6 papers
Dynamics of spontaneous symmetry breaking in a space-time crystal
J. N. Stehouwer, J. Smits, P. van der Straten +1
We present the theory of spontaneous symmetry breaking (SSB) of discrete time translations as recently realized in the space-time crystals of an atomic Bose-Einstein condensate. Th…
Spontaneous symmetry breaking in a driven-dissipative system
J. Smits, H. T. C. Stoof, P. van der Straten
Spontaneous symmetry breaking (SSB) is a key concept in physics that for decades has played a crucial role in the description of many physical phenomena in a large number of differ…
On the long-term stability of space-time crystals
J. Smits, H. T. C. Stoof, P. van der Straten
We investigate a space-time crystal in a superfluid Bose gas. Using a well-controlled periodic drive we excite only one crystalline mode in the system, which can be accurately mode…
Imaging trapped quantum gases by off-axis holography
J. Smits, A. P. Mosk, P. van der Straten
We present a dispersive imaging method for trapped quantum gases based on digital off-axis holography. Both phase delay and intensity of the probe field are determined from the sam…
Dynamics of a Space-Time Crystal in an Atomic Bose-Einstein Condensate
Lei Liao, Jasper Smits, Peter van der Straten +1
A space-time crystal has recently been observed in a superfluid Bose gas. Here we construct a variational model that allows us to describe from first principles the coupling betwee…
Observation of a space-time crystal in a superfluid quantum gas
Jasper Smits, Lei Liao, Henk Stoof +1
Time crystals are a phase of matter, for which the discrete time symmetry of the driving Hamiltonian is spontaneously broken. The breaking of discrete time symmetry has been observ…