Functional Renormalization and Ultracold Quantum Gases

Functional Renormalization and Ultracold Quantum Gases
Author :
Publisher : Springer Science & Business Media
Total Pages : 200
Release :
ISBN-10 : 9783642141133
ISBN-13 : 3642141137
Rating : 4/5 (33 Downloads)

Book Synopsis Functional Renormalization and Ultracold Quantum Gases by : Stefan Flörchinger

Download or read book Functional Renormalization and Ultracold Quantum Gases written by Stefan Flörchinger and published by Springer Science & Business Media. This book was released on 2010-09-14 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern techniques from quantum field theory are applied in this work to the description of ultracold quantum gases. This leads to a unified description of many phenomena including superfluidity for bosons and fermions, classical and quantum phase transitions, different dimensions, thermodynamic properties and few-body phenomena as bound state formation or the Efimov effect. The non-perturbative treatment with renormalization group flow equations can account for all known limiting cases by solving one single equation. It improves previous results quantitatively and brings qualitatively new insights. As an example, new quantum phase transitions are found for fermions with three spin states. Ultracold atomic gases can be seen as an interesting model for features of high energy physics and for condensed matter theory. The research reported in this thesis helps to solve the difficult complexity problem in modern theoretical physics.


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