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Dipartimento di Fisica

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Seminari Pubblici

Finite Temperature Phase Transition in Interacting Boson System
Speaker Speaker: dr. Dmitry Anchishkin
Affiliato Affiliato: Bogolyubov Institute for Theoretical Physics (Kiev)
Data Evento Mercoledì 26 Giugno, alle ore 15.00 - Aula seminari
Email Per informazioni scrivere a: papa@cs.infn.it
Thermodynamical properties of an interacting boson system at finite temperatures and zero chemical potential are studied within the framework of
the Skyrme-like and phi4-phi6 mean-field toy models. It is assumed that the mean field contains both attractive and repulsive terms.... continua
Plasmonic Bio-Assemblies and Nanostructures: Chirality, Coherent Transfer of Plasmons and Generation of Hot Electrons
Speaker Speaker: Prof. Alexander O. Govorov
Affiliato Affiliato: Department of Physics and Astronomy, Ohio University, Athens, USA;
Data Evento Mercoledì 12 Giugno, alle ore 16.00 - Aula Seminari Cubo 31C
Plasmonic nanostructures and metamaterials are very efficient at absorption and scattering of light. The studies to be presented in this talk concern special designs of hybrid nanostructures with electromagnetic hot spots, where the electromagnetic field becomes strongly enhanced and spatially... continua
Lindblad dissipative dynamics in presence of phase coexistence
Speaker Speaker: Andrea Nava
Affiliato Affiliato: SISSA - Trieste
Data Evento Mercoledì 29 Maggio, alle ore 18.30 - Sala riunioni, Piano V, Cubo 31 C
Email Per informazioni scrivere a: domenico.giuliano@fis.unical.it
We investigate the dissipative dynamics yielded by the Lindblad equation within the coexistence
region around a first order phase transition. In particular, we consider an exactly-solvable fully connected​
quantum Ising model with n-spin exchange (n > 2) - the prototype of quantum... continua
All'ombra del buco nero M87
Speaker Speaker: Prof. Mariafelicia De Laurentis
Affiliato Affiliato: Università di Napoli "Federico II"
Data Evento Martedì 28 Maggio, alle ore 17.00 - Aula Seminari Dipartimento di Fisica, Cubo 31 C, IV Piano
Email Per informazioni scrivere a: domenico.giuliano@fis.unical.it
La professoressa De Laurentis presenterà alcuni risultati sull'immagine di un buco nero recentemente ottenuti nell'ambito della collaborazione "Event Horizon Telescope". Il seminario sarà tenuto ad un livello accessibile a studenti del corso di laurea triennale in fisica e, in generale, non... continua
Lo sbarco sulla Luna 50 anni dopo
Speaker Speaker: Prof. Gaetano Zimbardo
Affiliato Affiliato: Dipartimento di Fisica, UniCal
Data Evento Giovedì 16 Maggio, alle ore 16.00 - Sala Multimediale Biblioteca di Area Tecnico-Scientifica
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Lenses with a twist
Speaker Speaker: Prof. Morten Andreas Geday
Affiliato Affiliato: Universidad Politécnica de Madrid
Data Evento Mercoledì 15 Maggio, alle ore 16.00 - Aula Seminari, Cubo 31C
In this presentation I will present a novel way of generating adaptive lenses based on liquid crystal (LC) technology. The talk will start by introducing light, lenses and wavefronts, with the aim of making the talk accessible for most undergraduate science students and will then lead on to review... continua
Nanostructured graphene catalyzes the reaction between two organic molecules
Speaker Speaker: Dott. Michele Pisarra
Affiliato Affiliato: Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA Nano), and Departamento de Química, Universidad Autónoma de Madrid, Campus de Cantoblanco, 24049, Madrid, Spain
Data Evento Giovedì 16 Maggio, alle ore 16.30 - Aula Seminari, Cubo 31C
The graphene-substrate interaction can be a powerful tool to tune the electronic properties of graphene [1]. A paradigmatic example is the graphene/Ru(0001) interface. The lattice mismatch between the two systems gives rise to a strong corrugation in graphene, dramatic variations of the... continua
Correlative microscopy techniques to study light-induced damage on amyloid fibers
Speaker Speaker: Caterina Maria Tone
Affiliato Affiliato: Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA Nano), Madrid, Spain
Data Evento Giovedì 16 Maggio, alle ore 15.30 - Aula Seminari, Cubo 31C
In recent years amyloid fibrils have been progressively gaining an important role in nanotechnology and biomaterial applications as a consequence of their unique physical and mechanical properties. However, these β-sheet rich protein aggregates are also strongly associated with various... continua
From the LHC to the Cosmos: recent anti-matter measurements with impact for astrophysics
Speaker Speaker: Dr Bellini Francesca (CERN)
Affiliato Affiliato: CERN
Data Evento Giovedì 02 Maggio, alle ore 15:30 - Aula Seminari - Dipartimento di Fisica
Abstract. The Large Hadron Collider can be used as “anti-matter factory”: in proton-proton, proton-nucleus
and nucleus-nucleus collisions at the TeV collision energy scale, light nuclei and their antimatter
counterparts are produced in equal amounts for a given species. In addition to providing... continua
A non-equilibrium Green's function approach to energy transfer in many-body quantum systems
Speaker Speaker: Dott. Nicola Lo Gullo
Affiliato Affiliato: University of Turku
Data Evento Giovedì 04 Aprile, alle ore 15.30 - Aula Seminari, Cubo 31C
The non-equilibrium Green's function (NEGF) formalism is a powerful microscopic theory which allows to account for many-body interactions and coupling to external reservoirs on the same footing and in a consistent way. A major drawback of this approach is that the equation of motion in real time... continua
Exploring the solar atmosphere with the WISPR instrument of the Parker Solar Probe mission
Speaker Speaker: Dott. Giuseppe Nisticò
Affiliato Affiliato: Institut für Astrophysik, Georg-August-Universität, Göttingen, 37077, Germania
Data Evento Mercoledì 17 Aprile, alle ore 15.30 - Aula CF2, Cubo 32C
The Wide-field Imager for Parker Solar Probe (WISPR) provides unprecedented white-light images of the solar corona and inner heliosphere from unconventional viewpoints thanks to the close perihelion transits of Parker Solar Probe. WISPR images coronal structures at high spatial and time... continua
STAR, come nasce un'infrastruttura di ricerca
Speaker Speaker: Prof. Riccardo Barberi
Affiliato Affiliato: Dipartimento di Fisica, UniCal
Data Evento Mercoledì 27 Marzo, alle ore 17.00 - Aula Seminari, Cubo 31C
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Competition between memory-keeping and memory-erasing decoherence channels
Speaker Speaker: Prof. Tony J. G. Apollaro
Affiliato Affiliato: Department of Physics - University of Malta
Data Evento Martedì 12 Marzo, alle ore 15.30 - Aula seminari Dipartimento di Fisica, Cubo 31 C
Email Per informazioni scrivere a: domenico.giuliano@fis.unical.it
In this seminar I will describe the competing effects of simultaneous Markovian and non-Markovian decoherence mechanisms acting on a single spin. There exists a threshold in the relative strength of such mechanisms above which the spin dynamics becomes fully Markovian, as revealed by the use of... continua
Remarks on Symmetry Breaking in Curved Space
Speaker Speaker: Antonino Flachi
Affiliato Affiliato: Department of Physics and Research and Education Center for Natural Sciences, Keio University, Yokohama, Japan
Data Evento Martedì 26 Febbraio, alle ore 12.00 - Aula Seminari, Cubo 31C
Email Per informazioni scrivere a: alessandro.papa@fis.unical.it
In this talk I will report an analysis of an interacting quantum field theory on a curved two-dimensional manifold constructed by geometrically deforming a flat hexagonal lattice by the insertion of a defect and taking subsequently the continuum limit. Depending on how the deformation is done, the... continua
QCD shockwave approach
Speaker Speaker: dr. Dmitry Ivanov
Affiliato Affiliato: Sobolev Institute of Mathematics, Novosibirsk
Data Evento Mercoledì 16 Gennaio, alle ore 15.30 - Aula seminari
Email Per informazioni scrivere a: papa@cs.infn.it
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Indice di Rifrazione Negativo: Toymodel e Realizzazione in Pozzi Quantici Zno/ZnMgO
Speaker Speaker: Dott. Mario Ferraro
Affiliato Affiliato: CRHEA - CNRS, Université Nice Sophia Antipolis (Francia)
Data Evento Giovedì 10 Gennaio, alle ore 15.30 - Aula seminari Cubo 31C
L’indice di rifrazione di un materiale è una grandezza fisica che ne identifica le proprietà ottiche. Nei materiali presenti in natura questo ha un valore positivo. Negli ultimi anni tuttavia si è sviluppato un ramo dell’ottica che mira a realizzare materiali che abbiano un indice di rifrazione... continua
Isotopi di radio: arma contro tumori metastatici
Speaker Speaker: Dott.ssa Elisa Napoli
Data Evento Giovedì 20 Dicembre 2018, alle ore 16.30 - Aula Seminari - Dipartimento di Fisica
ABSTRACT:
Alpha emitting radionuclides, due to their short penetration depth, are capable of destroying tumors while causing very limited damage to surrounding healthy tissue. In fact, an emitted alpha particle will not travel further than 6 cell diameters ( i.e., 50 µm to 100 µm). Moreover,... continua
Quantum Phases and Driven Dissipation
Speaker Speaker: dr. Andrea Nava
Affiliato Affiliato: Scuola Superiore di Studi Avanzati (SISSA) - Trieste
Data Evento Mercoledì 19 Dicembre 2018, alle ore 17.30 - Sala riunioni, cubo 31C, V piano
Email Per informazioni scrivere a: domenico.giuliano@fis.unical.it
The Mpemba effect is a counter-intuitive relaxation phenomenon, in which a system prepared at a hot temperature cools faster than an identical system starting at a cold temperature when both are quenched to an even colder bath. Such nonmonotonic relaxations were observed in various systems,... continua
A motivated model of inflation
Speaker Speaker: dr. Andrea Caputo
Affiliato Affiliato: Instituto de Fisica Corpuscular (IFIC), Universidad de Valencia and CSIC
Data Evento Giovedì 20 Dicembre 2018, alle ore 10.30 - Sala riunioni, cubo 31C, V piano
Email Per informazioni scrivere a: domenico.giuliano@fis.unical.it
I will first introduce the physics of inflation, then I will explain a particular model in which the inflaton is the radial field of a U(1) Peccei-Quinn symmetry, the “saxion”. We constraint the corrections to the Higgs mass to be small, in order to have model which is “natural”, and we explore the... continua
Looking for axion dark matter decay with radio-telescopes
Speaker Speaker: dr. Andrea Caputo
Affiliato Affiliato: Instituto de Fisica Corpuscular (IFIC), Universidad de Valencia and CSIC
Data Evento Martedì 18 Dicembre 2018, alle ore 17.30 - Sala riunioni, cubo 31C, V piano
Email Per informazioni scrivere a: domenico.giuliano@fis.unical.it
One of the most fascinating problems of physics nowadays is to find out what dark matter is. In this seminar I will introduce the dark matter problem and then talk about one of the most motivated candidate: the axion. Most of the experiments which aim to detect this particle are based on its... continua