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<font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" color="#212121"><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3"><span style="font-size: 12pt; font-family: "Calibri Light", "Helvetica Light", sans-serif;">Dear Juniors,</span></font></font></div>
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<font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" color="#212121"><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3"><span style="font-size: 12pt;"><span style="font-family: "Calibri Light", "Helvetica Light", sans-serif;">It
is my pleasure to announce this week's Scientific Fika. Join us on Friday</span><b><span style="font-family: "Calibri Light", "Helvetica Light", sans-serif;"> the 11</span><sup><span style="font-family: "Calibri Light", "Helvetica Light", sans-serif;">th</span></sup><span style="font-family: "Calibri Light", "Helvetica Light", sans-serif;">
of November at 16:00</span></b><span style="font-family: "Calibri Light", "Helvetica Light", sans-serif;"> for a great talk by Nadia and delicious Swedish pastries.</span></span></font></font></div>
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<font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" color="#212121"><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3"><span style="font-size: 12pt; font-family: "Calibri Light", "Helvetica Light", sans-serif;">Nadia Flodgren</span></font></font></div>
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<font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" color="#212121"><span style="font-family: "Calibri Light", "Helvetica Light", sans-serif;"> </span></font></div>
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<font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" color="#212121">
<div style="margin: 0px;"><font face="Calibri,Helvetica,sans-serif,serif,EmojiFont"><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="5" color="#212121"><span style="font-size: 20pt;"><span style="font-family: "Calibri Light", "Helvetica Light", sans-serif; font-size: 16px;"><span style="font-size: 20pt;">Renormalization
in perturbative <br>
QFT - </span><span style="font-size: 20pt;">How to get rid of infinity</span></span></span></font></font></div>
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<font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" color="#212121"><span style="font-family: "Calibri Light", "Helvetica Light", sans-serif;"> </span></font></div>
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<div align="left" style="text-align: justify; margin: 0px;"><font size="1" style="font-family: "Helvetica Neue", serif, EmojiFont;"><span style="font-size: 12px;"><font size="3" style="font-family: "Calibri Light", "Helvetica Light", sans-serif, serif, EmojiFont;"><span style="font-size: 12pt;"><i><span lang="en-GB" style="font-size: 12pt; font-family: "Calibri Light", "Helvetica Light", sans-serif;">Renormalization
is a collection of techniques used to study a system at different length scales and it can seem quite complicated. It is very important in both quantum field theory and condensed matter, for example in the study of the standard model. In this talk I will focus
on renormalization as it is used in perturbative quantum field theory, where it is used to get rid of inconvenient infinities, and explain how it is performed by using a simple mathematical example (no complicated QFT equations) and the very basics of Feynman
diagrams.</span><span lang="sv" style="font-size: 12pt; font-family: "Calibri Light", "Helvetica Light", sans-serif;"> </span></i></span></font></span></font></div>
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<font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" color="#212121"><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3"><span style="font-size: 12pt; font-family: "Calibri Light", "Helvetica Light", sans-serif;">Place: NORDITA
Floor 6 - Room Mega (in-person only).</span></font><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3"><span style="font-size: 12pt;"><br>
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<font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" color="#212121"><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3"><span style="font-size: 12pt; font-family: "Calibri Light", "Helvetica Light", sans-serif;">Address: </span></font><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3" color="#202124"><span style="font-size: 12pt; font-family: "Calibri Light", "Helvetica Light", sans-serif;">AlbaNova
University Center, Hannes Alfvéns väg 12</span></font></font></div>
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<font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" color="#212121"><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3"><span style="font-size: 12pt; font-family: "Calibri Light", "Helvetica Light", sans-serif;">Please put this
date in your calendar and come to discuss interesting science.</span></font></font></div>
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<font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" color="#212121"><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="2"><span style="font-size: 16px; font-family: "Calibri Light", "Helvetica Light", sans-serif;">We're looking
forward to seeing you!</span></font><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="2" color="#212121"><span style="font-size: 16px;"><br>
</span></font><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="2"><span style="font-size: 16px; font-family: "Calibri Light", "Helvetica Light", sans-serif;">Nadia</span></font><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="2"><span style="font-size: 16px; font-family: "Calibri Light", "Helvetica Light", sans-serif;">, Guilherme
and Nikki</span></font></font></div>
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