Written via a uncommon physicist and prime researcher, this quantity describes the speculation and chosen functions of 1 of crucial mathematical instruments utilized in the theoreticial research of collective excitations in statistical physics. The textual content bargains an advent to useful quintessential suggestions in equilibrium statistical physics, and discusses the expression of partition services and eco-friendly services by way of practical integrals. Sections of the ebook care for the applying of practical integrals in superfluid Bose structures, structures with Coulomb interplay, and superfluid Fermi platforms. The e-book additionally considers the applying of the idea that of Bose-condensation of auxiliary fields to the speculation of crystals, heavy atoms and likewise to the idea of version Hamiltonians.
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