Quantum Simulators at Negative Absolute Temperatures
arXiv:1112.4299 · doi:10.1103/PhysRevA.85.043612
Abstract
We propose that negative absolute temperatures in ultracold atomic clouds in optical lattices can be used to simulate quantum systems in new regions of phase diagrams. First we discuss how the attractive SU(3) Hubbard model in three dimensions can be realized using repulsively interacting 173-Yb atoms, then we consider how an antiferromagnetic S=1 spin chain could be simulated using spinor 87-Rb or 23-Na atoms. The general idea to achieve negative absolute temperatures is to reverse the sign of the external harmonic potential. Energy conservation in a deep optical lattice imposes a constraint on the dynamics of the cloud, which can relax toward a T<0 state. As the process is strongly non-adiabatic, we estimate the change of the entropy.
content equivalent to published version, 8 pages, 6 figures
References in corpus (22)
- Many-Body Physics with Ultracold Gases
- Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
- Nonequilibrium dynamics of closed interacting quantum systems
- Quantum Criticality in Heavy Fermion Metals
- Synthetic magnetic fields for ultracold neutral atoms
- First direct observation of Dirac fermions in graphite
- Collisional stability of a three-component degenerate Fermi gas
- Realization of SU(2)*SU(6) Fermi System
- A synthetic electric force acting on neutral atoms
- Three-body recombination in a three-state Fermi gas with widely tunable interactions
- Atomic three-body loss as a dynamical three-body interaction
- Implementation of Spin Hamiltonians in Optical Lattices
- Color Superfluidity and "Baryon" Formation in Ultracold Fermions
- Cooling in strongly correlated optical lattices: prospects and challenges
- Metastable superfluidity of repulsive fermionic atoms in optical lattices
- Equilibration rates and negative absolute temperatures for ultracold atoms in optical lattices
- Trionic phase of ultracold fermions in an optical lattice: A variational study
- Atomic Gases at Negative Kinetic Temperature
- Field-induced phase transitions of repulsive spin-1 bosons in optical lattices
- Magnetism and domain formation in SU(3)-symmetric multi-species Fermi mixtures
- Interacting Fermionic Atoms in Optical Lattices Diffuse Symmetrically Upwards and Downwards in a Gravitational Potential
- Loss-induced phase separation and pairing for 3-species atomic lattice fermions
Cited by in corpus (8)
- Negative Absolute Temperature for Motional Degrees of Freedom
- Dynamical sign reversal of magnetic correlations in dissipative Hubbard models
- Statistical Mechanics of Systems with Negative Temperature
- Magnetized Kerr/CFT Correspondence
- Superfluid, staggered state, and Mott insulator of repulsively interacting three-component fermionic atoms in optical lattices
- Relaxation towards negative temperatures in bosonic systems: Generalized Gibbs ensembles and beyond integrability
- Fugacity versus chemical potential in nonadditive generalizations of the ideal Fermi-gas
- Absence of quasiclassical coherence in mean-field dynamics of bosons in a kinetically frustrated regime