```
Navez, Patrick, Labo Vaste-Stoffysica en Magnetisme, Katholieke Universiteit Leuven, Celestijnenlaan 200D, B-3001 Leuven, and Graham, Robert.
```*Subsonic critical velocity of a Bose-Einstein condensate at finite temperature*. United States: N. p., 2006.
Web. doi:10.1103/PHYSREVA.73.0.

```
Navez, Patrick, Labo Vaste-Stoffysica en Magnetisme, Katholieke Universiteit Leuven, Celestijnenlaan 200D, B-3001 Leuven, & Graham, Robert.
```*Subsonic critical velocity of a Bose-Einstein condensate at finite temperature*. United States. doi:10.1103/PHYSREVA.73.0.

```
Navez, Patrick, Labo Vaste-Stoffysica en Magnetisme, Katholieke Universiteit Leuven, Celestijnenlaan 200D, B-3001 Leuven, and Graham, Robert. Sat .
"Subsonic critical velocity of a Bose-Einstein condensate at finite temperature". United States.
doi:10.1103/PHYSREVA.73.0.
```

```
@article{osti_20787147,
```

title = {Subsonic critical velocity of a Bose-Einstein condensate at finite temperature},

author = {Navez, Patrick and Labo Vaste-Stoffysica en Magnetisme, Katholieke Universiteit Leuven, Celestijnenlaan 200D, B-3001 Leuven and Graham, Robert},

abstractNote = {Based on the dielectric formalism in the generalized random phase approximation, we generalize the description of a Bose-Einstein condensed gas to allow for a relative velocity between the superfluid and normal fluid. In this model, we determine the critical velocity dynamically as the transition point between stable and unstable dynamics. Unlike the zero temperature case, at finite temperature the relative critical velocity of a dilute Bose-Einstein gas is lower than the sound velocity. The requirement of Galilean invariance essential to obtain an invariant result necessitates the use of a gapless and conserving approximation.},

doi = {10.1103/PHYSREVA.73.0},

journal = {Physical Review. A},

number = 4,

volume = 73,

place = {United States},

year = {Sat Apr 15 00:00:00 EDT 2006},

month = {Sat Apr 15 00:00:00 EDT 2006}

}