Speaker:  Tilman Enss (ITP, Heidelberg University)

Title of Talk: Polarons in Superfluids

Abstract: A heavy impurity moving in a superfluid has remarkable properties. The medium dresses the impurity into a polaronic quasiparticle, and at strong binding the polaron can substantially deform the surrounding medium. When there are two or more polarons, fluctuations of the medium induce a Casimir interaction between polarons. We investigate this induced interaction using the Gross-Pitaevskii equation and effective field theory (EFT) and find regimes of scale invariance, Yukawa and power-law scaling.

Venue (HYBRID-EVENT): Goldene Box, Physikalisches Institut, INF 226, 69120 Heidelberg AND all talks will also be streamed via the permanent Zoom-link:

Meeting ID: 946 0240 1603
Passcode: 386993

13:00 – 13:45  talk
13:45-14:00   questions & discussion
14:00 pizza


The main idea of the CRC 1225 Lunch Seminars is to bring together all scientists involved in our collaboration on a regular basis to allow exchange and discussion even outside one’s own research topics. We therefore invite all PIs and working group members of the CRC 1225 ISOQUANT to participate in the Lunch Seminars and to use this opportunity for getting to know each other, fruitful discussions and valuable exchange.