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<div class=""><font size="4" class="">Dear All,<br class="">
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Here is an announcement for the theory seminar:<br class="">
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<div style="background-color: rgb(255, 255, 255);" class=""><font size="4" class=""><span style="color: rgb(34, 34, 34);" class=""><b class=""><u class="">Monday</u></b>, March 2, 1:00PM, Room L102</span><br class="">
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<div style="background-color: rgb(255, 255, 255);" class=""><font size="4" class="">Barak Gabai (Harvard University)</font></div>
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<div dir="auto" class=""><font size="4" class="">Title: Ising field theory in 2d: Hamiltonian truncation meets S-matrix bootstrap</font></div>
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<div dir="auto" class=""><font size="4" class="">Abstract: We explore the analytic structure of the non-perturbative S-matrix in arguably the simplest family of massive non-integrable quantum field theories: the Ising field theory (IFT) in two dimensions, which
may be viewed as the Ising CFT deformed by its two relevant operators, or equivalently, the scaling limit of the Ising model in a magnetic field. Our strategy is that of collider physics: we employ Hamiltonian truncation method (TFFSA) to extract the scattering
phase of the lightest particles in the elastic regime, and combine it with S-matrix bootstrap methods based on unitarity and analyticity assumptions to determine the analytic continuation of the 2 to 2 S-matrix element to the complex s-plane.</font></div>
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<div class=""><font size="4" class=""><span style="background-color: rgb(255, 255, 255);" class="">Bluej</span><span style="background-color: rgb(255, 255, 255);" class="">eans connection: </span><span style="background-color: rgb(255, 255, 255); color: rgb(34, 34, 34);" class=""><a href="https://bluejeans.com/610445877" target="_blank" style="color: rgb(17, 85, 204);" class=""><span style="color: rgb(12, 100, 192);" class="">https://bluejeans.<wbr class="">com/610445877</span></a></span><span style="background-color: rgb(255, 255, 255); color: rgb(12, 100, 192);" class=""> <br class="">
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<div class=""><font size="4" class="">Thank you.</font></div>
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<div class=""><font size="4" class="">Carlota, Miguel & Raza</font></div>
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