New Paths in Lattice Gauge Theories

New Paths in Lattice Gauge Theories
Author: Giovanni Pederiva
Publisher:
Total Pages: 0
Release: 2022
Genre: Electronic dissertations
ISBN:

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The theory of Quantum Chromodynamics (QCD) is a crucial element in our current understanding of the laws that govern the universe. It describes the Strong Interaction, the force that governs the behavior of quarks and gluons and confines them at low energies into hadrons, such as protons, neutrons and pions.Lattice QCD (LQCD) is a numerical approach that allows non-perturbative studies of the strong interaction at hadronic energy scales, where other theoretical methods fail. It works by discretizing space-time on a lattice of points, fixing the fermion field to the lattice sites and representing the gluon field as the links between them.Our current numerical approach to Lattice QCD is based upon Markov Chain Monte Carlo (MCMC) methods, from which statistical ensembles of lattice gauge field configurations are generated using a discrete version of the QCD action when evaluating the path-integrals. These calculations require the world's largest supercomputing facilities and possible improvements or new ideas are actively being researched. In this dissertation we present three such attempts.First, we propose a new strategy to employ the recent advances in Machine Learning into LQCD. In particular, we present a method to use Neural Networks to accelerate the calculations of hadron two-point correlation functions and discuss its applicability.The second effort we present is part of new collaborative undertaking by the OPEN LATtice Initiative (OPENLAT) to generate new state-of-the-art LQCD ensembles using the recently proposed Stabilized Wilson Fermions (SWF) package, which also includes a modified lattice action. The first results for the light hadron spectrum, obtained by Bayesian model averaging, are presented indicating the excellent scaling behavior of SWF towards the continuum.Finally, the tentative new approach of Quantum Computing for Lattice Field Theories is introduced as a possible radical solution to the sign problem. We compare three algorithms for quantum state preparation in the case of the Schwinger model, a toy model for QCD, and discuss their applicability to Noisy Intermediate-Scale Quantum (NISQ) systems.

Lattice Gauge Theories: An Introduction

Lattice Gauge Theories: An Introduction
Author: Heinz J Rothe
Publisher: World Scientific
Total Pages: 397
Release: 1992-01-29
Genre:
ISBN: 9814602302

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This book introduces a large number of topics in lattice gauge theories, including analytical as well as numerical methods. It provides young physicists with the theoretical background and basic computational tools in order to be able to follow the extensive literature on the subject, and to carry out research on their own. Whenever possible, the basic ideas and technical inputs are demonstrated in simple examples, so as to avoid diverting the readers' attention from the main line of thought. Sufficient technical details are however given so that he can fill in the remaining details with the help of the cited literature without too much effort.This volume is designed for graduate students in theoretical elementary particle physics or statistical mechanics with a basic knowledge in Quantum Field Theory.

Lattice Gauge Theories: An Introduction (Third Edition)

Lattice Gauge Theories: An Introduction (Third Edition)
Author: Heinz J Rothe
Publisher: World Scientific Publishing Company
Total Pages: 608
Release: 2005-06-17
Genre: Science
ISBN: 9813102098

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This book provides a broad introduction to gauge field theories formulated on a space-time lattice, and in particular of QCD. It serves as a textbook for advanced graduate students, and also provides the reader with the necessary analytical and numerical techniques to carry out research on his own. Although the analytic calculations are sometimes quite demanding and go beyond an introduction, they are discussed in sufficient detail, so that the reader can fill in the missing steps. The book also introduces the reader to interesting problems which are currently under intensive investigation. Whenever possible, the main ideas are exemplified in simple models, before extending them to realistic theories. Special emphasis is placed on numerical results obtained from pioneering work. These are displayed in numerous figures.

Lattice Gauge Theories

Lattice Gauge Theories
Author: Heinz J. Rothe
Publisher: World Scientific
Total Pages: 610
Release: 2005
Genre: Science
ISBN: 9812560629

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- Wherever possible simple examples, which illustrate the main ideas, are provided before embarking on the actual discussion of the problem of interest - The book introduces the readers to problems of great current interest, like instantons, calorons, vortices, magnetic monopoles - QCD at finite temperature is discussed at great length, both in perturbation theory and in Monte Carlo simulations - The book contains many figures showing numerical results of pioneering work

Lattice Gauge Theories: An Introduction (Second Edition)

Lattice Gauge Theories: An Introduction (Second Edition)
Author: Heinz J Rothe
Publisher: World Scientific Publishing Company
Total Pages: 530
Release: 1997-06-09
Genre:
ISBN: 9813105046

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This book introduces the reader to an area of elementary particle physics which has been the subject of intensive research in the past two decades. It provides graduate students with the basic theoretical background on quantum gauge field theories formulated on a space-time lattice, and with the computational tools for carrying out research in this field. The book is a substantially extended version of the first edition which appeared in 1992. Much effort has been invested to present the material in a transparent way, and in exemplifying subtle points in simple models. The material covered should enable the reader to follow the vast literature on the subject without too much difficulties. Hopefully the book will motivate young physicists to carry out research in this area of elementary particle physics.

Methods of Contemporary Gauge Theory

Methods of Contemporary Gauge Theory
Author: Yuri Makeenko
Publisher: Cambridge University Press
Total Pages: 433
Release: 2002-08-15
Genre: Science
ISBN: 1139441655

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This 2002 book provides a thorough introduction to quantum theory of gauge fields, with emphasis on non-perturbative methods. Suitable as a textbook for advanced graduate courses in quantum field theory, it will also be of interest to researchers in high energy theory and condensed matter physics.

Lattice Gauge Theories: An Introduction (Fourth Edition)

Lattice Gauge Theories: An Introduction (Fourth Edition)
Author: Heinz J Rothe
Publisher: World Scientific Publishing Company
Total Pages: 628
Release: 2012-03-14
Genre: Science
ISBN: 9813100621

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This book provides a broad introduction to gauge field theories formulated on a space-time lattice, and in particular of QCD. It serves as a textbook for advanced graduate students, and also provides the reader with the necessary analytical and numerical techniques to carry out research on his own. Although the analytic calculations are sometimes quite demanding and go beyond an introduction, they are discussed in sufficient detail, so that the reader can fill in the missing steps. The book also introduces the reader to interesting problems which are currently under intensive investigation. Whenever possible, the main ideas are exemplified in simple models, before extending them to realistic theories. Special emphasis is placed on numerical results obtained from pioneering work. These are displayed in a great number of figures. Beyond the necessary amendments and slight extensions of some sections in the third edition, the fourth edition includes an expanded section on Calorons — a subject which has been under intensive investigation during the last twelve years.

Lattice Quantum Field Theory Of The Dirac And Gauge Fields: Selected Topics

Lattice Quantum Field Theory Of The Dirac And Gauge Fields: Selected Topics
Author: Belal Ehsan Baaquie
Publisher: World Scientific
Total Pages: 317
Release: 2020-07-30
Genre: Science
ISBN: 9811209715

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Quantum Chromodynamics is the theory of strong interactions: a quantum field theory of colored gluons (Yang-Mills gauge fields) coupled to quarks (Dirac fermion fields). Lattice gauge theory is defined by discretizing spacetime into a four-dimensional lattice — and entails defining gauge fields and Dirac fermions on a lattice. The applications of lattice gauge theory are vast, from the study of high-energy theory and phenomenology to the numerical studies of quantum fields.Lattice Quantum Field Theory of the Dirac and Gauge Fields: Selected Topics examines the mathematical foundations of lattice gauge theory from first principles. It is indispensable for the study of Dirac and lattice gauge fields and lays the foundation for more advanced and specialized studies.

New Pathways in High-Energy Physics II

New Pathways in High-Energy Physics II
Author: Stephan Mintz
Publisher: Springer Science & Business Media
Total Pages: 418
Release: 2013-03-08
Genre: Science
ISBN: 1468429256

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This year, Orbis Scientiae 1976, dedicated to the Bicentennial of the United States of America, was devoted entirely to recent developments in high energy physics. These proceedings contain nearly all of the papers presented at Orbis, held at the Center for Theoretical Studies, University of Miami, during January 19-22, 1976. The organization of Orbis this year was due mainly to the moderators of the sessions, principally Sydney Meshkov, Murray Gell-Mann, Yoichiro Nambu, Glennys Farrar, Fred Zachariasen and Behram Kursunoglu, who was also chairman of the conference. The coherence of the various sessions is due to their efforts, and special thanks are due to Sydney Meshkov who was responsible for coor dinating many of the efforts of the moderators and for including essentially all of the frontier developments in high energy physics. Because of the number of papers and their integrated length, it has been necessary to divide these proceedings into two volumes. An effort has been made to divide the material in the two volumes into fundamental questions (including the appearance of magnetic charge in particle physics) and recent high energy results and attendant ppenomenology. These volumes were prepared by Mrs. Helga Billings, Mrs. Elva Brady and Ms. Yvonne Leber, and their dedication and skill are gratefully acknowledged. Their efforts v PREFACE during Orbis were supplemented by those of Mrs. Jacquelyn Zagursky, with our appreciation. The photo graphs were taken by Ms. Shirley Busch.