Superfluidity as a research area investigates quantum condensed phases of matter that exhibit frictionless flow, quantized circulation, and macroscopic quantum coherence, primarily in systems such as liquid helium-4, helium-3, ultracold atomic gases, and exciton–polariton condensates. The field focuses on understanding the microscopic mechanisms underlying Bose–Einstein condensation and fermionic pairing, the role of symmetry breaking and topological order, and the dynamics of quantized vortices and collective excitations. Research integrates many-body theory, quantum field methods, and precision low-temperature experiments to probe phase diagrams, critical phenomena, transport properties, and potential applications in quantum technologies and precision metrology.
An international research team from Innsbruck and Geneva has, for the first time, probed the dimensional crossover for ultracold quantum matter. In the regime between one and two dimensions, the quantum particles perceive ...
Soft Matter
Apr 10, 2024
0
26
Scientists have for the first time created a giant quantum vortex to mimic a black hole in superfluid helium that has allowed them to see in greater detail how analog black holes behave and interact with their surroundings.
General Physics
Mar 20, 2024
0
1013
According to a recent study from the University of Helsinki, published in the journal Physical Review Letters, a vortex of a superfluid that has been quantized four times has three ways of dividing, depending on the temperature.
General Physics
Feb 16, 2024
0
50
In most materials, heat prefers to scatter. If left alone, a hotspot will gradually fade as it warms its surroundings. But in rare states of matter, heat can behave as a wave, moving back and forth somewhat like a sound wave ...
General Physics
Feb 8, 2024
0
2897
Every fluid—from Earth's atmosphere to blood pumping through the human body—has viscosity, a quantifiable characteristic describing how the fluid will deform when it encounters some other matter. If the viscosity is higher, ...
Soft Matter
Jan 30, 2024
6
149
By using a special combination of laser beams as a very fast stirrer, RIKEN physicists have created multiple vortices in a quantum photonic system and tracked their evolution. This system could be used to explore exotic new ...
Nanophysics
Nov 21, 2023
0
42
Scientists from the Graduate School of Engineering Science at Osaka University have shown how silicon nanoparticles can become trapped inside the vortices that form inside superfluid helium. This work opens up new possibilities ...
Nanophysics
May 4, 2022
0
222
In a new study, scientists at the Indian Institute of Science (IISc) have experimentally shown the existence of two species of few electron bubbles (FEBs) in superfluid helium for the first time. These FEBs can serve as a ...
Nanophysics
Jul 12, 2021
0
232
