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Archivio digitale delle tesi discusse presso l’Università di Pisa

Tesi etd-11202017-105629


Tipo di tesi
Tesi di laurea magistrale
Autore
DINI, LORENZO
URN
etd-11202017-105629
Titolo
Properties of strong interactions in background fields: the Chiral Magnetic Effect
Dipartimento
FISICA
Corso di studi
FISICA
Relatori
relatore Prof. D'Elia, Massimo
Parole chiave
  • finite temperature
  • lattice QCD
  • magnetic field
  • Monte Carlo simulations
Data inizio appello
11/12/2017
Consultabilità
Completa
Riassunto
In a system composed by quasi-free fermions, initially chirally symmetric, it is possible to show that a strong magnetic field, in the presence of an imbalance of chirality, induces an electric dipole moment and then a current along the
magnetic fi eld. This is called the "Chiral Magnetic Effect" (CME).
The Quark Gluon Plasma (a phase of extremely hot matter consisting of quarks and gluons) is, indeed, a chirally symmetric phase, where chirality imbalance can be induced by the presence of gluonic con gurations with non trivial topology.
QGP can be created in heavy-ion collision, where the presence of a strong magnetic eld in non central collision can generate the CME.
In order to investigate the consequences of the CME in QGP, we will measure on the lattice the local correlations between the topological charge density and electric dipole moment of quarks, induced by a constant external magnetic fi eld.
We will initially measure the local correlation close to the chiral limit. Then we will investigate the dependence of this correlation on the magnetic fi eld and we will perform a simulation at higher temperature, extending the analysis done
until now in a fully deconfi ned phase of QCD.
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