Description
A nice and passionate journey in low-dimensional systems:
An afternoon in honour of Francesco Ravanini
In a highly colloquial manner, I shall make few comments on two fundamental birthdays for theoretical physics.
In this talk I will share a few memories of nearly 25 years knowing Francesco, look at his (many!) contributions to the study of integrable quantum field theory, discuss some of our common work, and tell you a few things that you might not know about him. In the second part (time permitting) I will speak about some new work with Stefano Negro which follows from the talk of my student Fabio...
We first Review Chang’s derivation of a strong/weak duality in the paradigmatic $\phi^{4}$ quantum field theory in (1+1)-dimension. We show how it is possibile to extend this concepts for general Ginzburg-Landau Theories and study in detail the $\phi^{6}$ theory, proving the existence of a strong/weak duality. Such a duality links the strong coupling regime of the \mathbb{Z}_2 symmetric phase...
The sine-Gordon model is a paradigmatic quantum field theory due to its fascinating nonperturbative physics and integrability. Recently, it has gained direct experimental relevance in studying quantum dynamics. In this talk, I give a somewhat subjective overview of the results achieved and the challenges ahead, hoping to demonstrate that this 'beautiful model' certainly deserves continued interest.
We will first review the role of entanglement for the identification and the classification of quantum phases of matter of low dimensional strongly correlated quantum systems to then move to describe some specific quantum information classifiers, in particular quantum Fisher information for local and local operators, to outline to what extent they can describe also multipartite entanglement...
