Graduate School in Physics and Astrophysics
-------------------------------------------
ANNUAL REPORT
-------------------------------------------
Fill with a text editor (without TAB or formatting)
Repeat fields for each course as necessary.
-------------------------------------------
name: Alessandro Nada
email: alex.nada@alice.it
ciclo: XXX
year completed (1,2 or 3): 2
supervisor: Marco Billo'
-------------------------------------------
GRADUATE SCHOOL COURSES
(only completed courses, with examination passed in the year)
code: T02
title: Non-perturbative solutions: solitons, monopoles, instantons
teacher: Marco Billo'
hours: 20 (5 CFU)
-------------------------------------------
UNDERGRADUATE COURSES (Laurea Magistrale)
(only completed courses, with examination passed in the year)
title: Introduzione alla teoria della stringa
teacher: Carlo Angelantonj
hours: 48 (6 CFU)
-------------------------------------------
TEACHING HOURS
course: tutoraggio Elettricita' e Magnetismo
year: 2015-2016
teacher: Chiavassa/Ferretti
hours: 14
(second part of tutoring lessons, held in November 2015; the first part, held in October 2015, was inserted in the first year report)
course: tutoraggio Elettricita' e Magnetismo
year: 2016-2017
teacher: Menichetti/Ferretti
hours: 8
(first part of tutoring lessons, held in October 2016)
-------------------------------------------
SUMMER SCHOOLS, INTERNATIONAL SCHOOLS
(only those attended in the current year)
title: QCD Masterclass
place: Saint-Jacut de la Mer, France
webpage: https://indico.cern.ch/event/385761/
days: 5 - 18 June 2015
talk or poster (Y/N): Y (talk)
-------------------------------------------
CONFERENCES, WORKSHOP
(only those attended in the current year)
title: SM&FT 2015 - The XVI Workshop on Statistical Mechanics and nonpertubative Field Theory
place: Universita' di Bari
webpage: https://agenda.infn.it/conferenceDisplay.py?confId=9646
days: 9 - 11 December 2015
talk or poster (Y/N): Y (talk)
title: New Frontiers in Theoretical Physics - XXXV Convegno Nazionale di Fisica Teorica and GGI 10th anniversary
place: Galileo Galilei Institute, Firenze
webpage: https://agenda.infn.it/conferenceDisplay.py?confId=10115
days: 17 - 20 May 2016
talk or poster (Y/N): Y (talk)
title: 34th International Symposium on Lattice Field Theory
place: Southampton, United Kingdom
webpage: http://www.southampton.ac.uk/lattice2016/
days: 24 - 30 July 2016
talk or poster (Y/N): Y (talk)
---------------------------------------------------
Research activity
(max characters 2500)
My reasearch activity is carried out in the framework of lattice gauge theories, with a particular focus on the equation of state of confining gauge theories. During my last year as a PhD student I studied a possible extension of a well-known result in non-equilibrium statistical mechanics (called Jarzynski's relation) to lattice gauge theories. This relation allows the calculation of free-energy differences using the exponential average of the work performed on the system during non-equilibrium transformations. This result is well suited for Monte Carlo simulations and thus it can be readily implemented to lattice gauge theories to compute a large set of physically interesting observables.
The first study in a lattice gauge theory in which Jarzynski's relation has been tested is for the computation of the free energy of an interface in the Z_2 lattice gauge theory where this novel method proved to viable and cost-effective with respect to standard algorithms. The second study was focused on the determination of the equation of state of the SU(2) Yang-Mills theory: in particular the pressure is related to the free-energy density and it has been directly computed very efficiently through Jarzynski's relation using non-equilibrium Monte Carlo simulations on the lattice.
Since this method does not require strong assumptions on the properties of the system, it is open to a large set of applications in lattice gauge theories and in particular in lattice QCD: current lines of research include the determination of the coupling constant g^2 using the Schrodinger Functional scheme, the computation of the susceptibility of the strong interacting matter and also the pressure (and other thermodynamic quantities) of QCD with dynamical fermions.
---------------------------------------------------
Publications in the current year
[1] M.Caselle, G.Costagliola, A.Nada, M.Panero and A.Toniato
"Jarzynski's theorem for lattice gauge theory"
Phys.Rev. D94 (2016) no.3, 034503
arXiv:1604.05544 [hep-lat]
[2] M.Caselle, G.Costagliola, A.Nada, M.Panero and A.Toniato
"Applications of Jarzynski's relation in lattice gauge theories"
Contribution to the 34th International Symposium on Lattice Field Theory "Lattice 2016" (Southampton, United Kingdom - 24-30 July 2016)
PoS(LATTICE2016) 262
arXiv:1610.09017 [hep-lat]
BE AWARE: research activity and Pubs are not evaluated as didactic credits,
but are requested to trace the PhD students' career