Deutsch Intern
Theoretical Physics III

Theoretical Physics III

Department Chair

Prof. Dr. Johanna Erdmenger    

    Roomnumber: 02.022


Frau Nelia Meyer

    Visiting Time: Mo - Fr 9:00 to 11:30

    Roomnumber: E223

    Tel.: 0049-931-31-85131
    Fax: 0049-931-888-5141

Mailing Address:

Lehrstuhl für Theoretische Physik III

Institut für Theoretische Physik und Astrophysik
Universität Würzburg
Am Hubland
97074 Würzburg

Here are directions to our chair

Lectures in the springsemester 2017:

  • Dualität zwischen Eich-und Gravitationstheorien  
  • Seminar Quantengravitation, Quanteninformation und statistische Mechanik  
  • Seminar Quantenfeldtheorie und Gravitation
  • Vorlesung Stringtheorie 1
  • Seminar Hydrodynamischer Transport in stark gekoppelten Systemen
  • Seminar zur AdS/CFT Korrespondenz

more information





Dr. Mario Flory (Jagiellonian University)

Time and Venue:

Tue Mar 28 1415 (sharp) seminar room SE5


A complexity/fidelity susceptibility g-theorem for AdS3/BCFT2


We use a recently proposed holographic Kondo model as a well-understood example of AdS/boundary CFT (BCFT) duality, and show explicitly that in this model the bulk volume decreases along the RG flow. We then obtain a proof that this volume loss is indeed a generic feature of AdS/BCFT models of the type proposed by Takayanagi in 2011. According to recent proposals holographically relating bulk volume to such quantities as complexity or fidelity susceptibility in the dual field theory, this suggests the existence of a complexity or fidelity susceptibility analogue of the Affleck-Ludwig g-theorem, which famously states the decrease of boundary entropy along the RG flow of a BCFT. We comment on this possibility.

Summary of the work of our Chair:

Our research consists of establishing new relations between quantum field theory on the one hand and gravitation on the other. These new relations are called dualities. In this way, we gain new insights into the quantum nature of gravity. Moreover, we use these dualities to calculate observables for strongly coupled quantum systems. These systems occur frequently in physics, but are often difficult to describe with established methods. Our methods are applicable to condensed matter physics as well as elementary particle physics. A further research focus are new connections between quantum information and statistical mechanics.

Calculation of physical observables in strongly coupled systems from the dual black hole geometry


Arbeit zur Zeitabhängigkeit im holographischen Kondo-Modell zur Veröffentlichung angenommen:

J. Erdmenger, M. Flory, M. Newrzella, M. Strydom, J. Wu, Quantum quenches in a holographic Kondo model', accepted for publication in Journal of High Energy Physics.