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.
Results
Showing 1 to 20 of 249 for “"Symmetry-Breaking"”.
-
Equivariant symmetry breaking sets
… equivariant networks are unable to produce lower symmetry outputs given a high symmetry input. Spontaneous symmetry breaking occurs in many physical systems where we have a less symmetric stable state from an initial highly symmetric one. Hence, it is imperative that we understand how to …
-
Groups, Graphs, and Symmetry-Breaking
A labeling of a graph G is said to be r-distinguishing if no automorphism of G preserves all of the vertex labels. The smallest such number r for which there is an r-distinguishing labeling on G is called the distinguishing number of G. The distinguishing set of a group Gamma, D(Gamma), is the set …
-
Chiral symmetry breaking transitions in holographic duals
… AdS/CFT Correspondence are used to study chiral symmetry breaking in dual gauge theories. We use the D3/D7 and D3/D5 systems to model both 3+1 and 2+1 dimensional, strongly coupled, gauge theories with quark fields. We show that chiral symmetry breaking is induced by either an imposed running …
-
Symmetry-breaking motility and RNA secondary structures
… by in vitro experiments investigating the symmetry-breaking motility of functionalized spherical beads to develop a general theory for the dynamics of a rigid object propelled by an active process at its surface. Starting from a phenomenological expansion for the microscopic dynamics, we …
-
Complex Plasmonic Nanostructures: Symmetry Breaking and Coupled Systems
Metallic nanostructures support resonant oscillations of their conduction band electrons called localized surface plasmon resonances. Plasmons couple efficiently to light and have enabled a new class of technology for the manipulation of light at the nanoscale. Nanostructures that support plasmon …
-
Flavour SU(3) symmetry breaking in quantum chromodynamics
… the determination of the size of SU(3) flavour symmetry breaking in the QeD vacuum, as measured by the ratio of the strange to non-strange quark vacuum condensates <ss>/<uu> (with <ūu>
-
Fast wait-free symmetry breaking in distributed systems
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1993.
-
Dynamical symmetry breaking in molecules and molecular aggregates
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1994.
-
Symmetry breaking in the Hubbard model : a bosonization approach
Almost all known high temperature superconductors are cuprates, which can be suitably modelled by the two dimensional Hubbard model. To understand the interplay of various long range properties as antiferromagnetism and superconductivity, one can calculate the phase diagram of the Hubbard model in …
-
Phase structure and symmetry breaking in SU(N) ferromagnets
Μελετάμε τη φασική δομή σιδηρομαγνητών των οποίων οι δομικοί λίθοι φέρουν μια μη αναγώγιμη αναπαράσταση της ομάδας SU(N), και αλληλεπιδρούν ανά δύο μεταξύ τους μέσω αλληλεπιδράσεων μακράς εμβέλειας αναλλοίωτων κάτω από SU(N) μετασχηματισμούς. Αναπτύσσουμε τον φορμαλισμό για τη μελέτη της …
-
Aspects of Chiral Symmetry Breaking in Gauge Field Theories
… we study the mechanisms of spontaneous chiral symmetry breaking in gauge field theories. We focus on the general relationship between dynamical mass generation and the formation of bound states in theories not having elementary scalars. In that context we demonstrate that the fermion-pair …
-
Aspects of chiral symmetry breaking in gauge field theories
… we study the mechanisms of spontaneous chiral symmetry breaking in gauge field theories. We focus on the general relationship between dynamical mass generation and the formation of bound states in theories not having elementary scalars. In that context we demonstrate that the fermion-pair …
-
Spontaneous symmetry breaking transport : from anomalous response to chiral separation
… states of sustained transport spontaneously breaking the symmetry in the deterministic limit, named spontaneous symmetry breaking transport. If the symmetry of the dynamics is broken by a small perturbation, e.g. a constant bias force, the particle mobility may be in practically any …
-
Symmetry Breaking and the Inverse Energy Cascade in a Plasma
… non-symmetric bias and the influence of broken symmetry on strongly turbulent plasmas. Non-symmetric bias is applied through either point biasing or an equatorial array spanning the device. In both cases, the spatial symmetry of applied bias dramatically effects the plasma fluctuations. With …
-
Chiral symmetry breaking and external fields in the Kuperstein-Sonnenschein model
A novel holographic model of chiral symmetry breaking has been proposed by Kuperstein and Sonnenschein by embedding non-supersymmetric probe D7 and anti-D7 branes in the Klebanov-Witten background. We study the dynamics of the probe flavours in this model in the presence of finite temperature and a …
-
Some Aspects of Symmetry Breaking in Unified Weak-Electromagnetic Gauge Theories
<p>In this thesis, we focus on some problems of symmetry breaking in unified weak-electromagnetic gauge theories. In Chapter I we set the scene with a brief history of weak interaction theory up until the impasse which led to the development of the unified weak-electromagnetic gauge theory …
-
Topology, localization, and spontaneous symmetry breaking in nonequilibrium many-body systems
… aspects: topology, localization, and spontaneous symmetry breaking.
-
Aspects of electroweak symmetry breaking in physics beyond the standard model
… that the minimal model for electroweak symmetry breaking, with a single Higgs boson, is not realised in nature and that new physics, in addition to (or instead of) the Higgs, will be discovered at the Large Hadron Collider (LHC). However constraints on new physics indicate that many …
Page 1 of 13