出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：Trapped and cooled gases of alkali atoms can be manipulated to exhibit a variety of interesting
phenomena. For example, dilute gases of fermionic atoms, in 2 hyperfine states, can be cooled
to temperatures where they become superfluid. An external field can be applied to tune the scattering
length a. When |a| exceeds the interparticle spacing, nonperturbative tools are needed to
study the system theoretically. The unitary limit, |a| → ¥, is particularly interesting due to its
universality and symmetry. Lattice field theory and effective field theory can be used to systematically
calculate properties of this system. Results are presented for the finite temperature phase
transition and for behavior near zero temperature.
