Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Quantum theory of many Bose atom systems

Imran Khan

Published Jan 1, 2007• 0 citations
OpenAlex

Abstract

This dissertation describes some of the efforts involved in developing a systematic understanding of Quantum many-atom systems with real atomic interactions.Specifically, we develop and a apply a non-perturbative Quantum theory of many-Dedicated to my dear wife, Aasma, and my new family; uncle Khalid, auntie Rashda, brother Rehan and sister Henna, whose love and encouragement in my final year has been invaluable.

Related papers

3-Dimensional photonic circuits for quantum information processing

Michael Laurence Buzbee

For many years silica fibers have been used for long-distance transfer of quantum information, and in particular within the domain of quantum communications and quantum key distribution.This is in part due to the ability to transmit tens of kilometers with negligible decoherence and loss.Although optical fibers fabricated with transparent materials such as SiO2 allow for the necessary low-loss transmission, they lack the photon-photon nonlinearity that are necessary for implementation of the other aspect of quantum information, that of quantum computation.The necessary nonlinearity, that is weak in SiO2, is stronger in material such as silicon nitride.In fact, silicon nitride has proven to be a promising platform for the generation and manipulation of single photons.The strong optical nonlinearity allows for parametric four-wave mixing which can be utilized to generate twin photons, while the transparency of silicon nitride in the near IR allows for low loss wave guides to be fabricated.However, due to silicon nitride's This work is dedicated to my wife, son, and entire family.A special feeling of gratitude to my loving wife Caitlin who was always supportive during late nights and frustrations; to Axl who always puts a smile on my face; and to my parents, brothers, sisters, and in-laws who supported and encouraged me throughout the entire program.viii

•Jan 1, 2016•0 citations

Quantum Many-Particle Systems

John W. Negele, Henri Orland

This book explains the fundamental concepts and theoretical techniques used to understand the properties of quantum systems having large numbers of degrees of freedom. A number of complimentary approaches are developed, including perturbation theory; nonperturbative approximations based on functional integrals; general arguments based on order parameters, symmetry, and Fermi liquid theory; and stochastic methods.

CRC Press eBooks•Mar 5, 2018•1,402 citations

QUANTUM THEORY OF MANY-PARTICLE SYSTEMS.

Per‐Olov Löwdin

A summary of research is given for basic quantum mechanics and perturbation theory, symmetry properties, density matrices, field-theoretical methods, and applications to molecules and solids. Research reports and published papers are listed.

•Oct 31, 1965•56 citations

QUANTUM FEATURES OF HARMONIC OSCILLATORS: INVESTIGATING THE LIMITS OF QUANTUM MECHANICS

LUCA ABRAHAO PAIVA

Nothing is achieved alone.I am what and where I am because of all of those who crossed my path.Without all the good and the bad, I would not be here.I want to deeply thank all of those who joined me in this amazing experience.More specifically... To my mother who have always supported me in every decision I made, who let me walk on my own, but made me sure she was always there for what I needed.To my father, that always taught me the value of education and dedication.To my brother, to all the coffee and many gestures of love and appreciation.I hope I can inspire you, the same way you inspire me.À minha avó, que não somente me ensinou a ler, mas também com quem aprendi muito sobre amor, família e perseverança.To my friends who have been with me throughout all these years, sharing dreams, wins, loses but always there for each other.Specifically, those who started with me this journey in Physics, Rafael e Vitória, and are a fundamental part of my trajectory.Also, all my colleagues from the Quantum Adventures group, that quickly became a second family.To my friend and advisor, Thiago.It was out of pure chance I ended up in that interview and sent you an email.Now, two years later, I can see the difference it has made and how much you helped me through all of it, not only academically.It was a pleasure share these last two years.And hopefully, many to come. At last, I want to thank my beloved girlfriend Clara.There is no overstating the importance you have in my life.A great part of what I am, is due to you.And that part is certainly the best of me.Love you dearly.

•Oct 4, 2024•0 citations

Thermodynamics of a Bose gas: Sound velocity from global variables and equivalence with other approaches

A. R. Fritsch

Without question, this is one of the hardest part of the thesis, and where we can commit a mistake forgetting people that helped in this thesis.Therefore, if this occurs, my sincere apologies.I would like to thank my family for their love.For believe me and wish me all the best, for the education and the support.Live far from the family is not easy, but the talks and a few visits help us, and also motivate me to return.A lovely person who helps me in everything, also makes it more easy, and is always on my side.This is my wife.Thank you Joyciane, for help me in everything, for your love, dedication, your patience, mainly in this days of writing the thesis and with the classes, our time together becomes short, but you supported me always.Also for her family, my second family, for their love, confidence, and to consider me as a son.My supervisor Emanuel, for the time dedicated to this thesis.For the patience in reading and correcting this thesis many times, and for teaching me during this period

•Mar 28, 2017•4 citations

Quantum theory of many-particle systems

Alexander L. Fetter, John Dirk Walecka

"Singlemindedly devoted to its job of educating potential many-particle theorists…deserves to become the standard text in the field." - Physics Today"The most comprehensive textbook yet published in its field and every postgraduate student or teacher in this field should own or have access to a copy." - EndeavorA self-contained, unified treatment of nonrelativistic many-particle systems, this text offers a solid introduction to procedures in a manner that enables students to adopt techniques for their own use. Its discussions of formalism and applications move easily between general theo

•Jan 1, 1971•5,046 citations
This dissertation describes some of the efforts involved in developing a systematic understanding of Quantum many-atom systems with real atomic interactions.Specifically, we develop and a apply a non-perturbative Quantum theory of many-Dedicated to my dear wife, Aasma, and my new family; uncle Khalid, auntie Rashda, brother Rehan and sister Henna, whose love and encouragement in my final year has been invaluable.
For many years silica fibers have been used for long-distance transfer of quantum information, and in particular within the domain of quantum communications and quantum key distribution.This is in part due to the ability to transmit tens of kilometers with negligible decoherence and loss.Although optical fibers fabricated with transparent materials such as SiO2 allow for the necessary low-loss transmission, they lack the photon-photon nonlinearity that are necessary for implementation of the other aspect of quantum information, that of quantum computation.The necessary nonlinearity, that is weak in SiO2, is stronger in material such as silicon nitride.In fact, silicon nitride has proven to be a promising platform for the generation and manipulation of single photons.The strong optical nonlinearity allows for parametric four-wave mixing which can be utilized to generate twin photons, while the transparency of silicon nitride in the near IR allows for low loss wave guides to be fabricated.However, due to silicon nitride's This work is dedicated to my wife, son, and entire family.A special feeling of gratitude to my loving wife Caitlin who was always supportive during late nights and frustrations; to Axl who always puts a smile on my face; and to my parents, brothers, sisters, and in-laws who supported and encouraged me throughout the entire program.viii
Nothing is achieved alone.I am what and where I am because of all of those who crossed my path.Without all the good and the bad, I would not be here.I want to deeply thank all of those who joined me in this amazing experience.More specifically... To my mother who have always supported me in every decision I made, who let me walk on my own, but made me sure she was always there for what I needed.To my father, that always taught me the value of education and dedication.To my brother, to all the coffee and many gestures of love and appreciation.I hope I can inspire you, the same way you inspire me.À minha avó, que não somente me ensinou a ler, mas também com quem aprendi muito sobre amor, família e perseverança.To my friends who have been with me throughout all these years, sharing dreams, wins, loses but always there for each other.Specifically, those who started with me this journey in Physics, Rafael e Vitória, and are a fundamental part of my trajectory.Also, all my colleagues from the Quantum Adventures group, that quickly became a second family.To my friend and advisor, Thiago.It was out of pure chance I ended up in that interview and sent you an email.Now, two years later, I can see the difference it has made and how much you helped me through all of it, not only academically.It was a pleasure share these last two years.And hopefully, many to come. At last, I want to thank my beloved girlfriend Clara.There is no overstating the importance you have in my life.A great part of what I am, is due to you.And that part is certainly the best of me.Love you dearly.
Without question, this is one of the hardest part of the thesis, and where we can commit a mistake forgetting people that helped in this thesis.Therefore, if this occurs, my sincere apologies.I would like to thank my family for their love.For believe me and wish me all the best, for the education and the support.Live far from the family is not easy, but the talks and a few visits help us, and also motivate me to return.A lovely person who helps me in everything, also makes it more easy, and is always on my side.This is my wife.Thank you Joyciane, for help me in everything, for your love, dedication, your patience, mainly in this days of writing the thesis and with the classes, our time together becomes short, but you supported me always.Also for her family, my second family, for their love, confidence, and to consider me as a son.My supervisor Emanuel, for the time dedicated to this thesis.For the patience in reading and correcting this thesis many times, and for teaching me during this period
"Singlemindedly devoted to its job of educating potential many-particle theorists…deserves to become the standard text in the field." - Physics Today"The most comprehensive textbook yet published in its field and every postgraduate student or teacher in this field should own or have access to a copy." - EndeavorA self-contained, unified treatment of nonrelativistic many-particle systems, this text offers a solid introduction to procedures in a manner that enables students to adopt techniques for their own use. Its discussions of formalism and applications move easily between general theo