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High Energy


Joint Theory Seminar: Albert Schwarz

Description <p>Joint Theory Seminar Speaker:&nbsp;Albert Schwarz<br />mail:&nbsp;<br />Title:&nbsp;Thermo-field dynamics and collisions of quasi-particles<br />Host:&nbsp; John Terning<br />Room: 432<br />Abstract:</p><p>The quantum theory can be formulated in the language&nbsp; of positive functionals on Weyl or Clifford algebra (L-functionals).&nbsp; It is shown that&nbsp; this language gives simple understanding of diagrams&nbsp; of Keldysh formalism (that coincide in our case with the diagrams of thermo-field dynamics). The&nbsp; matrix elements of the scattering matrix in the formalism of L-functionals are related to inclusive cross-sections, therefore we suggest&nbsp; the name &quot;inclusive scattering matrix&quot; for this notion.</p><p>The inclusive scattering matrix can be expressed in terms of on-shell&nbsp; values of generalized Green functions. This notion is necessary if we want to analyze collisions of quasiparticles.</p>
Date Mon, April 29, 2019
Time 1:30pm-2:30pm PDT
Duration 1 hour
Access Public
Created by High-Energy Seminars
Updated Thu, April 25, 2019 9:41am PDT
Send Reminder Yes  -  0 days 4 hour 0 minutes before start

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