Collective Excitations Fermi And Bose Systems
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Collective Excitations In Fermi And Bose Systems
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Author : Carlos A Bertulani
language : en
Publisher: World Scientific
Release Date : 1999-05-31
Collective Excitations In Fermi And Bose Systems written by Carlos A Bertulani and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999-05-31 with categories.
Collective excitations in Fermi and Bose systems are key phenomena in understanding the structure and dynamics of many-body systems with the manifestation of different statistics. This volume presents recent developments in atomic and nuclear physics which have revealed intriguing features which are under intense scrutiny by both theorists and experimentalists.
Collective Excitations Fermi And Bose Systems
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Author : Carlos A. Bertulani
language : en
Publisher: World Scientific Publishing Company Incorporated
Release Date : 1999
Collective Excitations Fermi And Bose Systems written by Carlos A. Bertulani and has been published by World Scientific Publishing Company Incorporated this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Science categories.
Collective excitations in Fermi and Bose systems are key phenomena in understanding the structure and dynamics of many-body systems with the manifestation of different statistics. This volume presents recent developments in atomic and nuclear physics which have revealed intriguing features which are under intense scrutiny by both theorists and experimentalists.
Collective Excitations In Unconventional Superconductors And Superfluids
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Author : Peter Brusov
language : en
Publisher: World Scientific
Release Date : 2010
Collective Excitations In Unconventional Superconductors And Superfluids written by Peter Brusov and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Science categories.
This title gives a complete and detailed description of collective modes (CMs) in unconventional superfluids and superconductors (USC).
Functional Integrals And Collective Excitations
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Author : Victor Nikolaevich Popov
language : en
Publisher: Cambridge University Press
Release Date : 1987
Functional Integrals And Collective Excitations written by Victor Nikolaevich Popov and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Mathematics categories.
This book describes the theory and selected applications of one of the most important mathematical tools used in the theoretical investigation of collective excitations in statistical physics, such as occur in superfluidity, superconductivity, plasma dynamics, superradiation, and in phase transitions.
From Strongly Interacting Bose Fermi Mixtures To Ultracold Molecules
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Author : Zoe Ziyue Yan
language : en
Publisher:
Release Date : 2020
From Strongly Interacting Bose Fermi Mixtures To Ultracold Molecules written by Zoe Ziyue Yan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
This thesis describes experiments on ultracold quantum gases. First, I discuss quantum simulation involving mixtures of bosonic and fermionic atoms. Second, I present work on creating and controlling ultracold dipolar molecules of 23Na40K. The rich phase diagram of Bose-Fermi mixtures was studied with our system of bosonic 23Na and fermionic 40K atoms. When the fermions were immersed as a minority species within a Bose-Einstein condensate, the system realized the canonical Bose polaron quasiparticle, which is an important paradigm in condensed matter physics. We investigated the strongly-coupled Bose polaron as it approached the quantum critical regime of the Bose-Fermi mixture. Using radiofrequency spectroscopy, we probed the binding energy and decay rate as a function of temperature. In particular, the decay rate was found to scale linearly with temperature near the Planckian rate k[subscript B]T/h− in the unitarity-limited regime, a hallmark of quantum critical behavior. Bose-Fermi mixtures host a complex spectrum of collective excitations, which can shed light on their properties such as collisional relaxation rates, equilibrium equations of state, and kinetic coefficients. We probed the low-lying collective modes of a Bose-Fermi mixture across different interaction strengths and temperatures. The spin-polarized fermions were observed to transition from ballistic to hydrodynamic flow induced by interactions with the bosonic excitations. Our measurements establish Bose-Fermi mixtures as a fruitful arena to understand hydrodynamics of fermions, with important connections to electron hydrodynamics in strongly-correlated 2D materials. The second part of this thesis describes the creation and manipulation of ultracold molecules in their ground state. Molecules have more tunable degrees of freedom compared to atoms, paving the way for studies of quantum state-controlled chemistry, quantum information, and exotic phases of matter. We created loosely-bound Feshbach molecules from ultracold atoms, then transferred those molecules to their absolute electronic, vibrational, rotational, and hyperfine ground state by stimulated Raman adiabatic passage. The rotational level structure, sample lifetimes, and coherence properties were studied, culminating in a demonstration of second-scale nuclear spin coherence times in an ensemble of NaK. Controlling the intermolecular interactions - which can be tunable, anisotropic, and long range - is an outstanding challenge for our field. We induced strong dipolar interactions via the technique of microwave dressing, an alternative to using static electric fields to polarize the molecules. The origin of these dipolar collisions was the resonant alignment of the approaching molecules' dipoles along their intermolecular axis, resulting in strong attraction. Our observations were explained by a conceptually simple two-state picture based on the Condon approximation.
Interacting Bose Fermi Systems In Nuclei
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Author : F. Iachello
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-11-11
Interacting Bose Fermi Systems In Nuclei written by F. Iachello and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-11-11 with Science categories.
Collective Effects In Quantum Statistics Of Radiation And Matter
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Author : V.N. Popov
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Collective Effects In Quantum Statistics Of Radiation And Matter written by V.N. Popov and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
Material particles, electrons, atoms, molecules, interact with one another by means of electromagnetic forces. That is, these forces are the cause of their being combined into condensed (liquid or solid) states. In these condensed states, the motion of the particles relative to one another proceeds in orderly fashion; their individual properties as well as the electric and magnetic dipole moments and the radiation and absorption spectra, ordinarily vary little by comparison with their properties in the free state. Exceptiotls are the special so-called collective states of condensed media that are formed under phase transitions of the second kind. The collective states of matter are characterized to a high degree by the micro-ordering that arises as a result of the interaction between the particles and which is broken down by chaotic thermal motion under heating. Examples of such pheonomena are the superfluidity of liquid helium, and the superconductivity and ferromagnetism of metals, which exist only at temperatures below the critical temperature. At low temperature states the particles do not exhibit their individual characteristics and conduct themselves as a single whole in many respects. They flow along capillaries in ordered fashion and create an undamped current in a conductor or a macroscopic magnetic moment. In this regard the material acquires special properties that are not usually inherent to it.
Proceedings Of The International School Of Physics Enrico Fermi
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Author : Società italiana di fisica
language : en
Publisher: IOS Press
Release Date : 2007
Proceedings Of The International School Of Physics Enrico Fermi written by Società italiana di fisica and has been published by IOS Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Science categories.
The field of cold atomic gases faced a revolution in 1995 when Bose-Einstein condensation was achieved. The quest for ultra-cold Fermi gases started shortly after the 1995 discovery, and quantum degeneracy in a gas of fermionic atoms was obtained in 1999. This work covers experimental techniques for the creation and study of Fermi quantum gases.
Nuclear Science Abstracts
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Author :
language : en
Publisher:
Release Date : 1976
Nuclear Science Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1976 with Nuclear energy categories.
Atomic And Molecular Cluster Research
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Author : Y. L. Ping
language : en
Publisher: Nova Publishers
Release Date : 2006
Atomic And Molecular Cluster Research written by Y. L. Ping and has been published by Nova Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Science categories.
The physics of atomic and molecular clusters is interesting from many points of view. These systems bridge the domains of atomic and molecular physics on one side and condensed matter physics on the other. Their properties may be dominated by their large surface-to-volume ratio, giving a unique opportunity to study the interplay between surface and volume effects. They may exhibit a discrete spectroscopy because of their finite size. A major thrust in the development of high-tech materials can be described as atomic-scale engineering. In this process, materials are assembled on an almost atom by atom basis in order to obtain useful properties not found in naturally-occurring substances.
