RTG2575 QFT Colloquium
QFT Colloquium of the RTG2575 Rethinking Quantum Field Theory.
iCal link: https://kal.hu-berlin.de/SOGo/dav/public/patellaa/Calendar/749E-5BDAE180-D-1B13AF80.ics
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Higher-twist Regge trajectories in CFTs
Speaker: Petr Kravchuk (King's College London)Date: Friday, 26 Apr 2024
Time: 2:00pm (Europe/Berlin)
Location: IRIS 1.221
On general grounds, the spectrum of a Conformal Field Theory (CFT) is expected to be extremely complicated away from special limits. One such limit consists of the lowest energy states for every angular momentum, known as the leading-twist states. In this talk I will discuss the structures that emerge in the spectrum as one departs from this limit towards the higher-twist states, focusing especially on the Regge trajectories. In particular, I will describe a general mechanism that reconciles the idea of Regge trajectories with the growing number of states at large spin. I will then demonstrate how this mechanism works in the case of one-loop phi^4 Wilson-Fisher theory in epsilon-expansion. This example will also clarify the properties of double-twist trajectories and light-cone bootstrap at higher-twist. Finally, I will briefly discuss a work in progress on going beyond the double-twist limit.
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Speaker: Dr. Andrea Puhm (CPHT, Ecole Polytechnique, Palaiseau cedex)Date: Friday, 24 May 2024
Time: 2:00pm (Europe/Berlin)
Location: IRIS 1.221
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Speaker: TBADate: Friday, 21 Jun 2024
Time: 2:00pm (Europe/Berlin)
Location: IRIS 1.221
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Speaker: TBADate: Friday, 12 Jul 2024
Time: 2:00pm (Europe/Berlin)
Location: IRIS 1.221
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