[institut] SCL Seminar: Antun Balaž, Thursday, 14 September, 14:00

[Nenad Vukmirovic]

Dear colleagues,

You are cordially invited to the SCL seminar of the Center for the Study 
of Complex Systems, which will be held on Thursday, 14 September 2017 at 
14:00 in the library reading room “Dr Dragan Popović" of the Institute 
of Physics Belgrade. The talk entitled

Droplet Formation in Quantum Ferrofluids

will be given by Dr Antun Balaž (Scientific Computing Laboratory, Center 
for the Study of Complex Systems, Institute of Physics Belgrade). 
Abstract of the talk:

In the recent experiment [1], the Rosensweig instability was observed in 
a quantum ferrofluid of a strongly dipolar BEC, leading to a formation 
of atomic droplets. In Ref. [2] it was demonstrated that the stability 
of such droplets is provided by the quantum fluctuation correction of 
the ground-state energy [3, 4]. In this talk we will extend this 
previous theoretical description and develop a full Bogoliubov-Popov 
theory, which also takes into account the condensate depletion due to 
quantum fluctuations. We will apply this approach to numerically [5] 
study the droplet formation in a BEC of atomic dysprosium, induced by a 
sudden reduction of the s-wave scattering length or tilting of the 
dipoles. We will also study how phase imprinting affects the droplet 
formation process.

[1] H. Kadau, et al., Nature 530, 194 (2016).
[2] L. Chomaz, et al., Phys. Rev. X 6, 041039 (2016).
[3] T. D. Lee, K. Huang, and C. N. Yang, Phys. Rev. 106, 1135 (1957).
[4] A. R. P. Lima and A. Pelster, Phys. Rev. A 84, 041604(R) (2011); 
Phys. Rev. A 86, 063609 (2012).
[5] V. Lončar, et al., Comput. Phys. Commun. 200, 406 (2016); Comput. 
Phys. Commun. 209, 190 (2016).

Best regards,

-- 
Dr Nenad Vukmirović,
Research Professor,
Scientific Computing Laboratory,
Institute of Physics Belgrade,
Serbia.
URL: http://www.scl.rs/nenad