Entries by Valentina Brosco

Nature Reviews: The physics of financial networks

ISC associates Guido Caldarelli  and Gulio Cimini coauthored an interesting review on modelling the financial systems and networks now published in Nature Reviews, M. Bardoscia, P. Barucca, S. Battiston, F. Caccioli, G. Cimini, D. Galaschelli, F. Saracco, T. Squartini, and G. Caldarelli. Nat. Rev. Phys. June (2021).

As the total value of the global financial market outgrew the value of the real economy, financial institutions created a global web of interactions that embodies systemic risks.… Read the rest

Nonlinear Optics Topical Meeting – Virtual OSA Meeting 9 – 13 August 2021

ISC Director Claudio Conti co-organizes an OSA Virtual meeting from 9th to 13th August 2021.

An international forum for discussion of all aspects of nonlinear optics, including new phenomena, novel devices, advanced materials and applications. Nonlinear optical phenomena play a key role in many applications of photonics. They are now studied and applied over a wide range of energies and powers, from single-photons to zettawatts and above, and over broad spectral ranges, from THz to Gamma-ray frequencies.… Read the rest

Science: Mapping out a future for ungulate migrations

ISC researcher Stefano Focardi coauthored an interesting work in Science,”Mapping out a future for ungulate migrations” Science 372, 567 (2021).

The article shows how limited mapping of mammalians migrations hampers conservation  and envisions a digital archive translating migration data into actionable migration maps that are standardized, in a central database, and publicly available.

 

Migration of ungulates (hooved mammals) is a fundamental ecological process that promotes abundant herds, whose effects cascade up and down terrestrial food webs.… Read the rest

Seminar by Paola Verrucchi, Monday April 19 at 3 pm

There is only one time

We draw a picture of physical systems that allows us to recognize what “time” is by requiring consistency with the way that time enters the fundamental laws of Physics. Elements of the picture are two non-interacting and yet entangled quantum systems, one of which acting as a clock. In this setting, employing the Page and Wootters mechanism with tools from large-N quantum approaches, we show that there is not a “quantum time”, possibly opposed to a “classical” one; there is only one time, and it is a manifestation of entanglement.… Read the rest

Nature Communications: Stochastic sampling effects favor manual over digital contact tracing

ISC researcher Claudio Castellano and collaborators unveil the roles of contact tracing procedures in mitigating COVID-19 pandemic, now published in Nature Communications, see M. Mancasroppa, C. Castellano, A. Vezzani and R. Burioni, Stochastic sampling effects favor manual over digital contact tracing, Nature Communications 12, 1919 (2021).

 

Abstract

Isolation of symptomatic individuals, tracing and testing of their nonsymptomatic contacts are fundamental strategies for mitigating the current COVID-19 pandemic.… Read the rest

Una scuola sull’intelligenza artificiale in fotonica

Creare “cervelli di luce” per macchine intelligenti più veloci, efficienti e “green” degli attuali computer che funzionano grazie ai chip con elettroni e semiconduttori.

L’idea, suggestiva sì, ma già molto concreta, tra scienza e mercato, viene discussa, in questi giorni al Corso “Machine Learning Photonics” organizzata dal  Prof. Claudio Conti e dal Prof. Stefan Wabnitz.

Maggiori informazioni in questo articolo divulgativo apparso sul quotidiano La Provincia di Como.… Read the rest

Time and classical equations of motion from quantum entanglement

ISC Researcher Paola Verrucchi and Collaborators wrote a beatiful and elegant work investigating the concept of time in quantum mechanics, now published in  Nature Communications, see C. Foti, A.Coppo, G. Barni, A. Cuccoli and P. Verrucchi, Time and classical equations of motion from quantum entanglement via the Page and Wootters mechanism with generalized coherent states, Nature Communications 12,  1787 (2021).

The figure shows the interaction between a  classical clock and a quantum system.… Read the rest

Machine Learning Photonics Lake Como School of Advanced Studies

The school brings together experts in emerging photonic technologies, machine learning techniques, and fundamental physics who will share with young researchers their knowledge and interdisciplinary approaches for understanding and designing complex photonic systems and their practical applications. In the new era of artificial intelligence, algorithms and computational interfaces are broadly emerging as novel tools to do scientific research. The paradigms of machine learning also inspire interpretations and methodologies, in both theories and experiments.… Read the rest

Photonics Research Special Issue now available online

ISC researcher Laura Pilozzi, co-edited the Photonics Research Special Issue Topological Photonics and beyond: novel concepts and recent avances, now available online

 

 

Topological photonics has been opening exciting opportunities in recent optics research. This Special Issue provides a snapshot and overview of the recent advances in this thriving field of research. It features six papers and one review article, by some of the leading experts in the field, covering various aspects of topological photonics research.… Read the rest

Advances in interacting complex systems

A joint online event organized by the Department of Physics of Bar-Ilan and the CNR-Istituto dei Sistemi Complessi (ISC-CNR) as a part of project EXPLICS “Towards a physical realization of explosive phenomena in interacting complex systems”, granted by the Italian Ministry of Foreign Affairs and International Cooperation (MAECI).

See the Conference Website for more information.

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Wolf prize in Physics 2021 to Giorgio Parisi

 

Theoretical physicist Giorgio Parisi, professor at the Physics Department of the University of Rome , “La Sapienza”  and  president of  Accademia Nazionale dei Lincei, has been awarded the prestigious Wolf Prize for Physics 2021 “for his pioneering discoveries in quantum field theory, statistical mechanics and complex systems”.… Read the rest

Face masks and nanotechnology

ISC researcher V. Palmieri coauthored a recent article  on NanoToday explaining the role of nanotechnologies in improving the performance of facial masks and  warning on possible future consequences caused by a poorly regulated use of nanotechnology in textiles.

Coronavirus Disease 2019 (COVID-19) is one of the biggest challenges of the 21st century. While researchers are working on vaccine development and elucidating the mechanism of action and evolution of the harmful SARS-CoV-2, the current most important public health measure, second only to social distancing, is the obligatory wearing of facial protection.… Read the rest

Replica Symmetry Breaking Maps in Random Laser, ACS Photonics (2021)

ISC Researchers build for the first time replica symmetry breaking  maps to visualize Random Laser activity on ACS Photonics 2021

In the past decade, complex networks of light emitters are proposed as novel platforms for photonic circuits and lab-on-chip active devices. Lasing networks made by connected multiple gain components and graphs of nanoscale random lasers (RLs) obtained from complex meshes of polymeric nanofibers are successful prototypes.… Read the rest

Can graphene take part in the fight against COVID-19? Nano Today (2020)

ISC researcher, Valentina Palmieri, and her collaborator M. Papi discuss the promising applications of functionalized graphene in the fight against COVID 19. Their research has been published in Nano Today, “Can graphene take part in the fight against COVID-19?

Nano Today

M. Papi and V. Palmieri, Nano Today, Vol. 33,  100883 (2020)

Abstract

The pneumonia outbreak of coronavirus disease 2019 (COVID-19) represents a global issue.

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Analytical Model for Particle Capture in Nanopores, ACS Nano (2020)

Our researcher, Fabio Cecconi, has developed an analytical model elucidating the competition among electrophoresis, electroosmosis, and dielectrophoresis. The work is published on ACS Nano, M. Chinappi, Misa Yamaji, Ryuji Kawano, and Fabio Cecconi, “Analytical Model for Particle Capture in Nanopores Elucidates Competition among Electrophoresis, Electroosmosis, and Dielectrophoresis” ACS Nano, 14, 15816 (2020).

 

Abstract

The interaction between nanoparticles dispersed in a fluid and nanopores is governed by the interplay of hydrodynamical, electrical, and chemical effects.… Read the rest

Roberta Angelini is guest Editor of Polymers

Our staff researcher Roberta Angelini is Guest Editor of a Special Issue  of Polymers on “Polymer Microgels: Synthesis and Application

Polymer microgels have attracted great attention in fundamental studies as good model systems for understanding the intriguing behaviors of soft colloids thanks to their elastic and deformable particles that provide a very rich phenomenology. These cross-linked particles with nanometric to micrometric dimensions are characterized by many fascinating properties such as swelling, softness, and responsivity that depend on their macromolecular architecture and can be triggered during the synthesis process.… Read the rest

Dispersionless pulse transport in harmonic chains

Ruggero Vaia has published a new article on Physical Review E “Dispersionless pulse transport in mass-spring chains: All possible perfect Newton’s cradles“,  R. Vaia, Phys. Rev. E 102, 023005 (2020).

Coherent pulse transmission along an arbitrarily long mass-spring chain is a prototype for several material systems: atom/ion chains, polymer molecules, in 1D, but also 2D and 3D systems with symmetry, such as multilayers.… Read the rest