Corpus ID: 235899290

4D-XY Superfluid Transition and Dissipation in $^4$He Confined in Nanoporous Media

@inproceedings{Tani20214DXYST,
  title={4D-XY Superfluid Transition and Dissipation in \$^4\$He Confined in Nanoporous Media},
  author={Tomoyuki Tani and Yusuke Nago and Satoshi Murakawa and Keiya Shirahama},
  year={2021}
}
$^4$He confined in nanoporous Gelsil glass is a unique, strongly correlated Bose system exhibiting quantum phase transition (QPT) by controlling pressure. Previous studies revealed that the QPT occurs with four - dimensional (4D) XY criticality, which appears in the zero-temperature limit of the superfluid density. However, the $P-T$ phase diagram also suggested that 4D XY nature appears at finite temperatures. Here, we have determined the critical exponent of the superfluid density of $^4$He… Expand