Virial expansion for a strongly correlated Fermi gas.
- Xiaji Liu, Hui Hu, P. Drummond
- PhysicsPhysical Review Letters
- 31 March 2009
Using a high temperature virial expansion, this work proposes a practical way to determine the expansion coefficients for both harmonically trapped and homogeneous cases, and calculates the third order coefficient b{3}(T) at finite temperatures T.
Ultra-cold Fermi gases
- Xiaji Liu, P. Drummond, Hui Hu
- Physics
- 2005
Molecule formation in ultracold degenerate quantum gases is one of the central topics in the overall ACQAO program, due to the strong quantum correlations in these systems. An experimental program in…
Equation of state of a superfluid Fermi gas in the BCS-BEC crossover
- Hui Hu, Xiaji Liu, P. Drummond
- Physics
- 2 June 2005
We present a theory for a superfluid Fermi gas near the BCS-BEC crossover, including pairing fluctuation contributions to the free energy similar to that considered by Nozieres and Schmitt-Rink for…
Quantum fluctuations in the BCS-BEC crossover of two-dimensional Fermi gases
- Lianyi He, Haifeng Lv, G. Cao, Hui Hu, Xiaji Liu
- Physics
- 23 June 2015
We present a theoretical study of the ground state of the BCS-BEC crossover in dilute two-dimensional Fermi gases. While the mean-field theory provides a simple and analytical equation of state, the…
A one-dimensional liquid of fermions with tunable spin
- G. Pagano, M. Mancini, L. Fallani
- PhysicsNature Physics
- 2 February 2014
The physics of one-dimensional many-body systems is rich but still insufficiently understood. An ultracold atom experiment investigates the behaviour of one-dimensional strongly correlated fermions…
Universal contact of strongly interacting fermions at finite temperatures
- Hui Hu, Xiaji Liu, P. Drummond
- Physics
- 16 November 2010
The recently discovered universal thermodynamic behavior of dilute, strongly interacting Fermi gases also implies a universal structure in the many-body pair-correlation function at short distances,…
Anderson localization transition in a robust PT -symmetric phase of a generalized Aubry-André model
- Sebastian Schiffer, Xiaji Liu, Hui Hu, Jia Wang
- Physics
- 29 January 2021
We study a generalized Aubry-Andr\'e model that obeys $\mathcal{PT}$ symmetry. We observe a robust $\mathcal{PT}$-symmetric phase with respect to system size and disorder strength, where all…
Three attractively interacting fermions in a harmonic trap: Exact solution, ferromagnetism, and high-temperature thermodynamics
- Xiaji Liu, Hui Hu, P. Drummond
- Physics
- 7 July 2010
Three fermions with strongly repulsive interactions in a spherical harmonic trap constitute the simplest nontrivial system that can exhibit the onset of itinerant ferromagnetism. Here, we present…
Phase diagram of a non-Abelian Aubry-André-Harper model with p -wave superfluidity
- Jun Wang, Xiaji Liu, Gao Xianlong, Hui Hu
- Physics
- 14 May 2015
We theoretically study a one-dimensional quasi-periodic Fermi system with topological $p$-wave superfluidity, which can be deduced from a topologically non-trivial tight-binding model on the square…
Probing Majorana fermions in spin-orbit-coupled atomic Fermi gases
- Xiaji Liu, Leidi Jiang, H. Pu, Hui Hu
- Physics
- 8 November 2011
We examine theoretically the visualization of Majorana fermions in a two-dimensional trapped ultracold atomic Fermi gas with spin-orbit coupling. By increasing an external Zeeman field, the trapped…
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