Pointlike probes of superstring-theoretic superfluids

Steven S. Gubser, Amos Yarom

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


In analogy with an experimental setup used in liquid helium, we use a pointlike probe to study superfluids which have a gravity dual. In the gravity description, the probe is represented by a hanging string. We demonstrate that there is a critical velocity below which the probe particle feels neither drag nor stochastic forces. Above this critical elocity, there is power-law scaling for the drag force, and the stochastic forces are characterized by a finite, velocity-dependent temperature. This temperature participates in two simple and general relations between the drag force and stochastic forces. The formula we derive for the critical velocity indicates that the low-energy excitations are massless, and they demonstrate the power of stringy methods in describing strongly coupled superfluids.

Original languageEnglish (US)
Article number41
JournalJournal of High Energy Physics
Issue number3
StatePublished - 2010

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


  • Black holes in string theory
  • Gauge-gravity correspondence


Dive into the research topics of 'Pointlike probes of superstring-theoretic superfluids'. Together they form a unique fingerprint.

Cite this