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Società Italiana di Fisica , IOS Press , Distributed in Japan by Ohmsha eBooks

Bose-Einstein Condensation in atomic gases : Varenna on Lake Como, Villa Monastero, 7-17 July 1998 = La condensazione di Bose-Einstein nei gas atomici : Varenna sur lago di Como, Villa Monastero, 7-17 Luglio 1998

M. Inguscio, S. Stringari, Carl Wieman

Published Jan 1, 1999• 0 citations
OpenAlex

Abstract

This work brings together leaders in both theory and experiments on Bose-Einstein condensation in gases. Their lectures provide detailed coverage of the experimental techniques for the creation and study of BEC, as well as the theoretical foundation for understanding the properties of this system.

Related papers

Bose-Einstein Condensation in atomic gases : Varenna on Lake Como, Villa Monastero, 7-17 July 1998

M. Inguscio, S. Stringari, Carl Wieman

This work brings together leaders in both theory and experiments on Bose-Einstein condensation in gases. Their lectures provide detailed coverage of the experimental techniques for the creation and study of BEC, as well as the theoretical foundation for understanding the properties of this system.

Società Italiana di Fisica , IOS Press , Distributed in Japan by Ohmsha eBooks•Jan 1, 1999•8 citations

Ultra-cold Fermi gases : Varenna on Lake Como, Villa Monastero, 20-30 June 2006

M. Inguscio, Wolfgang Ketterle, Ch Salomon

The field of cold atomic gases faced a revolution in 1995 when Bose-Einstein condensation was achieved. Since then, there has been an impressive progress, both experimental and theoretical. 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. The Pauli exclusion principle plays a crucial role in many aspects of ultra-cold Fermi gases, including inhibited interactions with applications to precision measurements, and strong correlations. The path towards strong interactions and pairing of fermions opened up with the discovery in 2003 that molecules formed by fermions near a Feshbach resonance were surprisingly stable against inelastic decay, but featured strong elastic interactions.This remarkable combination was explained by the Pauli exclusion principle and the fact that only inelastic collisions require three fermions to come close to each other. The unexpected stability of strongly interacting fermions and fermion pairs triggered most of the research which was presented at this summer school. It is remarkable foresight (or good luck) that the first steps to organize this summer school were already taken before this discovery. It speaks for the dynamics of the field how dramatically it can change course when new insight is obtained. The contributions in this volume provide a detailed coverage of the experimental techniques for the creation and study of Fermi quantum gases, as well as the theoretical foundation for understanding the properties of these novel systems.

IOS Press , Società Italiana di Fisica eBooks•Jan 1, 2007•7 citations

Atom optics and space physics : Varenna on Lake Como, Villa Monastero, 3-13 July 2007

E. Arimondo, W. Ertmer, Wolfgang P. Schleich +1 more

The goal of this volume is to discuss the rapidly moving field of atom optics and interferometry with all its intricate aspects ranging from fundamental physics to applications and the theory of relativity. The breathtaking success in manipulating atoms using lasers has encouraged these two so far disjunct communities to move closer together and begin collaborations. After an introduction to atom optics and Bose-Einstein condensation, the theoretical foundations of cold atom interferometers, their use to test gravity, and their implementation in laboratory measurements of the earth rotation and of Newton's gravitational constant are discussed. Several papers discuss the characteristics of gyroscopes and interferometers as sensors for inertial forces, starting from gyroscopes based on light waves and comparing their sensitivity to those based on matter waves. The final topic is the variation of fundamental constants, a subject that during the last years has attracted a lot of attention from different communities of physics.

IOS Press , Società Italiana di Fisica eBooks•Jan 1, 2009•1 citation

Note per una storia della condensazione di Bose-Einstein e dellesue applicazioni

Marco Arrighi

La condensazione di Bose-Einstein e un e etto sico che si veri ca in gas di particelle bosoniche, con momento di spin intero, quando viene portato a temperature dell'ordine del K. In tale condizione un gruppo di particelle ha energia cinetica nulla e percio si presenta all'osservatore come fase condensata dello stesso gas. La scoperta teorica di questo fenomeno fu il risultato del lavoro di A. Einstein e S.N. Bose, nel biennio 1924-25, ma non era possibile veri care praticamente la correttezza delle loro previsioni a causa dell'inesistenza di opportuni apparati sperimentali. Verso l'ultimo ventennio del secolo scorso, dopo essere stata accantonata per diversi anni, la BEC venne ripresa in considerazione. Grazie alla recente tecnologia dei laser e stata allora possibile nel 1995 l'osservazione in laboratorio di una frazione di gas bosonico condensato. La tesi costituisce un percorso cronologico dei passaggi chiave che hanno portato questo e etto tipico della meccanica statistica a diventare da una semplice ipotesi teorica un evento reale riproducibile in laboratorio.

•Mar 20, 2020•0 citations

Theory of Quantum Gases and Quantum Coherence: The Levico BEC Workshop, 12–14 June 2003

S. Giorgini, Fabrizio Illuminati, Chiara Menotti +1 more

This special section of Journal of Physics B: Atomic, Molecular and Optical Physics (J. Phys. B) is a compilation of articles originating from the three-day international workshop entitled 'Theory of Quantum Gases and Quantum Coherence', held in June 2003 in Levico, Italy. The workshop follows on from the Salerno workshop held in 2002 (see J. Phys. B volume 34, issue 23). The articles presented in this special section highlight the interdisciplary nature of Bose–Einstein condensation, both experimental and theoretical, and some of the exciting progress being made in the field at the moment. We would like to thank all of the institutions and people who have supported the workshop. The European Science Foundation has provided substantial financial support through the programme 'Quantum Degenerate Dilute Systems: Bose–Einstein Condensation and Beyond (BEC2000+)'. Our gratitude goes especially to the steering committee of the BEC2000+ programme and to its chairman, Professor Dr Martin Wilkens. The Research and Development Centre for Bose–Einstein Condensation of the Istituto Nazionale di Fisica della Materia (BEC-INFM) has been another important source of financial support and for this we thank especially the Director of the centre, Professor Sandro Stringari. We would also like to thank the Dipartimento di Fisica of the Universita di Trento for financial and logistic help. As this international workshop coincided with the ten-year anniversary of the first ever BEC conference, which was also held in Levico, we asked Professor Allan Griffin to write an introduction to this special section based on the talk he gave at the workshop. This introduction (the following article) gives a nice overview of the first ever conference and celebrates the progress in the field of BEC over the past ten years.

Journal of Physics B Atomic Molecular and Optical Physics•Mar 24, 2004•0 citations

Condensazione di Bose-Einstein sulla superficie di una sfera

Martina Russo

Recentemente la condensazione di Bose-Einstein e stata ottenuta con atomi diluiti ed ultrafreddi in condizioni di microgravita su un razzo [Nature, 562, 391 (2018)]. Si pensa ora di studiare il condensato di Bose-Einstein in trappole a bolla che, in assenza di gravita, confinano gli atomi in maniera uniforme su un sottile guscio sferico. Lo studente, dopo una fase iniziale di studio della letteratura, utilizzando il formalismo della meccanica statistica quantistica, calcolera la temperatura critica di condensazione di Bose-Einstein e la frazione condensata di un gas di bosoni non interagenti che si muovono sulla superficie di una sfera. Solo nel limite del raggio della sfera che tende an infinito, corrispondente ad un sistema bidimensionale piatto, ci si aspetta di ottenere una temperatura critica di condensazione uguale a zero, in accordo con il teorema di Mermin-Wagner.

•Jul 1, 2019•0 citations
The field of cold atomic gases faced a revolution in 1995 when Bose-Einstein condensation was achieved. Since then, there has been an impressive progress, both experimental and theoretical. 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. The Pauli exclusion principle plays a crucial role in many aspects of ultra-cold Fermi gases, including inhibited interactions with applications to precision measurements, and strong correlations. The path towards strong interactions and pairing of fermions opened up with the discovery in 2003 that molecules formed by fermions near a Feshbach resonance were surprisingly stable against inelastic decay, but featured strong elastic interactions.This remarkable combination was explained by the Pauli exclusion principle and the fact that only inelastic collisions require three fermions to come close to each other. The unexpected stability of strongly interacting fermions and fermion pairs triggered most of the research which was presented at this summer school. It is remarkable foresight (or good luck) that the first steps to organize this summer school were already taken before this discovery. It speaks for the dynamics of the field how dramatically it can change course when new insight is obtained. The contributions in this volume provide a detailed coverage of the experimental techniques for the creation and study of Fermi quantum gases, as well as the theoretical foundation for understanding the properties of these novel systems.
The goal of this volume is to discuss the rapidly moving field of atom optics and interferometry with all its intricate aspects ranging from fundamental physics to applications and the theory of relativity. The breathtaking success in manipulating atoms using lasers has encouraged these two so far disjunct communities to move closer together and begin collaborations. After an introduction to atom optics and Bose-Einstein condensation, the theoretical foundations of cold atom interferometers, their use to test gravity, and their implementation in laboratory measurements of the earth rotation and of Newton's gravitational constant are discussed. Several papers discuss the characteristics of gyroscopes and interferometers as sensors for inertial forces, starting from gyroscopes based on light waves and comparing their sensitivity to those based on matter waves. The final topic is the variation of fundamental constants, a subject that during the last years has attracted a lot of attention from different communities of physics.
La condensazione di Bose-Einstein e un e etto sico che si veri ca in gas di particelle bosoniche, con momento di spin intero, quando viene portato a temperature dell'ordine del K. In tale condizione un gruppo di particelle ha energia cinetica nulla e percio si presenta all'osservatore come fase condensata dello stesso gas. La scoperta teorica di questo fenomeno fu il risultato del lavoro di A. Einstein e S.N. Bose, nel biennio 1924-25, ma non era possibile veri care praticamente la correttezza delle loro previsioni a causa dell'inesistenza di opportuni apparati sperimentali. Verso l'ultimo ventennio del secolo scorso, dopo essere stata accantonata per diversi anni, la BEC venne ripresa in considerazione. Grazie alla recente tecnologia dei laser e stata allora possibile nel 1995 l'osservazione in laboratorio di una frazione di gas bosonico condensato. La tesi costituisce un percorso cronologico dei passaggi chiave che hanno portato questo e etto tipico della meccanica statistica a diventare da una semplice ipotesi teorica un evento reale riproducibile in laboratorio.
This special section of Journal of Physics B: Atomic, Molecular and Optical Physics (J. Phys. B) is a compilation of articles originating from the three-day international workshop entitled 'Theory of Quantum Gases and Quantum Coherence', held in June 2003 in Levico, Italy. The workshop follows on from the Salerno workshop held in 2002 (see J. Phys. B volume 34, issue 23). The articles presented in this special section highlight the interdisciplary nature of Bose–Einstein condensation, both experimental and theoretical, and some of the exciting progress being made in the field at the moment. We would like to thank all of the institutions and people who have supported the workshop. The European Science Foundation has provided substantial financial support through the programme 'Quantum Degenerate Dilute Systems: Bose–Einstein Condensation and Beyond (BEC2000+)'. Our gratitude goes especially to the steering committee of the BEC2000+ programme and to its chairman, Professor Dr Martin Wilkens. The Research and Development Centre for Bose–Einstein Condensation of the Istituto Nazionale di Fisica della Materia (BEC-INFM) has been another important source of financial support and for this we thank especially the Director of the centre, Professor Sandro Stringari. We would also like to thank the Dipartimento di Fisica of the Universita di Trento for financial and logistic help. As this international workshop coincided with the ten-year anniversary of the first ever BEC conference, which was also held in Levico, we asked Professor Allan Griffin to write an introduction to this special section based on the talk he gave at the workshop. This introduction (the following article) gives a nice overview of the first ever conference and celebrates the progress in the field of BEC over the past ten years.
Recentemente la condensazione di Bose-Einstein e stata ottenuta con atomi diluiti ed ultrafreddi in condizioni di microgravita su un razzo [Nature, 562, 391 (2018)]. Si pensa ora di studiare il condensato di Bose-Einstein in trappole a bolla che, in assenza di gravita, confinano gli atomi in maniera uniforme su un sottile guscio sferico. Lo studente, dopo una fase iniziale di studio della letteratura, utilizzando il formalismo della meccanica statistica quantistica, calcolera la temperatura critica di condensazione di Bose-Einstein e la frazione condensata di un gas di bosoni non interagenti che si muovono sulla superficie di una sfera. Solo nel limite del raggio della sfera che tende an infinito, corrispondente ad un sistema bidimensionale piatto, ci si aspetta di ottenere una temperatura critica di condensazione uguale a zero, in accordo con il teorema di Mermin-Wagner.