What is recorded here?
Nascimbène, Navon and colleagues used images of trapped lithium atoms to reconstruct local pressure and the equation of state of a strongly interacting Fermi gas. At unitarity, their measurements mapped temperature dependence and the change between normal and superfluid behavior. They then varied the interaction strength across the BEC–BCS crossover, measuring balanced-superfluid thermodynamics and phase boundaries in spin-imbalanced gases. The data quantitatively tested beyond-mean-field corrections and many-body calculations, while identifying where a simple gas of polarons ceased to describe the normal phase.
Source-linked catalogue note. A detailed explanatory guide has not yet been prepared for this entry.
Scientific scope
Local homogeneous properties are inferred from trapped density profiles using equilibrium, a local-density approximation, trap calibration and reference equations of state. The low-temperature crossover data approximate zero temperature; interpolation and limiting expansions constrain parts of the reported surface. Fitted coefficients and phase boundaries retain their stated uncertainties and model inputs. These experiments do not measure every temperature and spin imbalance, prove exact many-body formulas or directly observe a microscopic pairing mechanism.
Read the original work
- Exploring the thermodynamics of a two-component Fermi gas with universal interactions (arXiv0911.0747v2)
- The Equation of State of a Low-Temperature Fermi Gas with Tunable Interactions (arXiv1004.1465v1)
- Exploring the Thermodynamics of a Universal Fermi Gas
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People and systems
Sylvain Nascimbène; Nir Navon; Kaijun Jiang; Frédéric Chevy; Christophe Salomon
These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.
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English catalogue narrative
Pressure profiles map Fermi-gas thermodynamics across tunable interactions
Nascimbène, Navon and colleagues used images of trapped lithium atoms to reconstruct local pressure and the equation of state of a strongly interacting Fermi gas. At unitarity, their measurements mapped temperature dependence and the change between normal and superfluid behavior. They then varied the interaction strength across the BEC–BCS crossover, measuring balanced-superfluid thermodynamics and phase boundaries in spin-imbalanced gases. The data quantitatively tested beyond-mean-field corrections and many-body calculations, while identifying where a simple gas of polarons ceased to describe the normal phase.
Scientific scope
Local homogeneous properties are inferred from trapped density profiles using equilibrium, a local-density approximation, trap calibration and reference equations of state. The low-temperature crossover data approximate zero temperature; interpolation and limiting expansions constrain parts of the reported surface. Fitted coefficients and phase boundaries retain their stated uncertainties and model inputs. These experiments do not measure every temperature and spin imbalance, prove exact many-body formulas or directly observe a microscopic pairing mechanism.
Reading status
This is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.
People and systems
Sylvain Nascimbène; Nir Navon; Kaijun Jiang; Frédéric Chevy; Christophe Salomon
These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.