Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 445 for “"Many-body"”.
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Topics in many-body physics
"This thesis is divided into two parts. The first describes a study of the dilute Fermi gas with short range repulsive interactions in 2D, with special emphasis on questions related to the validity of Fermi liquid theory. We find that despite the existence of non-perturbative effects due to …
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Quasiparticles in Quantum Many-Body Systems
Topologically ordered phases flamboyance a cornucopia of intriguing phenomena that cannot be perceived in the conventional phases including the most striking property of hosting anyon quasiparticles having fractional charges and fractional statistics. Such phases were discovered with the remarkable …
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Case Studies in Many-Body Physics
<p>The many-body problem refers to any physical problem made of more than two interacting particles. With increasing number of particles in a system, their coupling and entanglement becomes more complex, and there is no general analytic solution even for a three-body classical or quantum systems. …
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Normal and superconducting many-body systems
"This thesis consists of three Chapters. In the first Chapter, based on a planar unconventional Fermi liquid model, we present several results on the optimally doped and overdoped cuprate superconductors. For the normal state, we have analytically derived a linear in temperature and energy …
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Bosonization and the many-body problem
… thesis the method of bosonization of fermionic many-body systems in any number of dimensions is developed. After an introduction to the problem in chapter 1 and to the method of bosonization in chapter 2 (with its application to the non-interacting problem) the Fermi liquid behavior of …
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Numerical studies on many-body localization
… in our understanding of physical processes. Many-body localization (MBL) is a phase of matter in which thermalization does not apply and ergodicity is broken. This striking behavior, which can appears on closed, interacting, quantum systems subject to strong disorder, has been the focus of a …
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Many-body localization and tensor networks
This thesis is focused on many-body localization (MBL) and the development of algorithms using the tensor networks representation for many-body localized systems. Chapter 1 is a detailed discussion on the MBL phenomenon. Chapter 2 gives an introduction to the numerical techniques that are …
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Quantum simulation of many-body dynamics
… providing a window into the dynamics of quantum many-body systems that appear in these fields. In addition to growing our knowledge of fundamental science, an increased understanding of these systems could lead to technological innovations in energy, industrial processes, and medicine. There are …
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The structure of many-body entanglement
… structure of quantum entanglement in local many-body systems. A central theme is the organizing power of the renormalization group for thinking about many-body entanglement. We argue that the coarse structure of entanglement across of wide variety of systems, from gapped topological phases …
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Multipole Symmetries and Many Body Physics
This thesis studies the many body physics of systems with multipolar conservation laws --- systems which conserve both a total charge and various multipole moments thereof. These conservation laws place constraints on the way in which particles can move, and carry important ramifications for both …
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Digital Quantum Computing for Many-Body Simulations
… scattering provide an intriguing many-body system for time evolution simulations on a quantum computer. These phenomena are of particular interest in extreme astrophysical settings such as core-collapse supernovae, neutron star mergers and the early universe. A detailed description …
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Many Body Topics in Condensed Matter Physics
Made available in DSpace on 2011-01-14T22:40:31Z (GMT). No. of bitstreams: 3 Anduaga_Inaki.pdf: 628970 bytes, checksum: c30c70bc75738c6ce4b0eb4b5f15ccf7 (MD5) license.txt: 4063 bytes, checksum: 9871e0df74b0ca10170a25e209c70f40 (MD5) Anduaga_Inaki.tex: 251490 bytes, checksum: …
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Inverse methods in quantum many-body physics
"The interactions of many quantum particles can give rise to fascinating emergent behavior and exotic phases of matter with no classical analogues. Examples include phases with topological properties, which can occur at low temperatures in frustrated magnets and certain superconductors, and …
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Advancements in Monte Carlo many body methods
Many-body methods are one of the most powerful tools that may be brought to bear to solve the electronic structure problem. While both of the following theories provide a complete path to obtain any quantity, many-body perturbation theory is principally used to provide molecular energies, while …
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Applying AdS/CFT to many body systems
In this thesis, we model a many body system by a conformal field theory, and calculate the correlation function of a scalar operator in this theory using the AdS/CFT correspondence. We describe numerical techniques for calculating the retarded Green function of the operator. The results suggest …
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Many-body contributions to spin relaxation in semiconductors
… expressions that include contributions from many-body interactions. The results shed light on the validity of commonly made approximations in calculating spin relaxation for various systems. More importantly, we show how spin relaxation can affect other physical observables, such as spin …
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