Balkan String Webinar

the platform for high-energy theorists from the Balkans

The Balkan String Webinar provides a platform for high-energy theorists from the Balkans to exchange ideas, meet regularly, and keep in touch with the leading experts in the field in an easy way – via Zoom meetings. Lecturers are recruited from local institutions and worldwide, with special emphasis on scientists from the diaspora. But ultimately the only criterion for selecting topics is the scientific interest.

next webinars

our next webinars

14:00 GMT+1

05-12-25

Anastasios Petkou

Aristotle University of Thessaloniki

The thermal representation of conformal ladder integrals

I will present details of a recently discovered representation of conformal four-point ladder integrals as thermal one-point functions in scalar field theories. Conformal ladder integrals can be constructed from the partition function of two harmonic oscillators twisted by an imaginary chemical potential. For any even dimension D and any loop order L they satisfy a familiar-looking second order differential equation. Thermal one-point functions of higher-spin operators correspond to linear combinations of multi-loop ladder graphs in D= 2 and D= 4 dimensions. A simple derivation for the all-loop resummation of conformal ladder integrals for arbitrary D is also given. Some possible connections if this work and recent developments in the thermal bootstrap, multiloop calculations, integrability, AdS/CFT and string theory will be discussed. https://belgrade-strings-ipb-ac-rs.zoom.us/j/6664242666?pwd=QW5UjVWFuadA4MBhB0K6wockM1OxPZ.1&omn=97790378548 Meeting ID: 666 4242 666 Passcode: 314159

14:00 GMT+1

16-01-26

Sašo Grozdanov

University of Ljubljana and University of Edinburgh

TBA

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About Us

Balkan String Webinar is an outgrowth of the initiative started at the ICTP meeting Black holes, strings and holography (October 2023), aimed at invigorating string theory research in the Balkans/Southeastern Europe. Once in three weeks we organize a Zoom seminar on a relevant topic at the frontier of modern string theory. Currently in charge of the seminar is Mihailo Čubrović (Institute of Physics Belgrade, Serbia).

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About Balkan String Webinar - scientific collaboration and research

our past webinars

14:00 GMT+1

07-11-25

Alexandre Belin

Milan Bicocca

Pure 3D Gravity: a status report

Pure general relativity with a negative cosmological constant can in principle be a constant UV theory on its own. Following the AdS/CFT correspondence, the boundary dual should be some two dimensional CFT. Nevertheless, finding the boundary dual for this simple bulk theory remains an open problem. In this talk, I will review the status for the boundary dual of pure 3D gravity. I will discuss the interpretation of this theory in terms of an ensemble of 2d CFTs, review the successes of this approach and mention open questions. https://belgrade-strings-ipb-ac-rs.zoom.us/j/6664242666?pwd=QW5UjVWFuadA4MBhB0K6wockM1OxPZ.1&omn=97736682374 Meeting ID: 666 424 2666 Passcode: 314159

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