Analogue black hole in spinorial ultracold condensate*

Inderpreet Kaur and Sankalpa Ghosh

¹Department of Physics, Indian Institute of Technology Delhi, New Delhi-110016, India


Quantum fluids such as ultracold condensate of bosonic atoms has long been suggested as an important candidate for studying analogue black hole (sonic black hole or dumb hole). Existence of such sonic black hole, their event horizon, and related Hawking radiation was recently confirmed experimentally. In this work we report a study of such sonic black hole in the spinor condensates with spin-orbit coupling. We point out distortion of the sonic horizon as well as in the analogue space-time metric for such spinorial condensate as compared to the one seen in the scalar condensate and several other interesting features. We also analyze the consequences of our findings on the sonic analogue of Hawking radiation from such spinorial condensates.