into Deep Space are planned this decade. Yet the health consequences of exposure to microgravity and galactic cosmic radiation (GCR) over years-long missions on indispensable visceral organs such as the kidney are largely unexplored
Externí odkaz:
https://doaj.org/article/314b862fbe6c4c54a23cb008317e48c9
Autor:
Baranzini, Stefano
We study the determinant of the second variation of an optimal control problem for general boundary conditions. Generically, this operators are not trace class and the determinant is defined as a principal value limit. We provide a formula to compute
Externí odkaz:
http://arxiv.org/abs/2212.13455
Autor:
Baranzini, Stefano, Beschastnyi, Ivan
We describe the relation between block Jacobi matrices and minimization problems for discrete time optimal control problems. Using techniques developed for the continuous case, we provide new algorithms to compute spectral invariants of block Jacobi
Externí odkaz:
http://arxiv.org/abs/2212.07642