Alberto Bressan, Penn State University
Modeling Traffic Flow
Giovedì 12 Giugno 2025, ore 15:30
aula U5-3014 del Dip. di Matematica e Applicazioni, Università Bicocca | |
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Maciej Zworski, University of California
Why is our world classical despite being governed by quantum mechanics?
Lunedì 09 Giugno 2025, ore 16:00 precise
Aula Seminari MOX VI piano - Dipartimento di Matematica - Ed. La Nave - Politecnico di Milano, via Bonardi 9 |
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Abstract
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This question has been much discussed in physics and one suggestion is that the
long time persistence of classical/quantum correspondence is due to interaction of a
small, observed system with a larger environment. Lindblad or GKSL evolution is one of the
standard models for describing such interactions. In that context the question of the
length of time of classical/quantum agreement was recently revisited in physics by
Hernández-Ranard-Riedel.
In my talk I will introduce the concept of Lindblad evolution and present results showing
that the evolution of a quantum observable remains close to the classical Fokker-Planck
evolution in the Hilbert-Schmidt norm for times vastly exceeding the Ehrenfest time (the
limit of such an agreement when there is no interaction with a larger system). The time
scale is the same as in two recent papers by Hernández-Ranard-Riedel but the statement
andmethods are different. The talk is based on joint work with J Galkowski and numerical
results obtained jointly with Z Huang. I will also comment on recent progress on trace
class estimates by Z Li and on the hypoelliptic case by H Smith. |
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Cristina Trombetti, Università degli Studi di Napoli Federico II
Some free boundary problems in thermal insulation
Venerdì 23 Maggio 2025, ore 11:30 precise
Aula B.5.4, quinto piano, ed. 14 "La Nave", Politecnico di Milano | |
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Armen Shirikyan, University of Cergy-Pontoise
Gallavotti–Cohen fluctuation theorem: Universal law of non-equilibrium statistical mechanics.
Mercoledì 26 Febbraio 2025, ore 16:00 precise
Aula seminari MOX, sesto piano del Dipartimento di Matematica, Edificio 14 "La Nave", Politecnico di Milano | |
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Camillo de Lellis, IAS Princeton
Area-minimimizing currents mod an integer
Martedì 25 Febbraio 2025, ore 14:30 precise
Aula C04, via Mangiagalli 25 | |
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Andrea Mondino, University of Oxford
Smooth and non-smooth aspects of Ricci curvature lower bounds
Mercoledì 02 Ottobre 2024, ore 16:00 precise
Sala del Consiglio (piano 7) | |
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