Buongiorno
ricevo e con piacere inoltro
Saluti
Alessandra

---------- Forwarded message ---------
From: Serena Cenatiempo <serena.cenatiempo@gssi.it>
Date: Mon, 8 May 2023 at 08:00
Subject: SMAQ Seminar / J. Björnberg / today at 2.30 pm



Dear all,

This is a gentle reminder for today SMAQ seminar by 

Jakob Björnberg (Chalmers and Göteborg University)

on "Dimerization in a quantum spin chain", see abstract below.

The talk will be at 14.30 at the GSSI Auditorium (Viale Jacobucci 2) and will be streamed via zoom at the link:

https://zoom.us/j/87571297606?pwd=bGY1ZGxpd2Y0THBEdG53Zmt3MVZ1UT09

ID riunione: 875 7129 7606
Passcode: SMAQ2223

We are looking forward to meeting you today,
Alessia and Serena

---------------------------------
Date: May 8th, 2023
Hour: 2.30 pm
Room:  GSSI Auditorium  and online
Speaker: Jakob Björnberg  (Chalmers and Göteborg University)

Title: Dimerization in a quantum spin chain

Abstract: This talk concerns the phenomenon of symmetry-breaking in statistical physics, particularly "dimerization" where the broken symmetry is that of translation-invariance. After reviewing the main ideas of symmetry-breaking in statistical physics, I will describe a quantum spin system in one dimension where we prove that dimerization occurs for large enough spin. The proof uses a probabilistic representation in terms of a collection of random loops and a cluster-expansion. Based on the paper arXiv:2101.11464 which is joint work with Peter Mühlbacher, Bruno Nachtergaele and Daniel Ueltschi.



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Serena Cenatiempo
Gran Sasso Science Institute (GSSI)
Viale Crispi n.7, 67100 - L'Aquila (Italy)

phone: +39  0862 428 0276
email: serena.cenatiempo[at]gssi[dot]com
homepage: http://www.serenacenatiempo.it/


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Prof. Alessandra Faggionato


Department of Mathematics
University "La Sapienza"
Piazzale Aldo Moro, 5
00185 - Rome

Office 5, Phone  (0039)  06 49913252
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